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Li L, Han Y, Li J, Lin Y, Zhang X, Wang Q, Cao J. Effects of photochemical aging on the molecular composition of organic aerosols derived from agricultural biomass burning in whole combustion process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174152. [PMID: 38906306 DOI: 10.1016/j.scitotenv.2024.174152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 06/04/2024] [Accepted: 06/18/2024] [Indexed: 06/23/2024]
Abstract
Biomass burning organic aerosols (BBOA) are key components of atmospheric particulate matter, yet the effects of aging process on their chemical composition and related properties remain poorly understood. In this study, fresh smoke emissions from the combustion of three types of agricultural biomass residues (rice, maize, and wheat straws) were photochemically aged in an oxidation flow reactor. The changes in BBOA composition were characterized by offline analysis using ultrahigh performance liquid chromatography coupled with Orbitrap mass spectrometry. The BBOA molecular composition varied dramatically with biomass type and aging process. Fresh and aged BBOA were predominated by CHO and nitrogen-containing CHON, CHN, and CHONS species, while with very few CHOS and other non‑oxygen species. The signal peak area variations revealed that individual molecular species underwent dynamic changes, with 77-81 % of fresh species decreased or even disappeared and 33-46 % of aged species being newly formed. A notable increase was observed in the number and peak area of CxHyO≥6 compounds in aged BBOA, suggesting that photochemical process served as an important source of highly oxygenated species. Heterocyclic CxHyN2 compounds mostly dominated in fresh CHN species, whereas CxHyN1 were more abundant in aged ones. Fragmentation and homologs oxidation by addition of oxygen-containing functional groups were important pathways for the BBOA aging. The changes in BBOA composition with aging would have large impacts on particle optical properties and toxicity. This study highlights the significance of photochemical aging process in altering chemical composition and related properties of BBOA.
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Affiliation(s)
- Lijuan Li
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yuemei Han
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
| | - Jianjun Li
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Yue Lin
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Zhang
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Qiyuan Wang
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
| | - Junji Cao
- Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
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2
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Lv Q, Yang Z, Chen Z, Li M, Gao B, Yang J, Chen X, Xu B. Crop residue burning in China (2019-2021): Spatiotemporal patterns, environmental impact, and emission dynamics. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 21:100394. [PMID: 38357480 PMCID: PMC10864837 DOI: 10.1016/j.ese.2024.100394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 02/16/2024]
Abstract
Crop residue burning (CRB) is a major contributor to air pollution in China. Current fire detection methods, however, are limited by either temporal resolution or accuracy, hindering the analysis of CRB's diurnal characteristics. Here we explore the diurnal spatiotemporal patterns and environmental impacts of CRB in China from 2019 to 2021 using the recently released NSMC-Himawari-8 hourly fire product. Our analysis identifies a decreasing directionality in CRB distribution in the Northeast and a notable southward shift of the CRB center, especially in winter, averaging an annual southward movement of 7.5°. Additionally, we observe a pronounced skewed distribution in daily CRB, predominantly between 17:00 and 20:00. Notably, nighttime CRB in China for the years 2019, 2020, and 2021 accounted for 51.9%, 48.5%, and 38.0% respectively, underscoring its significant environmental impact. The study further quantifies the hourly emissions from CRB in China over this period, with total emissions of CO, PM10, and PM2.5 amounting to 12,236, 2,530, and 2,258 Gg, respectively. Our findings also reveal variable lag effects of CRB on regional air quality and pollutants across different seasons, with the strongest impacts in spring and more immediate effects in late autumn. This research provides valuable insights for the regulation and control of diurnal CRB before and after large-scale agricultural activities in China, as well as the associated haze and other pollution weather conditions it causes.
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Affiliation(s)
- Qiancheng Lv
- Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
| | - Zeyu Yang
- Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
| | - Ziyue Chen
- Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
| | - Manchun Li
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Bingbo Gao
- College of Land Science and Technology, China Agriculture University, Beijing, 100083, China
| | - Jing Yang
- Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
| | - Xiao Chen
- Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China
| | - Bing Xu
- Department of Earth System Science, Tsinghua University, Beijing, 100084, China
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3
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Lu Q, Han Q, Liu H, Feng L, Liu Y, Du Z, Zhang L. Molecular-level transformations of dissolved black carbon in UV-based advanced oxidation processes. WATER RESEARCH 2024; 260:121962. [PMID: 38941867 DOI: 10.1016/j.watres.2024.121962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/12/2024] [Accepted: 06/18/2024] [Indexed: 06/30/2024]
Abstract
Dissolved black carbon (DBC) released from biochar, is an essential group in the dissolved organic matter (DOM) pool and is widely distributed in aquatic environments. In various advanced oxidation processes (AOPs), DBC exhibits enhanced free radical scavenging compared to typical DOM, attributed to its smaller molecular weight and more compacted aromatic structure; however, the molecular-level transformations of DBC in different AOPs, such as UV/H2O2, UV/PDS, and UV/Chlorine, remain unclear. This study employed a DBC derived from wheat biochar for experimentation. Characterization involved ultraviolet-visible (UV-Vis) spectroscopy and fluorescence excitation-emission-matrix (EEM) spectroscopy, revealing the transformation of DBC through diminished SUVA254 values and reduced intensity of three-dimensional fluorescence peaks. Further insights into the transformation were gained through Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). After each UV-AOP treatment, a conspicuous augmentation in the oxygen content of DBC was observed. The detailed oxygenation processes were elucidated through mass difference analysis, based on 23 types of typical reactions. Results indicated that oxygenation reactions were most frequently detected in all three UV-AOP treatments. Specifically, the hydroxylation (+O) predominated in UV/H2O2, while the di-hydroxylation (+2O) prevailed in UV/PDS. UV/Chlorine treatments commonly exhibited tri-hydroxylation (+3O), with the identification of 1194 Cl-BPs of unknown structures. This study contributes to a comprehensive understanding of the molecular transformations of DBC induced by various free radicals in different UV-AOP processes, leading to a better understanding of the different fates of DBC in UV-AOP processes. In addition, the identification of DBC as a precursor of by-products will also contribute to the understanding of how to inhibit the generation of by-products.
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Affiliation(s)
- Qi Lu
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Qi Han
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Hongnan Liu
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Li Feng
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yongze Liu
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Ziwen Du
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Liqiu Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
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4
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Zhang T, Yan B, Henneman L, Kinney P, Hopke PK. Regulation-driven changes in PM 2.5 sources in China from 2013 to 2019, a critical review and trend analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173091. [PMID: 38729379 DOI: 10.1016/j.scitotenv.2024.173091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/15/2024] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
Identifying changes in source-specific fine particles (PM2.5) over time is essential for evaluating the effectiveness of regulatory measures and informing future policy decisions. After the extreme haze events in China during 2013-14, more comprehensive and stringent policies were implemented to combat PM2.5 pollution. To determine the effectiveness of these policies, it is necessary to assess the changes in the specific source types to which the regulations pertain. Multiple studies have been conducted over the past decade to apportion PM2.5. The purpose of this study was to explore the available literature and conduct a critical review of the reliable results. In total, 5008 articles were screened, but only 48 studies were included for further analysis given our inclusion criteria including covering a monitoring period of ≥1 year and having enough speciation data to provide mass closure. Using these studies, we analyzed temporal and spatial trends across China from 2013 to 2019. We observed the overall decrease in the concentration contributions from all main source categories. The reductions from industry, coal and heavy oil combustion, and the related secondary sulfate were more notable, especially from 2013 to 2016-17. The contributions from biomass burning initially decreased but then increased slightly after 2016 in some locations despite new constraints on agricultural and household burning practices. Although the contributions from vehicle emissions and related secondary nitrate decreased, they gradually became the primary contributors to PM2.5 by ∼2017. Despite the substantial improvements achieved by the air pollution regulation implementations, further improvements in air quality will require additional aggressive actions, especially those targeting vehicular emissions. Ultimately, source apportionment studies based on extended duration, fixed-site sampling are recommended to provide a more thorough understanding of the sources impacting areas and transformations in PM2.5 sources prompted by regulatory actions.
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Affiliation(s)
- Ting Zhang
- Sid and Reva Dewberry Dept. of Civil, Environmental, & Infrastructure Engineering, George Mason University, USA.
| | - Beizhan Yan
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
| | - Lucas Henneman
- Sid and Reva Dewberry Dept. of Civil, Environmental, & Infrastructure Engineering, George Mason University, USA
| | - Patrick Kinney
- Boston University School of Public Health, Boston, MA 02118, USA
| | - Philip K Hopke
- Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA; Institute for a Sustainable Environment, Clarkson University, Potsdam, NY 13699, USA
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5
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Rajesh TA, Ramachandran S. Atmospheric black carbon aerosol: Long-term characteristics, source apportionment, and trends. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:172928. [PMID: 38754497 DOI: 10.1016/j.scitotenv.2024.172928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 05/18/2024]
Abstract
Black carbon (BC) aerosols play a very significant role in influencing air quality, climate, and human health. Large uncertainties still exist in BC emissions due to limited observations on the relative source contributions of fossil fuel (ff) combustion and biomass (wood fuel, wf) burning. Our understanding of long-term changes in BC emissions, especially their source apportionment, is sparse and limited. For the first time, BC characteristics, its source apportionment into ff and wf components, and their trends measured using a multi-wavelength aethalometer over an urban location (Ahmedabad) in India covering a 14 year period (2006-2019) are comprehensively investigated. The average contributions of eBCff and eBCwf concentrations to total eBC are 80 % and 20 %, respectively, which highlights the dominance of emissions from fossil fuel combustion processes. A statistically significant increasing trend in eBC and eBCff mass concentrations at the rate of 11 % and 29%yr-1, respectively, and a decreasing trend in eBCwf concentration at the rate of 36%yr-1 are detected. The study reveals a significant decrease in biomass (wood fuel) burning emissions over the past decade and an increase in emissions from fossil fuel combustion. However, the rates of increase and decrease in eBCff and eBCwf are different, which indicate that rapid urbanization led to an increase in anthropogenic emissions, whereas an increase in usage of non-polluting fuel led to a decreasing trend in wood burning contribution. During weekdays and weekends, eBC and eBCff mass concentrations did not exhibit any statistically significant trends. However, eBCwf concentration shows a statistically significant decreasing trend during weekdays 34%yr-1 and weekends 38%yr-1. Globally, several countries are adopting various strategies and mitigation policies to improve air quality; however, significant gaps exist in their implementation towards achieving cleaner air and less polluted environment. This comprehensive study is relevant for understanding the impact of urbanization and devising better BC emission control policies.
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Affiliation(s)
- T A Rajesh
- Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad 380009, India.
| | - S Ramachandran
- Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad 380009, India
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6
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Wang JQ, Ding X, Zhang YQ, Yu QQ, Cheng Q, Wang QY, Wang XM. Characterization of biomass burning tracers in particulate matter at 12 sites in China: Significant increase of coal combustion emitted levoglucosan in northern China during winter. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174520. [PMID: 38971253 DOI: 10.1016/j.scitotenv.2024.174520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/18/2024] [Accepted: 07/03/2024] [Indexed: 07/08/2024]
Abstract
Biomass burning (BB) is the largest contributor to carbonaceous aerosols globally. Specific organic tracers can track BB particles and identify BB types. At present, there is limited information on the composition of BB tracers on a continental scale. In this study, we conducted year-round sampling of particulate matter (PM) at 12 sites in China. Nine BB tracers were measured in PM with aerodynamic diameters <1.1 μm (PM<1.1), in the range of 1.1-3.3 μm (PM1.1-3.3), and > 3.3 μm (PM>3.3). The annual average concentration of these nine BB tracers (∑9 BB tracers) in the total PM was 366 ng m-3 with the majority of levoglucosan (66 %). The concentration of ∑9 BB tracers was higher in northern China than in southern China, especially in winter. ∑9 BB tracers were most enriched in PM<1.1 (50-61 % in mass), followed by PM1.1-3.3 and PM>3.3. The highest concentrations of ∑9 BB tracers were observed in winter, while satellite-recorded fire spots were intensive in autumn and spring. The mismatch of seasonal trends between them indicated that the high levels of BB tracers in winter was not due to open BB. The composition of 4-hydroxybenzoic acid, syringic acid and vanillic acid suggested that the burning of crop residues and softwoods were the major BB types in China. The ratio of levoglucosan to mannosan could neither identify the major BB types in China nor distinguish between BB and coal combustion. Correlation analysis and the PMF model demonstrated that non-BB sources contributed 7 %-58 % to levoglucosan at the 12 sites, with coal combustion being the predominant non-BB source in China, especially in northern urban sites during winter. Our findings suggest that caution should be taken in application of these organic tracers to identify BB types and estimate BB aerosols.
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Affiliation(s)
- Jun-Qi Wang
- State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang Ding
- State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geoche mistry, Chinese Academy of Science, Guangzhou 510640, China.
| | - Yu-Qing Zhang
- State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
| | - Qing-Qing Yu
- School of Chemical Engineering and Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China
| | - Qian Cheng
- State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiao-Yun Wang
- School of Chemical Engineering and Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China
| | - Xin-Ming Wang
- State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geoche mistry, Chinese Academy of Science, Guangzhou 510640, China
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7
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Sun Y, Zhang Q, Qin Z, Li K, Zhang Y. Laboratory study on the characteristics of fresh and aged PM 1 emitted from typical forest vegetation combustion in Southwest China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 359:124505. [PMID: 38968986 DOI: 10.1016/j.envpol.2024.124505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/15/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
The frequency and intensity of forest fires are amplified by climate change. Substantial quantities of PM1 emitted from forest fires can undergo gradual atmospheric dispersion and long-range transport, thus impacting air quality far from the source. However, the chemical composition and physical properties of PM emitted from forest fires and its changes during atmospheric transport remain uncertain. In this study, the evolution of organic carbon (OC), elemental carbon (EC), water-soluble ions, and water-soluble metals in the particulate phase of smoke emitted from the typical forest vegetation combustion in Southwest China before and after photo-oxidation was investigated in the laboratory. Two aging periods of 5 and 9 days were selected. The OC and TC mass concentrations tended to decrease after 9-days aged compared to fresh emissions. OP, OC2, and OC3 in PM1 are expected to be potential indicators of fresh smoke, while OC3 and OC4 may serve as suitable markers for identifying aged carbon sources from the typical forest vegetation combustion in Southwest China. K+ exhibited the highest abundant water-soluble ion in fresh PM1, whereas NO3- became the most abundant water-soluble ion in aged PM1. NH4NO3 emerged as the primary secondary inorganic aerosol emitted from typical forest vegetation combustion in Southwest China. Notably, a 5-day aging period proved insufficient for the complete formation of the secondary inorganic aerosols NH4NO3 and (NH4)2SO4. After aging, the mass concentration of the water-soluble metal Ni in PM1 from typical forest vegetation combustion in Southwest China decreased, while the mean mass concentrations of all other water-soluble metals increased in varying degrees. These findings provide valuable data support and theoretical guidance for studying the atmospheric evolution of forest fire aerosols, as well as contribute to policy formulation and management of atmospheric environment safety and human health.
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Affiliation(s)
- Yuping Sun
- College of Energy Environment and Safety Engineering, China Jiliang University, Hangzhou, 310018, Zhejiang, China; State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Qixing Zhang
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui, China.
| | - Zhenhai Qin
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Kaili Li
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui, China
| | - Yongming Zhang
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, Anhui, China
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8
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Chong K, Wang Y, Zheng M, Qu H, Zhang R, Lee YR, Ji Y, Huey LG, Fang H, Song W, Fang Z, Liu C, Gao Y, Tang J, Wang X. Observation-Based Diagnostics of Reactive Nitrogen Recycling through HONO Heterogenous Production: Divergent Implications for Ozone Production and Emission Control. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:11554-11567. [PMID: 38885439 PMCID: PMC11223480 DOI: 10.1021/acs.est.3c07967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/20/2024]
Abstract
Understanding of nitrous acid (HONO) production is crucial to photochemical studies, especially in polluted environments like eastern China. In-situ measurements of gaseous and particulate compositions were conducted at a rural coastal site during the 2018 spring Ozone Photochemistry and Export from China Experiment (OPECE). This data set was applied to investigate the recycling of reactive nitrogen through daytime heterogeneous HONO production. Although HONO levels increase during agricultural burning, analysis of the observation data does not indicate more efficient HONO production by agricultural burning aerosols than other anthropogenic aerosols. Box and 1-D modeling analyses reveal the intrinsic relationships between nitrogen dioxide (NO2), particulate nitrate (pNO3), and nitric acid (HNO3), resulting in comparable agreement between observed and simulated HONO concentrations with any one of the three heterogeneous HONO production mechanisms, photosensitized NO2 conversion on aerosols, photolysis of pNO3, and conversion from HNO3. This finding underscores the uncertainties in the mechanistic understanding and quantitative parametrizations of daytime heterogeneous HONO production pathways. Furthermore, the implications for reactive nitrogen recycling, ozone (O3) production, and O3 control strategies vary greatly depending on the HONO production mechanism. On a regional scale, the conversion of HONO from pNO3 can drastically enhance O3 production, while the conversion from NO2 can reduce O3 sensitivity to NOx changes in polluted eastern China.
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Affiliation(s)
- Kezhen Chong
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yuhang Wang
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Mingming Zheng
- School
of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430024, China
| | - Hang Qu
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ruixiong Zhang
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Young Ro Lee
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yi Ji
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Lewis Gregory Huey
- School
of Earth and Atmospheric Sciences, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Hua Fang
- Guangzhou
Institute of Geochemistry, Chinese Academy
of Sciences, Guangzhou 510640, China
| | - Wei Song
- Guangzhou
Institute of Geochemistry, Chinese Academy
of Sciences, Guangzhou 510640, China
| | - Zheng Fang
- Guangzhou
Institute of Geochemistry, Chinese Academy
of Sciences, Guangzhou 510640, China
| | - Cheng Liu
- University
of Science and Technology of China, Hefei 230026, China
| | - Yang Gao
- Key
Laboratory of Marine Environment and Ecology, Ministry of Education
of China, Ocean University of China, Qingdao 266100, China
| | - Jianhui Tang
- Yantai Institute
of Coast Zone Research, CAS, Yantai 264003, China
| | - Xinming Wang
- Guangzhou
Institute of Geochemistry, Chinese Academy
of Sciences, Guangzhou 510640, China
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9
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Angyal A, Szoboszlai Z, Major I, Molnár M, Varga T, Török Z, Papp E, Enikő F, Gini M, Manousakas MI, Szikszai Z, Kertész Z. Characterisation of urban aerosol size distribution by radiocarbon and PIXE analyses in a middle-European urban environment for source identification: a pilot study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47258-47274. [PMID: 38987520 DOI: 10.1007/s11356-024-34215-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/29/2024] [Indexed: 07/12/2024]
Abstract
This study, conducted in Debrecen, Hungary, aimed to analyse atmospheric particulate matter (APM or PM) through radiocarbon and PIXE analyses during the winter smog (23-25 January) and spring (15-18 May) seasons. The information presented in this pilot study aims to provide insight into the importance of utilising detailed characteristics of the mass size distributions of fossil carbon (ff) and contemporary carbon (fC) content. Additionally, it seeks to compare these characteristics with the size distributions of various elements to enable even more accurate PM source identification. In winter, APM concentrations were 86.27 μg/m3 (total), 17.07 μg/m3 (fC) and 10.4 μg/m3 (ff). In spring, these values changed to 29.5 μg/m3, 2.64 μg/m3 and 7.01 μg/m3, respectively. Notably, differences in mass size distribution patterns were observed between the two seasons, suggesting varied sources for contemporary carbon. Biomass burning emerged as a crucial source during the smog period, supported by similar MMAD (Mass Median Aerodynamic Diameter) values and a strong correlation (r = 0.95, p < 0.01) between potassium and fC. In spring, a significant change in the concentration and distribution of fC occurred, with a broad, coarse mode and a less prominent accumulation mode. Ff was found to have similar distributions as PM, with nearly the same MMADs, during both periods. Finally, a comprehensive comparison of modal characteristics identified specific sources for the various components, including biomass burning, vehicle exhaust, coal and oil combustion, vehicle non-exhaust, road dust, tyre abrasion, mineral dust and biogenic emission. This study showcases how using radiocarbon and PIXE analysis in size distribution data can enhance our understanding of the sources of PM and their effects on different size fractions of PM.
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Affiliation(s)
- Anikó Angyal
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary.
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary.
| | - Zoltán Szoboszlai
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - István Major
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Mihály Molnár
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Tamás Varga
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Zsófia Török
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Enikő Papp
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Furu Enikő
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Maria Gini
- Institute of Nuclear & Radiological Science & Technology, NCSR "Demokritos", Energy & Safety, 15310, Athens, Greece
| | | | - Zita Szikszai
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
| | - Zsófia Kertész
- HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
- International Radiocarbon AMS Competence and Training Center (INTERACT), HUN-REN Institute for Nuclear Research (ATOMKI), P.O Box 51, Debrecen, 4001, Hungary
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10
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Inlaung K, Chotamonsak C, Macatangay R, Surapipith V. Assessment of Transboundary PM2.5 from Biomass Burning in Northern Thailand Using the WRF-Chem Model. TOXICS 2024; 12:462. [PMID: 39058114 PMCID: PMC11280843 DOI: 10.3390/toxics12070462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/23/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024]
Abstract
Air pollution, particularly PM2.5, poses a significant environmental and public health concern, particularly in northern Thailand, where elevated PM2.5 levels are prevalent during the dry season (January-May). This study examines the influx and patterns of transboundary biomass burning PM2.5 (TB PM2.5) in this region during the 2019 dry season using the WRF-Chem model. The model's reliability was confirmed through substantial correlations between model outputs and observations from the Pollution Control Department (PCD) of Thailand at 10 monitoring stations. The findings indicate that TB PM2.5 significantly influences local PM2.5 levels, often surpassing contributions from local sources. The influx of TB PM2.5 began in January from southern directions, intensifying and shifting northward, peaking in March with the highest TB PM2.5 proportions. Elevated levels persisted through April and declined in May. Border provinces consistently exhibited higher TB PM2.5 concentrations, with Chiang Rai province showing the highest average proportion, reaching up to 45%. On days when PM2.5 levels were classified as 'Unhealthy for Sensitive Groups' or 'Unhealthy', TB PM2.5 contributed at least 50% to the total PM2.5 at all stations. Notably, stations in Chiang Rai and Nan showed detectable TB PM2.5 even at 'Very Unhealthy' levels, underscoring the significant impact of TB PM2.5 in the northern border areas. Effective mitigation of PM2.5-related health risks requires addressing PM2.5 sources both within and beyond Thailand's borders.
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Affiliation(s)
- Kevalin Inlaung
- Office of Research Administration, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Chakrit Chotamonsak
- Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Ronald Macatangay
- National Astronomical Research Institute of Thailand (Public Organization), Chiang Mai 50180, Thailand;
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11
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Li J, Huang C, Zhang C, Wang H, Song L, Wang B. Underestimated contribution of open biomass burning to terpenoid emissions revealed by a novel hourly dynamic inventory. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:172764. [PMID: 38670379 DOI: 10.1016/j.scitotenv.2024.172764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Terpenoids play a crucial role in atmospheric chemistry, contributing significantly to the formation of ozone and secondary organic aerosol. However, the accurate quantification of terpenoid emissions from biomass burning is currently lacking, leading to underestimated air quality impacts. This study developed a near real-time hourly open biomass burning (OBB) emission inventory named OBEIC, which incorporated geostationary and polar-orbiting satellite fire radiative power. The OBEIC inventory provided emission estimates of 69 terpenoids, categorized into four groups, at an hourly resolution. Monoterpenes were the dominant contributors to the total emissions, accounting for 58 % of the total terpenoid emissions from OBB. Notably, only 24 % of the total monoterpenes emitted from OBB were accounted for by α-pinene and β-pinene, indicating the importance of quantifying emissions of other monoterpene species such as limonene and camphene. Additionally, oxygenated terpenoids, which were previously overlooked, contribute to 20 % of total terpenoid emissions from OBB. Diurnally, the emissions of terpenoids were primarily concentrated during the daytime (61 %); however, this study revealed the significance of nighttime emissions (39 %) as well. When compared to the biogenic and anthropogenic emissions, OBB made substantial contributions to nighttime isoprene (99.8 %), monoterpene (66.8 %), and sesquiterpene (61.7 %) emissions where OBB occurs (in 3 km range), suggesting its significant role in nighttime secondary pollutant formation. The methodology developed in this study has the potential to reduce uncertainties in OBB emissions estimation.
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Affiliation(s)
- Jiangyong Li
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China; College of Environment and Climate, Jinan University, Guangzhou 511443, China
| | - Caibao Huang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China; College of Environment and Climate, Jinan University, Guangzhou 511443, China
| | - Chunlin Zhang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, Guangzhou 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Jinan University, Guangzhou 511443, China; College of Environment and Climate, Jinan University, Guangzhou 511443, China.
| | - Hao Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, Guangzhou 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Jinan University, Guangzhou 511443, China; College of Environment and Climate, Jinan University, Guangzhou 511443, China
| | - Lin Song
- College of Environment and Climate, Jinan University, Guangzhou 511443, China
| | - Boguang Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, Guangzhou 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Jinan University, Guangzhou 511443, China; College of Environment and Climate, Jinan University, Guangzhou 511443, China.
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12
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Zhao X, Yumei Cao, Cheng Z. Perception matters: How air pollution influences life satisfaction in China. Heliyon 2024; 10:e31927. [PMID: 38845965 PMCID: PMC11154605 DOI: 10.1016/j.heliyon.2024.e31927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 05/21/2024] [Accepted: 05/24/2024] [Indexed: 06/09/2024] Open
Abstract
Academic studies on environmental pollution have convincingly acknowledged the salient relevance of ambient pollutant emissions on individual life satisfaction. However, an understanding of how the different dimensions of air pollution influence public self-assessment of their living condition is required. This research investigates whether objective pollutant emissions and subjective evaluation influence individual life satisfaction. The findings were based on data from the China Environment Yearbook and China Social Survey in 2019. The multi-level linear regression model found that air pollutants emissions, including particulate matter (PM) and sulfur dioxide (SO2), failed to explain the variations in public life satisfaction because of the lag effect of public perception. A significant nexus between perceived air pollution and public life satisfaction was observed at a significance level of 0.01. Specially, as the perceived air pollution by the public increased by one-point, life satisfaction decreased by 0.22 on a scale of 1-10, on average. Heterogeneous analysis based on income further suggested the salient negative effect of PM emissions on life satisfaction only occurred in the high-income group. The findings were robust after various methodological analyses. This study has theoretical implications for understanding the effects of air pollution on public subjective perception and provides guidance for how the government can manage the relationship between environmental governance and life satisfaction.
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Affiliation(s)
- Xinghua Zhao
- Research Center for Government Governance and Public Policy, Business School, Yangzhou University, Yangzhou, China, NO.88, Daxuenan Road, Hanjiang District, Yangzhou City, Jiangsu Province, 225127, China
| | - Yumei Cao
- School of Political Science and Law, University of Jinan, No.336 Nanxinzhuangxi Road, Jinan City, Shandong Province, 250022, China
| | - Zheng Cheng
- Research Center for Government Governance and Public Policy, Business School, Yangzhou University, Yangzhou, China, NO.88, Daxuenan Road, Hanjiang District, Yangzhou City, Jiangsu Province, 225127, China
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13
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Zhu J, Yue X, Zhou H, Che H, Xia X, Wang J, Zhao T, Tian C, Liao H. The multi-year contribution of Indo-China peninsula fire emissions to aerosol radiation forcing in southern China during 2013-2019. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172337. [PMID: 38608908 DOI: 10.1016/j.scitotenv.2024.172337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 04/06/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024]
Abstract
Fire emissions in Southeast Asia transported to southern China every spring (March-May), influencing not only the air quality but also the weather and climate. However, the multi-year variations and magnitude of this impact on aerosol radiation forcing in southern China remain unclear. Here, we quantified the multi-year contributions of fire emissions in Indo-China Peninsula (ICP) region to aerosol radiation forcing in the various southern Chinese provinces during the fire season (March-May) of 2013-2019 combining the 3-dimension chemical transport model and the Column Radiation Model (CRM) simulations. The models' evaluations showed they reasonably capture the temporal and spatial distribution of surface aerosol concentrations and column aerosol optical properties over the study regions. The fire emissions over the ICP region were found to increase the aerosol optical depth (AOD) value by 0.1 (15 %) and reduce the single scattering albedo (SSA) in three southern regions of China (Yunnan-YN, Guangxi-GX, and Guangdong-GD from west to east), owing to increases in the proportions of black carbon (BC, 0.4 % ± 0.1 %) and organic carbon (OC, 3.0 % ± 0.9 %) within the aerosol compositions. The transported smoke aerosols cooled surface but heated the atmosphere in the southern China regions, with the largest mean reduction of -5 Wm-2 (-3 %) in surface shortwave radiation forcing and the maximum daily contributions of about -15 Wm-2 (-15 %) to the atmosphere radiation forcing in the GX region, followed by the GD and YN regions. The impacts of ICP fire emissions on aerosol optical and radiative parameters declined during 2013-2019, with the highest rate of 0.393 ± 0.478 Wm-2 yr-1 in the GX for the shortwave radiation forcing in the atmosphere. Besides, their yearly changes in the contribution were consistent with the annual fire emissions in the ICP region. Such strong radiative perturbations of ICP fire emissions were expected to influence regional meteorology in southern China and should be considered in the climate simulations.
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Affiliation(s)
- Jun Zhu
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China
| | - Xu Yue
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China.
| | - Hao Zhou
- College of Meteorology and Oceanography, National University of Defense Technology, Changsha, 410073, China
| | - Huizheng Che
- State Key Laboratory of Severe Weather (LASW) and Key Laboratory of Atmospheric Chemistry (LAC), Chinese Academy of Meteorological Sciences, CMA, Beijing, 100081, China
| | - Xiangao Xia
- LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Jun Wang
- Center of Global and Regional Environmental Research and Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa, USA
| | - Tianliang Zhao
- Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Chenguang Tian
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China
| | - Hong Liao
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China
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14
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Perraud V, Blake DR, Wingen LM, Barletta B, Bauer PS, Campos J, Ezell MJ, Guenther A, Johnson KN, Lee M, Meinardi S, Patterson J, Saltzman ES, Thomas AE, Smith JN, Finlayson-Pitts BJ. Unrecognized volatile and semi-volatile organic compounds from brake wear. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:928-941. [PMID: 38635247 DOI: 10.1039/d4em00024b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Motor vehicles are among the major sources of pollutants and greenhouse gases in urban areas and a transition to "zero emission vehicles" is underway worldwide. However, emissions associated with brake and tire wear will remain. We show here that previously unrecognized volatile and semi-volatile organic compounds, which have a similarity to biomass burning emissions are emitted during braking. These include greenhouse gases or, these classified as Hazardous Air Pollutants, as well as nitrogen-containing organics, nitrogen oxides and ammonia. The distribution and reactivity of these gaseous emissions are such that they can react in air to form ozone and other secondary pollutants with adverse health and climate consequences. Some of the compounds may prove to be unique markers of brake emissions. At higher temperatures, nucleation and growth of nanoparticles is also observed. Regions with high traffic, which are often disadvantaged communities, as well as commuters can be impacted by these emissions even after combustion-powered vehicles are phased out.
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Affiliation(s)
- V Perraud
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - D R Blake
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - L M Wingen
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - B Barletta
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - P S Bauer
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - J Campos
- Department of Earth System Science, University of California, Irvine, CA 92697, USA
| | - M J Ezell
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - A Guenther
- Department of Earth System Science, University of California, Irvine, CA 92697, USA
| | - K N Johnson
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - M Lee
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - S Meinardi
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - J Patterson
- Department of Earth System Science, University of California, Irvine, CA 92697, USA
| | - E S Saltzman
- Department of Earth System Science, University of California, Irvine, CA 92697, USA
| | - A E Thomas
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - J N Smith
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
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15
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Fang Z, Lai A, Dongmei Cai, Chunlin Li, Carmieli R, Chen J, Wang X, Rudich Y. Secondary Organic Aerosol Generated from Biomass Burning Emitted Phenolic Compounds: Oxidative Potential, Reactive Oxygen Species, and Cytotoxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8194-8206. [PMID: 38683689 PMCID: PMC11097630 DOI: 10.1021/acs.est.3c09903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 04/06/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
Phenolic compounds are largely emitted from biomass burning (BB) and have a significant potential to form SOA (Phc-SOA). However, the toxicological properties of Phc-SOA remain unclear. In this study, phenol and guaiacol were chosen as two representative phenolic gases in BB plumes, and the toxicological properties of water-soluble components of their SOA generated under different photochemical ages and NOx levels were investigated. Phenolic compounds contribute greatly to the oxidative potential (OP) of biomass-burning SOA. OH-adducts of guaiacol (e.g., 2-methoxyhydroquinone) were identified as components of guaiacol SOA (GSOA) with high OP. The addition of nitro groups to 2,5-dimethyl-1,4-benzoquinone, a surrogate quinone compound in Phc-SOA, increased its OP. The toxicity of both phenol SOA (PSOA) and GSOA in vitro in human alveolar epithelial cells decreased with aging in terms of both cell death and cellular reactive oxygen species (ROS), possibly due to more ring-opening products with relatively low toxicity. The influence of NOx was consistent between cell death and cellular ROS for GSOA but not for PSOA, indicating that cellular ROS production does not necessarily represent all processes contributing to cell death caused by PSOA. Combining different acellular and cellular assays can provide a comprehensive understanding of aerosol toxicological properties.
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Affiliation(s)
- Zheng Fang
- Department
of Earth and Planetary Sciences, Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Alexandra Lai
- Department
of Earth and Planetary Sciences, Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Dongmei Cai
- Shanghai
Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP
3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Chunlin Li
- Department
of Earth and Planetary Sciences, Weizmann
Institute of Science, Rehovot 76100, Israel
- College
of Environmental Science and Engineering, Tongji University, Shanghai 200072, China
| | - Raanan Carmieli
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Jianmin Chen
- Shanghai
Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP
3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Xinming Wang
- State
Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory
of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy
of Sciences, Guangzhou 510640, China
| | - Yinon Rudich
- Department
of Earth and Planetary Sciences, Weizmann
Institute of Science, Rehovot 76100, Israel
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16
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Luo N, Yu R, Wen B, Li X, Zhang Q, Li X. Investigation of 200 anthropogenic activities in a representative alpine peatland in the Altay Mountains, northwestern China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:34558-34568. [PMID: 38709407 PMCID: PMC11136768 DOI: 10.1007/s11356-024-33498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
Peatlands records can be used to reconstruct and understand the history of environmental evolution, as well as a more accurate reflection of human activities. The black carbon (BC) and polycyclic aromatic hydrocarbons (PAHs) are ideal natural archives of anthropogenic activities. To identify the information of anthropogenic activities recorded by peatlands in the middle and high latitudes of the alpine mountains in the arid and semi-arid regions of China. this study analyzed the concentrations of BC, δ13C ratios of BC, PAHs, and molecular diagnostic ratios of PHAs (including Benzo(a) anthracene (BaA), Chrysene (Chr), fluoranthene (Flt), anthracene (Ant), phenanthrene (Phe), Benzo(a) pyrene (BaP), and pyrene (Pyr) in a 30-cm peat profile from the Altay Mountain, northwestern China. Our results revealed concentrations of BC from 11.71 to 67.5 mg·g-1, and PAHs from 168.09 to 263.53 ng·g-1. The δ13CBC value ranged from - 31.37 to - 26.27‰, with an average of - 29.54‰, indicating that the BC mainly comes from biomass combustion. The ratios of BaA/(BaA + Chr), Flt/(Flt + Pyr), and Ant/(Ant + Phe) exceeded 0.35, 0.5, and 0.1, respectively, revealing that the PAHs pollutants mainly originated from the combustion of biomass and fossil fuel burning. Furthermore, based on these findings and our knowledge of social development in Altay, industrial transport and tourism have influenced the emission, transport, and deposition of BC and PAH in peatlands in the Altay mountains since the 1980s. After 1980, pollutant concentrations decreased with the implementation of environmental policies. The results not only reveal the influence of anthropogenic activities on the sedimentary characteristics of peatlands in the Altay Mountains, but also provide an important theoretical basis for the conservation of fragile mountain peatlands.
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Affiliation(s)
- Nana Luo
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Rui Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Bolong Wen
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
| | - Xiaoyu Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Qilin Zhang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiujun Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
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17
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Chowdhury S, Hänninen R, Sofiev M, Aunan K. Fires as a source of annual ambient PM 2.5 exposure and chronic health impacts in Europe. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 922:171314. [PMID: 38423313 DOI: 10.1016/j.scitotenv.2024.171314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/29/2024] [Accepted: 02/25/2024] [Indexed: 03/02/2024]
Abstract
Chronic exposure to ambient PM2.5 is the largest environmental health risk in Europe. We used a chemical transport model and recent exposure response functions to simulate ambient PM2.5, contribution from fires and related health impacts over Europe from 1990 to 2019. Our estimation indicates that the excess death burden from exposure to ambient PM2.5 declined across Europe at a rate of 10,000 deaths per year, from 0.57 million (95 % confidence intervals: 0.44-0.75 million) in 1990 to 0.28 million (0.19-0.42 million) in the specified period. Among these excess deaths, approximately 99 % were among adults, while only around 1 % occurred among children. Our findings reveal a steady increase in fire mortality fractions (excess deaths from fires per 1000 deaths from ambient PM2.5) from 2 in 1990 to 13 in 2019. Notably, countries in Eastern Europe exhibited significantly higher fire mortality fractions and experienced more pronounced increases compared to those in Western and Central Europe. We performed sensitivity analyses by considering fire PM2.5 to be more toxic as compared to other sources, as indicated by recent studies. By considering fire PM2.5 to be more toxic than other PM2.5 sources results in an increased relative contribution of fires to excess deaths, reaching 2.5-13 % in 2019. Our results indicate the requirement of larger mitigation and adaptation efforts and more sustainable forest management policies to avert the rising health burden from fires.
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Affiliation(s)
| | | | | | - Kristin Aunan
- CICERO Center for International Climate Research, Oslo, Norway
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18
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Gosukonda JS, Degala VN, Singh HP. Assessment of energy cane bagasse-derived cellulosic microfiber hydrogels on the growth of potted chili peppers. Heliyon 2024; 10:e28972. [PMID: 38601519 PMCID: PMC11004581 DOI: 10.1016/j.heliyon.2024.e28972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 02/27/2024] [Accepted: 03/27/2024] [Indexed: 04/12/2024] Open
Abstract
Energy cane (Saccharum spp.) bagasse, a type of biomass waste, is often underutilized, burned, or left to dispose of itself. This research aimed to evaluate the potential of converting this bagasse into high-value cellulosic microfiber hydrogels (CMH) for water conservation and potted chili (Capsicum annuum) plant growth. CMH offers a biodegradable alternative to synthetic polyacrylamide (PA) hydrogels and provides the dual benefit of improved water use efficiency and reduced environmental impact due to their ability to naturally break down in the soil. In this study, CMH and PA hydrogels were compared for water retention value (WRV), and reswelling kinetics (RK), as well as their effects on plant height, leaf count, root-to-shoot ratios (R:S ratio), and soil moisture retention. Two versions of CMH, CMH65 and CMH60, were prepared with varying cellulose-chitosan ratios: 65:35 and 60:40, respectively. The hydrogels were tested at four concentrations (0, 0.5, 1.0, and 2.0% w/w) by being mixed in Promix® soil. Observations were recorded over a 16-day period without additional water. Also, the WRV of hydrogels at 240 min and RK (10-180 min) were compared over three swelling-deswelling cycles. The PA hydrogel exhibited higher WRV (exceeding 450%) compared to CMH (45%). However, PA led to reduced plant height, leaf count, and R:S ratio when compared to higher concentrations of CMH65 and CMH60. In general, CMH60 (0.5% and 2%) exhibited superior plant growth. All hydrogels exhibited a significant decrease (p < 0.05) in WRV across successive cycles. Notably, during cycle 2, both CMH65 and CMH60 peaked in WRV at 10 and 20 min, respectively, compared to cycle 1. This study demonstrates the potential of bagasse-derived hydrogels as a value-added product for water conservation and crop growth.
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Affiliation(s)
| | - Venkata N. Degala
- Agricultural Research Station, Fort Valley State University, Fort Valley, GA, 31030, USA
| | - Hari P. Singh
- Agricultural Research Station, Fort Valley State University, Fort Valley, GA, 31030, USA
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19
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Wang Y, Liang L, Xu W, Liu C, Cheng H, Liu Y, Zhang G, Xu X, Yu D, Wang P, Song Q, Liu J, Cheng Y. Influence of meteorological factors on open biomass burning at a background site in Northeast China. J Environ Sci (China) 2024; 138:1-9. [PMID: 38135377 DOI: 10.1016/j.jes.2023.02.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 12/24/2023]
Abstract
Biomass burning (BB) is a very important emission source that significantly adversely impacts regional air quality. BB produces a large number of primary organic aerosol (POA) and black carbon (BC). Besides, BB also provides many precursors for secondary organic aerosol (SOA) generation. In this work, the ratio of levoglucosan (LG) to organic carbon (OC) and the fire hotspots map was used to identify the open biomass burning (OBB) events, which occurred in two representative episodes, October 13 to November 30, 2020, and April 1 to April 30, 2021. The ratio of organic aerosol (OA) to reconstructed PM2.5 concentration (PM2.5*) increased with the increase of LG/OC. When LG/OC ratio is higher than 0.03, the highest OA/PM2.5* ratio can reach 80%, which means the contribution of OBB to OA is crucial. According to the ratio of LG to K+, LG to mannosan (MN) and the regional characteristics of Longfengshan, it can be determined that the crop residuals are the main fuel. The occurrence of OBB coincides with farmers' preferred choices, i.e., burning biomass in "bright weather". The "bright weather" refers to the meteorological conditions with high temperature, low humidity, and without rain. Meteorological factors indirectly affect regional biomass combustion pollution by influencing farmers' active choices.
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Affiliation(s)
- Yulong Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Linlin Liang
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China.
| | - Wanyun Xu
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Chang Liu
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Hongbing Cheng
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Yusi Liu
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Gen Zhang
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Xiaobin Xu
- State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Dajiang Yu
- Longfengshan Regional Background Station, China Meteorological Administration, Heilongjiang 150200, China
| | - Peng Wang
- Longfengshan Regional Background Station, China Meteorological Administration, Heilongjiang 150200, China
| | - Qingli Song
- Heilongjiang Climate Center, Heilongjiang 150030, China
| | - Jiumeng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Yuan Cheng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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20
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Seok MW, Ko YH, Park KT, Kim TW. Possible enhancement in ocean productivity associated with wildfire-derived nutrient and black carbon deposition in the Arctic Ocean in 2019-2021. MARINE POLLUTION BULLETIN 2024; 201:116149. [PMID: 38364527 DOI: 10.1016/j.marpolbul.2024.116149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024]
Abstract
The Arctic is severely affected by climate change and various forms of environmental pollution. Enriched with nutrients and light-absorbing compounds, the wildfire plume has the potential to affect biological carbon fixation and sequestration within the Arctic Ocean. In this study, we utilized satellite-derived oceanic data (phytoplankton and sea ice) and atmospheric reanalysis products (black carbon, BC, indicative of wildfire impact) to evaluate the effect of the pronounced increase in wildfires from 2019 to 2021 on the East Siberian Sea. During these years, chlorophyll-a levels rose by ∼213 % compared to the previous decadal average, which had notably lower wildfire activities. This increase in chlorophyll-a is attributable to the deposition of nitrogen from the wildfire plume. Concurrently, the period required for sea ice concentration to decrease by 25 % was on average ∼ 10 days shorter than usual. This suggests that BC-induced acceleration of sea ice melting might extend the growing season for phytoplankton.
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Affiliation(s)
- Min-Woo Seok
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Young Ho Ko
- OJeong Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Ki-Tae Park
- Division of Polar Climate Sciences, Korea Polar Research Institute, Incheon, Republic of Korea; now at Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, Gangwon-do 24252, Republic of Korea
| | - Tae-Wook Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; OJeong Resilience Institute, Korea University, Seoul 02841, Republic of Korea.
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21
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Lopes AA, Viriyavipart A. Crop residue burning increased during the COVID-19 lockdown: A case study of rural India. Heliyon 2024; 10:e27910. [PMID: 38510008 PMCID: PMC10950696 DOI: 10.1016/j.heliyon.2024.e27910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/17/2024] [Accepted: 03/08/2024] [Indexed: 03/22/2024] Open
Abstract
The customary practice of crop residue burning (CRB) is a major policy concern across several developing economies because of the associated increase in air pollution and reduction in soil quality. CRB poses a hazard to public health and sustainable farmland management. We collected original survey data from a panel of 400 wheat farmers on CRB choices during April-May of 2019 and 2020 - with the latter coinciding with India's COVID-19 nationwide lockdown. This timeline of events facilitated a unique identification of changes in CRB that are attributable to the lockdown. Several studies find that lockdowns during 2020 had beneficial effects on the environment owing to reduced economic activity. However, our findings indicate that CRB may have unintentionally increased during the lockdown. A binary variable regression framework analyzes the determinants of CRB choices of farmers over two years. We control for farmers' opinions on various socioeconomic aspects of the pandemic lockdown to examine its effects on their CRB decisions. The lockdown significantly increased the likelihood of CRB by up to 12%. Furthermore, farmers who lost agricultural income and those compelled to sell assets during the lockdown were 22% and 19% more inclined, respectively, to choose CRB. Labor mobility ceased during the lockdown and increased the cost of environmentally friendly farmland management; this increased the likelihood of CRB by 6%. This study contributes to a growing literature on the unintentional consequences of pandemic lockdowns.
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Affiliation(s)
- Adrian A. Lopes
- Department of Economics, School of Business Administration, American University of Sharjah, United Arab Emirates
| | - Ajalavat Viriyavipart
- Department of Economics, School of Business Administration, American University of Sharjah, United Arab Emirates
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22
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Liu B, Xia H, Jiang C, Jiang C, Riaz M, Yang L, Chen Y, Fan X, Zhang Z, Duan X, Wu M, Xia X. Straw Addition Enhances Crop Yield, Soil Aggregation, and Soil Microorganisms in a 14-Year Wheat-Rice Rotation System in Central China. PLANTS (BASEL, SWITZERLAND) 2024; 13:985. [PMID: 38611514 PMCID: PMC11013638 DOI: 10.3390/plants13070985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/16/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024]
Abstract
Straw return utilizes waste resources to reduce the use of chemical fertilizers worldwide. However, information is still lacking on the relative impact of straw return on soil fertility, the nutrient composition of different soil aggregates, and soil microbial communities. Therefore, this study aimed to understand the effects of different management practices on the crop yield, soil fertility, and soil community composition in a 14-year wheat-rice rotation system. The treatments included a control (without fertilizer and straw addition), chemical fertilization (NPK), straw return without fertilizer (S), and straw addition with chemical fertilizer (NPKS). The results showed that NPKS improved the wheat and rice yield by 185.12% and 88.02%, respectively, compared to the CK treatment. Additionally, compared to the CK treatment, the N, P, and K contents of the wheat stem were increased by 39.02%, 125%, and 20.23% under the NPKS treatment. Compared to the CK treatment, SOM, TN, TP, AN, AP, AK, CEC, AFe, AMn, ACu, and AZn were increased by 49.12%, 32.62%, 35.06%, 22.89%, 129.36%, 48.34%, 13.40%, 133.95%, 58.98%, 18.26% and 33.33% under the NPKS treatment, respectively. Moreover, straw addition promoted the creation and stabilization of macro-aggregates in crop soils. The relative abundance of macro-aggregates (0.25-2 mm) increased from 37.49% to 52.97%. Straw addition was associated with a higher proportion of aromatic and carbonyl carbon groups in the soil, which, in turn, promoted the formation of macro-aggregates. Redundancy analysis showed that straw return significantly increased the microbial community diversity. These findings demonstrate that straw addition together with chemical fertilizer could increase the crop yield by improving soil fertility, soil aggregate stability, and the diversity of fungi.
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Affiliation(s)
- Bo Liu
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Hao Xia
- Tobacco Research Institute, Anhui Academy of Agricultural Sciences (AAAS), Hefei 230001, China
| | - Chaoqiang Jiang
- Tobacco Research Institute, Anhui Academy of Agricultural Sciences (AAAS), Hefei 230001, China
| | - Cuncang Jiang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Muhammad Riaz
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
| | - Li Yang
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Yunfeng Chen
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Xianpeng Fan
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Zhiyi Zhang
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Xiaoli Duan
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Maoqian Wu
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
| | - Xiange Xia
- Key Laboratory of Fertilization from Agricultural Wastes, Ministry of Agriculture and Rural Affairs, National Station for Qianjiang Agro-Environment, Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China (Y.C.); (M.W.)
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23
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Li R, Yan C, Meng Q, Yue Y, Jiang W, Yang L, Zhu Y, Xue L, Gao S, Liu W, Chen T, Meng J. Key toxic components and sources affecting oxidative potential of atmospheric particulate matter using interpretable machine learning: Insights from fog episodes. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133175. [PMID: 38086305 DOI: 10.1016/j.jhazmat.2023.133175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/07/2023] [Accepted: 12/02/2023] [Indexed: 02/08/2024]
Abstract
Fog significantly affects the air quality and human health. To investigate the health effects and mechanisms of atmospheric fine particulate matter (PM2.5) during fog episodes, PM2.5 samples were collected from the coastal suburb of Qingdao during different seasons from 2021 to 2022, with the major chemical composition in PM2.5 analyzed. The oxidative potential (OP) of PM2.5 was determined using the dithiothreitol (DTT) method. A positive matrix factorization model was adopted for PM2.5. Interpretable machine learning (IML) was used to reveal and quantify the key components and sources affecting OP. PM2.5 exhibited higher oxidative toxicity during fog episodes. Water-soluble organic carbon (WSOC), NH4+, K+, and water-soluble Fe positively affected the enhancement of DTTV (volume-based DTT activity) during fog episodes. The IML analysis demonstrated that WSOC and K+ contributed significantly to DTTV, with values of 0.31 ± 0.34 and 0.27 ± 0.22 nmol min-1 m-3, respectively. Regarding the sources, coal combustion and biomass burning contributed significantly to DTTV (0.40 ± 0.38 and 0.39 ± 0.36 nmol min-1 m-3, respectively), indicating the significant influence of combustion-related sources on OP. This study provides new insights into the effects of PM2.5 compositions and sources on OP by applying IML models.
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Affiliation(s)
- Ruiyu Li
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Caiqing Yan
- Environment Research Institute, Shandong University, Qingdao 266237, China.
| | - Qingpeng Meng
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Yang Yue
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Wei Jiang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Lingxiao Yang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Yujiao Zhu
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Likun Xue
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Shaopeng Gao
- Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Weijian Liu
- College of Environmental and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Tianxing Chen
- College of Engineering, University of Washington, 1410 NE Campus Pkwy, Seattle, WA 98195, USA
| | - Jingjing Meng
- College of Environment and Planning, Liaocheng University, Liaocheng 252000, China
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24
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Guo Y, Gong D, Wang H, Li Q, Wu G, Wang Y, Cai H, Yuan B, Wang B, Liu SC. Sources of elevated organic acids in the mountainous background atmosphere of southern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169673. [PMID: 38199347 DOI: 10.1016/j.scitotenv.2023.169673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/12/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024]
Abstract
Formic acid (FA) and acetic acid (AA) are pivotal organic acids in the troposphere, significantly influencing atmospheric chemistry. However, their abundance and sources in the mountainous background atmosphere remain underexplored. We undertook continuous measurements of FA and AA in Nanling mountains, southern China, during autumn 2020 using a high-resolution time-of-flight chemical ionization mass spectrometer (HR-ToF-CIMS). Both acids registered higher concentrations than in other global high-altitude or forested locations, averaging at 0.89 (max: 3.91) and 0.95 (max: 3.52) ppbv for FA and AA, respectively. High concentrations of FA and AA in this forested background area arose from secondary formation and biomass burning, collectively contributing 71 % to 89 %. During episodes, FA and AA concentrations surged 2-3 times, owing to the enhanced atmospheric oxidation capacity. The secondary FA production was predominantly due to isoprene oxidation among the VOC precursors studied. However, observed inconsistencies between calculated and actual FA concentrations suggest overlooked precursors or mechanisms warranting further investigation. Our findings can enhance the understanding of organic acid characteristics and the interplay of biogenic and anthropogenic sources in the background atmosphere.
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Affiliation(s)
- Yan Guo
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China
| | - Daocheng Gong
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China
| | - Hao Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China.
| | - Qinqin Li
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China
| | - Gengchen Wu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China
| | - Yu Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China
| | - Huang Cai
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China
| | - Bin Yuan
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China.
| | - Boguang Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China
| | - Shaw Chen Liu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Australia-China Centre for Air Quality Science and Management (Guangdong), Guangzhou, China; Guangdong Provincial Observation and Research Station for Atmospheric Environment and Carbon Neutrality in Nanling Forests, China.
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25
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Nabi F, Chen H, Sajid S, Yang G, Kyung Y, Shah SMM, Wang X, Hu Y. Degradation of agricultural waste is dependent on chemical fertilizers in long-term paddy-dry rotation field. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 355:120460. [PMID: 38430881 DOI: 10.1016/j.jenvman.2024.120460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/25/2024] [Accepted: 02/20/2024] [Indexed: 03/05/2024]
Abstract
The practice of returning straw to agricultural fields is a globally employed technique. Such agricultural fields also receive a significant amount of nitrogen (N) and phosphorus (P) fertilizers, because these two macronutrients are essential for plant growth and development. However, the consequences of such macronutrients input on straw decomposition, soil dissolved organic matter (DOM), key microbes, and lignocellulolytic enzymes are still unclear. In a similar aim, we designed a long-term straw returning study without and with different N and P nutrient supplementation: CK (N0P0), T1 (N120P0), T2 (N120P60), T3 (N120P90), T4 (N120P120), T5 (N0P90), T6 (N60P90), and T7 (N180P90), and evaluated their impact on rice and oilseed rape yield, soil DOM, enzymes, lignocellulose content, microbial diversity, and composition. We found straw returning improved overall yield in all treatments and T7 showed the highest yield for oilseed rape (30.31-38.87 g/plant) and rice (9.14-9.91 t/ha) during five-years of study. The fertilizer application showed a significant impact on soil physicochemical properties, such as water holding capacity and soil porosity decreased, and bulk density increased in fertilized treatments, as compared to CK. Similarly, significantly low OM, cellulose, hemicellulose, and lignin content were found in T7, T4, T3, and T2, while high values were found in CK and T5, respectively. The fluorescence excitation-emission matrix spectra of DOM of different treatments revealed that T3, T7, T4, and T6 showed high peak M (microbial by-products), peak A and peak C (humic acid-like) as compared to others. The microbial composition was also distinctive in each treatment and a high relative abundance of Chloroflexi, Actinobacteriota, Ascomycota, and Basidiomycota were found in T2 and T3 treatments, respectively. These findings indicate that the decomposition of straw in the agricultural field was dependent on nutrients input, which facilitated key microbial growth and impacted positively on lignocellulolytic enzymes, which further aided the breakdown of all components of straw in the field efficiently. On the other hand, high input of chemical based fertilizers to soil can lead to several environmental issues, such as nutrient imbalance, nutrient runoff, soil pH change and changes in microbial activities. Keeping that in consideration, we recommend moderate fertilizer dosage (N120P90) in such fields to achieve higher decomposition of crop straw with a small yield compromise.
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Affiliation(s)
- Farhan Nabi
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China; College of Nature Resources and Environment, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Hong Chen
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
| | - Sumbal Sajid
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China; Shenzhen Institute of Guangdong Ocean University, Binhai 2nd Road, Shenzhen, 518120, China
| | - Guotao Yang
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
| | - Yun Kyung
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, South Korea; Department of Environmental Engineering and Earth Science, Clemson University, SC, 29634, USA
| | - Syed Muhammad Mustajab Shah
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
| | - Xuechun Wang
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China.
| | - Yungao Hu
- College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China.
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26
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Noblet C, Lestremau F, Collet S, Chatellier C, Beaumont J, Besombes JL, Albinet A. Aerosolomics based approach to discover source molecular markers: A case study for discriminating residential wood heating vs garden green waste burning emission sources. CHEMOSPHERE 2024; 352:141242. [PMID: 38280648 DOI: 10.1016/j.chemosphere.2024.141242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/29/2024]
Abstract
Biomass burning is a significant source of particulate matter (PM) in ambient air and its accurate source apportionment is a major concern for air quality. The discrimination between residential wood heating (RWH) and garden green waste burning (GWB) particulate matter (PM) is rarely achieved. The objective of this work was to evaluate the potential of non-targeted screening (NTS) analyses using HRMS (high resolution mass spectrometry) data to reveal discriminating potential molecular markers of both sources. Two residential wood combustion appliances (wood log stove and fireplace) were tested under different output conditions and wood moisture content. GWB experiments were carried out using two burning materials (fallen leaves and hedge trimming). PM samples were characterized using NTS approaches with both LC- and GC-HRMS (liquid and gas chromatography-HRMS). The analytical procedures were optimized to detect as many species as possible. Chemical fingerprints obtained were compared combining several multivariate statistical analyses (PCA, HCA and PLS-DA). Results showed a strong impact of the fuel nature and the combustion quality on the chemical fingerprints. 31 and 4 possible markers were discovered as characteristic of GWB and RWH, respectively. Complementary work was attempted to identify potential molecular formulas of the different potential marker candidates. The combination of HRMS NTS chemical characterization with multivariate statistical analyses shows promise for uncovering organic aerosol fingerprinting and discovering potential PM source markers.
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Affiliation(s)
- Camille Noblet
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France; Université Savoie Mont Blanc, CNRS, EDYTEM, Chambéry, 73000, France
| | - François Lestremau
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France; Hydrosciences Montpellier, Univ Montpellier, IMT Mines Alès, IRD, CNRS, 30100, Alès, France.
| | - Serge Collet
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France
| | - Claudine Chatellier
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France
| | - Jérôme Beaumont
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France
| | | | - Alexandre Albinet
- Institut National de l'Environnement industriel et des RISques (Ineris), 60550, Verneuil en Halatte, France.
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27
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Zhang J, Shrivastava M, Ma L, Jiang W, Anastasio C, Zhang Q, Zelenyuk A. Modeling Novel Aqueous Particle and Cloud Chemistry Processes of Biomass Burning Phenols and Their Potential to Form Secondary Organic Aerosols. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3776-3786. [PMID: 38346331 DOI: 10.1021/acs.est.3c07762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Phenols emitted from biomass burning contribute significantly to secondary organic aerosol (SOA) formation through the partitioning of semivolatile products formed from gas-phase chemistry and multiphase chemistry in aerosol liquid water and clouds. The aqueous-phase SOA (aqSOA) formed via hydroxyl radical (•OH), singlet molecular oxygen (1O2*), and triplet excited states of organic compounds (3C*), which oxidize dissolved phenols in the aqueous phase, might play a significant role in the evolution of organic aerosol (OA). However, a quantitative and predictive understanding of aqSOA has been challenging. Here, we develop a stand-alone box model to investigate the formation of SOA from gas-phase •OH chemistry and aqSOA formed by the dissolution of phenols followed by their aqueous-phase reactions with •OH, 1O2*, and 3C* in cloud droplets and aerosol liquid water. We investigate four phenolic compounds, i.e., phenol, guaiacol, syringol, and guaiacyl acetone (GA), which represent some of the key potential sources of aqSOA from biomass burning in clouds. For the same initial precursor organic gas that dissolves in aerosol/cloud liquid water and subsequently reacts with aqueous phase oxidants, we predict that the aqSOA formation potential (defined as aqSOA formed per unit dissolved organic gas concentration) of these phenols is higher than that of isoprene-epoxydiol (IEPOX), a well-known aqSOA precursor. Cloud droplets can dissolve a broader range of soluble phenols compared to aqueous aerosols, since the liquid water contents of aerosols are orders of magnitude smaller than cloud droplets. Our simulations suggest that highly soluble and reactive multifunctional phenols like GA would predominantly undergo cloud chemistry within cloud layers, while gas-phase chemistry is likely to be more important for less soluble phenols. But in the absence of clouds, the condensation of low-volatility products from gas-phase oxidation followed by their reversible partitioning to organic aerosols dominates SOA formation, while the SOA formed through aqueous aerosol chemistry increases with relative humidity (RH), approaching 40% of the sum of gas and aqueous aerosol chemistry at 95% RH for GA. Our model developments of biomass-burning phenols and their aqueous chemistry can be readily implemented in regional and global atmospheric chemistry models to investigate the aqueous aerosol and cloud chemistry of biomass-burning organic gases in the atmosphere.
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Affiliation(s)
- Jie Zhang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Manish Shrivastava
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Lan Ma
- Department of Land, Air and Water Resources, University of California, Davis, California 95616-8627, United States
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
| | - Wenqing Jiang
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
- Department of Environmental Toxicology, University of California, Davis, California 95616-5270, United States
| | - Cort Anastasio
- Department of Land, Air and Water Resources, University of California, Davis, California 95616-8627, United States
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
| | - Qi Zhang
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
- Department of Environmental Toxicology, University of California, Davis, California 95616-5270, United States
| | - Alla Zelenyuk
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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Ali A, Chhabra D, Kumari M, Manisha, Pinkey, Tiwari S, Sahdev RK. Optimization and characterization of hybrid bio-briquettes produced from the mixture of sawdust, sugarcane bagasse, and paddy straw. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15467-15490. [PMID: 38300490 DOI: 10.1007/s11356-024-32171-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 01/20/2024] [Indexed: 02/02/2024]
Abstract
Biomass briquetting is a viable densification technique that converts waste biomass materials into useful products and alternative energy. This work explores the characteristics and optimization of hybrid bio-briquette production by combining crop residues (paddy straw) and solid biomass materials (sawdust and sugarcane bagasse). A total number of 20 briquettes were fabricated with three input factors: sawdust (SD), sugarcane bagasse (SB), and paddy straw (PS) based on the faced-centered central composite design (FCCCD) approach in the laboratory to investigate the calorific value (CV) and ash content (AC). The bomb calorimeter technique was used to evaluate the briquette's calorific value and ash content. The proposed work focused on optimizing the briquette input parameters (SD, SB, and PS) and output responses (CV and AC) using analysis of variance (ANOVA) and response surface methodology (RSM) and hybrid artificial neural network-integrated with multi-objective genetic algorithms (ANN-MOGA). This study shows that the MOGA-ANN-based model results in the best value of CV (17.07 MJ/kg) and AC (1.95%) with optimal input parameters SD (39.99 g), SB (29.02 g), and PS (69.02 g). The optimal results observed from the MOGA-ANN model have also been validated experimentally. The Fourier transform infrared (FTIR) spectroscopy investigation reveals that biomass briquettes are the sustainable and environment-friendly option of fossil fuels for power generation and indoor cooking. The study suggests a strategy for minimizing agro-waste, which may be converted into future fuel in the form of briquettes.
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Affiliation(s)
- Arshad Ali
- Department of Mechanical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Deepak Chhabra
- Department of Mechanical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Meena Kumari
- Department of Electrical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Manisha
- Department of Electrical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Pinkey
- Department of Electrical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India
| | - Sumit Tiwari
- Department of Mechanical Engineering, Shiv Nadar Institution of Eminence Deemed to be University, Gautam Buddha Nagar, Dadri, UP, India
| | - Ravinder Kumar Sahdev
- Department of Mechanical Engineering, University Institute of Engineering and Technology, Maharshi Dayanand University, Rohtak, 124001, India.
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29
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Zhang C, Cai Y, Yao Q, Liu X, Song L, Li J, Deng S, Wang H, Wang B. Emission characteristics of carbonyl compounds from open burning of typical subtropical biomass in South China. CHEMOSPHERE 2024; 350:140979. [PMID: 38141673 DOI: 10.1016/j.chemosphere.2023.140979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/25/2023]
Abstract
Open biomass burning (OBB) is one of the largest primary emission sources for atmospheric carbonyl compounds, key precursors for ozone and secondary organic aerosol pollution. To clarify the carbonyl emissions, the comprehensive characteristics of C1-C10 carbonyl compounds from open burning of seven typical subtropical biomass in China were investigated in this study, which included subtropical plants and agricultural residues. Total 27 carbonyl compounds were detected. The total EFs were 2824 mg kg-1 with 95% confidence interval (CI) [2418, 3322] for burning subtropical plants and 4080 mg kg-1 with 95% CI [3446, 4724] for burning agriculture residues, respectively. The EFs were 2-3 orders of magnitude larger than previous values in China. Aliphatic aldehydes were the largest group of carbonyl groups, with acetaldehyde, as the most abundant carbonyl species (about 30% contribution). Formaldehyde, acetone, acrolein, glyoxal, methylglyoxal, butanone, isovaleraldehyde, and m-tolualdehyde were also found to be abundant and varying with the types of biomass burnt. Formaldehyde emission ratios to acetonitrile and CO were lower than those in previous studies both for burning plants and agricultural residues. There were significant variabilities in the emission ratios and factors among different types of OBBs. Strong positive correlations were found between carbonyl emissions and CO emissions and water content in biomass; furthermore, total carbonyl concentrations measured in the flaming stage were higher than those in the smoldering one. This study provides important fundamental measurement data on carbonyl emissions from burning typical subtropical plants and agricultural residues, which will help improve the quality of emission inventories and better understand the potential impacts of OBB on regional air quality in southern China.
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Affiliation(s)
- Chunlin Zhang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China
| | - Yiting Cai
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China
| | - Qian Yao
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, Guangdong, 510535, China
| | - Xiaoting Liu
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China; Department of Ophthalmology, The First Affiliated Hospital, Jinan University, Guangzhou, 510632, China
| | - Lin Song
- School of Environment, Jinan University, Guangzhou, 511443, China
| | - Jiangyong Li
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China
| | - Shuo Deng
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China
| | - Hao Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China.
| | - Boguang Wang
- Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong International Science and Technology Cooperation Base of Air Quality Science and Management, Guangzhou, 511443, China
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Zhang Y, Cao F, Song W, Jia XF, Xie T, Wu CL, Yan P, Yu M, Rauber M, Salazar G, Szidat S, Zhang Y. Fossil and Nonfossil Sources of Winter Organic Aerosols in the Regional Background Atmosphere of China. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1244-1254. [PMID: 38178789 DOI: 10.1021/acs.est.3c08491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Carbonaceous aerosols (CA) from anthropogenic emissions have been significantly reduced in urban China in recent years. However, the relative contributions of fossil and nonfossil sources to CA in rural and background regions of China remain unclear. In this study, the sources of different carbonaceous fractions in fine aerosols (PM2.5) from five background sites of the China Meteorological Administration Atmosphere Watch Network during the winter of 2019 and 2020 were quantified using radiocarbon (14C) and organic markers. The results showed that nonfossil sources contributed 44-69% to total carbon at these five background sites. Fossil fuel combustion was the predominant source of elemental carbon at all sites (73 ± 12%). Nonfossil sources dominated organic carbon (OC) in these background regions (61 ± 13%), with biomass burning or biogenic-derived secondary organic carbon (SOC) as the most important contributors. However, the relative fossil fuel source to OC in China (39 ± 13%) still exceeds those at other regional/background sites in Asia, Europe, and the USA. SOC dominated the fossil fuel-derived OC, highlighting the impact of regional transport from anthropogenic sources on background aerosol levels. It is therefore imperative to develop and implement aerosol reduction policies and technologies tailored to both the anthropogenic and biogenic emissions to mitigate the environmental and health risks of aerosol pollution across China.
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Affiliation(s)
- Yuxian Zhang
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Fujian Institute of Meteorological Sciences, Fuzhou 350028, China
| | - Fang Cao
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Wenhuai Song
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern 3012, Switzerland
| | - Xiao-Fang Jia
- Meteorological Observation Center, China Meteorological Administration, Beijing 100081, China
| | - Tian Xie
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Chang-Liu Wu
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Peng Yan
- Meteorological Observation Center, China Meteorological Administration, Beijing 100081, China
| | - Mingyuan Yu
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Martin Rauber
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern 3012, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland
| | - Gary Salazar
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern 3012, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland
| | - Sönke Szidat
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern 3012, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland
| | - Yanlin Zhang
- School of Ecology and Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
- Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044, China
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Al-Swadi HA, Al-Farraj AS, Al-Wabel MI, Ahmad M, Usman ARA, Ahmad J, Mousa MA, Rafique MI. Impacts of kaolinite enrichment on biochar and hydrochar characterization, stability, toxicity, and maize germination and growth. Sci Rep 2024; 14:1259. [PMID: 38218904 PMCID: PMC10787757 DOI: 10.1038/s41598-024-51786-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 01/09/2024] [Indexed: 01/15/2024] Open
Abstract
In this study, biochar (BC) and hydrochar (HC) composites were synthesized with natural kaolinite clay and their properties, stability, carbon (C) sequestration potential, polycyclic aromatic hydrocarbons (PAHs) toxicity, and impacts on maize germination and growth were explored. Conocarpus waste was pretreated with 0%, 10%, and 20% kaolinite and pyrolyzed to produce BCs (BC, BCK10, and BCK20, respectively), while hydrothermalized to produce HCs (HC, HCK10, and HCK20, respectively). The synthesized materials were characterized using X-ray diffraction, scanning electron microscope analyses, Fourier transform infrared, thermogravimetric analysis, surface area, proximate analyses, and chemical analysis to investigate the distinction in physiochemical and structural characteristics. The BCs showed higher C contents (85.73-92.50%) as compared to HCs (58.81-61.11%). The BCs demonstrated a higher thermal stability, aromaticity, and C sequestration potential than HCs. Kaolinite enriched-BCs showed the highest cation exchange capacity than pristine BC (34.97% higher in BCK10 and 38.04% higher in BCK20 than pristine BC), while surface area was the highest in kaolinite composited HCs (202.8% higher in HCK10 and 190.2% higher in HCK20 than pristine HC). The recalcitrance index (R50) speculated a higher recalcitrance for BC, BCK10, and BCK20 (R50 > 0.7), minimal degradability for HCK10 and HCK20 (0.5 < R50 < 0.7), and higher degradability for biomass and HC (R50 < 0.5). Overall, increasing the kaolinite enrichment percentage significantly enhanced the thermal stability and C sequestration potential of charred materials, which may be attributed to changes in the structural arrangements. The ∑ total PAHs concentration in the synthesized materials were below the USEPA's suggested limits, indicating their safe use as soil amendments. Germination indices reflected positive impacts of synthesized charred materials on maize germination and growth. Therefore, we propose that kaolinite-composited BCs and HCs could be considered as efficient and cost-effective soil amendments for improving plant growth.
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Affiliation(s)
- Hamed A Al-Swadi
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia.
| | - Abdullah S Al-Farraj
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Mohammad I Al-Wabel
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Munir Ahmad
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Adel R A Usman
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Jahangir Ahmad
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Mohammed Awad Mousa
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Muhammad Imran Rafique
- Soil Sciences Department, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, 11451, Riyadh, Kingdom of Saudi Arabia
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Valerian Corda J, Shenoy BS, Ahmad KA, Lewis L, K P, Rao A, Zuber M. Comparison of microparticle transport and deposition in nasal cavity of three different age groups. Inhal Toxicol 2024; 36:44-56. [PMID: 38343121 DOI: 10.1080/08958378.2024.2312801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 01/23/2024] [Indexed: 02/22/2024]
Abstract
Objective: The nasal cavity effectively captures the particles present in inhaled air, thereby preventing harmful and toxic pollutants from reaching the lungs. This filtering ability of the nasal cavity can be effectively utilized for targeted nasal drug delivery applications. This study aims to understand the particle deposition patterns in three age groups: neonate, infant, and adult.Materials and methods: The CT scans are built using MIMICS 21.0, followed by CATIA V6 to generate a patient-specific airway model. Fluid flow is simulated using ANSYS FLUENT 2021 R2. Spherical monodisperse microparticles ranging from 2 to 60 µm and a density of 1100 kg/m3 are simulated at steady-state and sedentary inspiration conditions.Results: The highest nasal valve depositions for the neonate are 25% for 20 µm, for infants, 10% for 50 µm, 15% for adults, and 15% for 15 µm. At mid nasal region, deposition of 15% for 20 µm is observed for infant and 8% for neonate and adult nasal cavities at a particle size of 10 and 20 µm, respectively. The highest particle deposition at the olfactory region is about 2.7% for the adult nasal cavity for 20 µm, and it is <1% for neonate and infant nasal cavities.Discussion and conclusions: The study of preferred nasal depositions during natural sedentary breathing conditions is utilized to determine the size that allows medication particles to be targeted to specific nose regions.
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Affiliation(s)
- John Valerian Corda
- Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - B Satish Shenoy
- Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Kamarul Arifin Ahmad
- Department of Aerospace Engineering, Universiti Putra Malaysia, Seri Kembangan, Malaysia
| | - Leslie Lewis
- Department of Paediatrics, Kasturba Medical College & Hospital, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Prakashini K
- Department of Radio Diagnosis, Kasturba Medical College & Hospital, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
| | - Anoop Rao
- Department of Pediatrics, Neonatology, Stanford University, Palo Alto, CA, USA
| | - Mohammad Zuber
- Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India
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Pardo M, Li C, Jabali A, Petrick LM, Ben-Ari Z, Rudich Y. Toxicity mechanisms of biomass burning aerosols in in vitro hepatic steatosis models. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166988. [PMID: 37704129 DOI: 10.1016/j.scitotenv.2023.166988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a common chronic liver disease that contributes to the global rise in liver-related morbidity and mortality. Wood tar (WT) aerosols are a significant fraction of carbonaceous aerosol originating from biomass smoldering, contributing to air pollution particles smaller than 2.5 mm (PM2.5). Mechanistic biological associations exist between exposure to PM2.5 and increased NAFLD phenotypes in both cell and animal models. Therefore, this study examines whether an existing NAFLD-like condition can enhance the biological susceptibility of liver cells exposed to air pollution in the form of WT material. Liver cells were incubated with lauric or oleic acid (LA, OA, respectively) for 24 h to accumulate lipids and served as an in vitro hepatic steatosis model. When exposed to 0.02 or 0.2 g/L water-soluble WT aerosols, both steatosis model cells showed increased cell death compared to the control cells (blank-treated cells with or without pre-incubation with LA or OA) or compared to WT-treated cells without pre-incubation with LA or OA. Furthermore, alterations in oxidative status included variations in reactive oxygen species (ROS) levels, elevated levels of lipid peroxidation adducts, and decreased expression of antioxidant genes associated with the NRF2 transcription factor. In addition, steatosis model cells exposed to WT had a higher degree of DNA damage than the control cells (blank-treated cells with or without pre-incubation with LA or OA). These results support a possible systemic effect through the direct inflammatory and oxidative stress response following exposure to water-soluble WT on liver cells, especially those predisposed to fatty liver. Furthermore, the liver steatosis model can be influenced by the type of fatty acid used; increased adverse effects of WT on metabolic dysregulation were observed in the LA model to a higher extent compared to the OA model.
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Affiliation(s)
- Michal Pardo
- Department of Earth and Planetary Sciences, Faculty of Chemistry, Weizmann Institute of Science, Rehovot, Israel.
| | - Chunlin Li
- Department of Earth and Planetary Sciences, Faculty of Chemistry, Weizmann Institute of Science, Rehovot, Israel.
| | - Amani Jabali
- Department of Earth and Planetary Sciences, Faculty of Chemistry, Weizmann Institute of Science, Rehovot, Israel.
| | - Lauren M Petrick
- The Bert Strassburger Metabolic Center, Sheba Medical Center, Tel Hashomer, Israel; Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Ziv Ben-Ari
- Liver Disease Center, Sheba Medical Center, Tel Hashomer, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Yinon Rudich
- Department of Earth and Planetary Sciences, Faculty of Chemistry, Weizmann Institute of Science, Rehovot, Israel.
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Wu B, Li J, Yao Z, Li X, Wang W, Wu Z, Zhou Q. Characteristics and reduction assessment of GHG emissions from crop residue open burning in China under the targets of carbon peak and carbon neutrality. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167235. [PMID: 37751839 DOI: 10.1016/j.scitotenv.2023.167235] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 09/28/2023]
Abstract
Driven by the goal of carbon peak and carbon neutrality, greenhouse gas (GHG) emissions from the crop residue open burning (CROB) in China cannot be ignored. In this study, we have established a high-resolution (0.05° × 0.05°) GHG emissions inventory (including CO2, CH4, and N2O) of CROB from 2012 to 2021 in China based on the VIIRS data and official statistics. To improve the results accuracy, we compared the two commonly used bases for grid allocation, fire counts (FC) and fire radiative power (FRP), in the construction of high-resolution inventory. In 2012, GHG emissions are overestimated by 599 t CO2e per grid on average in 24,577 grids, and underestimated by 1096 t CO2e per grid on average in 13,546 grids based on FC compared to FRP. Then, we characterized the spatial and temporal distribution of GHG emissions from CROB by using the FRP-based method. From 2012 to 2021, total GHG emissions from CROB in China have decreased by 31.2 %, of which the East and South-Central China contributed 22.51 and 9.12 Tg CO2e of GHG reductions, while the Northeast China contributed 10.73 Tg CO2e of GHG growth, respectively. In addition, GHG emissions from CROB on the time scale are mainly concentrated in April, June, and October, with variations between years and regions influenced by the policy, climate, and farmers' perceptions. Finally, we assessed the GHG emission reductions from CROB under different scenarios in the future. By 2060, GHG emissions would be significantly reduced by 57.3 %-77.9 % compared to 2021 under effective control measures. We believe the results will be of great significance for GHG policy formulation and emission reduction potential assessment.
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Affiliation(s)
- Bobo Wu
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China
| | - Jiahan Li
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Zhiliang Yao
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China.
| | - Xin Li
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China
| | - Weijun Wang
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Zichun Wu
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
| | - Qi Zhou
- School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China
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35
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Yang Y, Ma Z, Zhuang Y, Long X, Yu Y. Development of multi-generation lower respiratory tract model and insights into the transport and deposition characteristics of inhalable particles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166725. [PMID: 37657539 DOI: 10.1016/j.scitotenv.2023.166725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/03/2023]
Abstract
Airborne particles can spread quickly and enter human respiratory system via inhalation, causing chronic diseases, even cancer. Although recent studies have informed of toxicity of various pollutants, understanding the transport and deposition characteristics of particles in lower respiratory tract is still challenging. The current study proposes a novel model to simulate flow field change from the entrance of lower respiratory tract to pulmonary acinus, while studying particle transport and deposition characteristics. This model for lower respiratory tract with several bronchial extensions containing virtual pulmonary acinus is calculated using computational fluid dynamics and dynamics mesh. The results showed that in the first 10 generations of the lower respiratory tract, vortices and gravity interfered with particles' trajectory, affecting particle deposition distribution. For the first to the tenth-generation respiratory tract, coarse particles were deposited throughout almost the whole respiratory tract model. In contrast, ultrafine particles did not deposit in the higher-generation respiratory tract. The particle enrichment ability of various lobes was uneven with three particle deposition fraction variation patterns. Virtual pulmonary acinus influenced particle deposition and distribution because of vortex ring's trapped ability during expansion and contraction. This new attempt to build a virtual pulmonary acinus model to simulate particle deposition effects in human respiratory system may provide a reference for studying the toxicities of inhalable particles in the exposed human body.
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Affiliation(s)
- Yan Yang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China; Synergy Innovation Institute of GDUT, Shantou 515041, Guangdong, China
| | - Zijian Ma
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Yijie Zhuang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Xiaoao Long
- Neurosurgery Department, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Yingxin Yu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China; Synergy Innovation Institute of GDUT, Shantou 515041, Guangdong, China.
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36
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Liu P, Li X, Zhang C, Mu Y. It Is Time to Reduce Atmospheric Pollutant Emissions from Agricultural and Residential Activities in Rural China for the Sustainable Improvement of Air Quality. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:19102-19105. [PMID: 37993267 DOI: 10.1021/acs.est.3c08670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Affiliation(s)
- Pengfei Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuran Li
- Rural Energy and Environment Agency, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
| | - Chenglong Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yujing Mu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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37
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González-González RB, Martínez-Zamudio LY, Hernández JAR, González-Meza GM, Parra-Saldívar R, Iqbal HMN. Pharmaceutical pollution fingerprinting and waterbodies remediation using waste-derived carbon dots as sustainable advanced nanomaterials. ENVIRONMENTAL RESEARCH 2023; 238:117180. [PMID: 37739154 DOI: 10.1016/j.envres.2023.117180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/27/2023] [Accepted: 09/19/2023] [Indexed: 09/24/2023]
Abstract
The conversion of biomass waste into high-value nanomaterials such as carbon dots might represent a great advancement towards a circular economy system. Biomass wastes are an excellent choice as carbon precursors because of their wide availability, abundance, chemical composition, and eco-friendly nature. Moreover, their use as a raw material might decrease the total cost of the synthesis processes and reduce the environmental impacts. In addition, the complex composition of biomass leads to carbon dots with abundant functional groups, which in turn enhances water dispersibility and photoluminescence properties. In this manner, the effective transformation of biomass wastes into carbon dots reduces environmental pollution through the inadequate management of waste while producing carbon dots with enhanced performances. Therefore, this review describes biomass wastes as potential candidates for the synthesis of carbon dots through different synthesis methods. In addition, we have analyzed the great potential of biomass-derived carbon dots (CDs) for the degradation and detection of emerging pharmaceutical pollutants by promoting a circular economy approach. Finally, we identified current challenges to propose possible research directions for the large-scale and sustainable synthesis of high-quality biomass-derived CDs.
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Affiliation(s)
- Reyna Berenice González-González
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico
| | - Lidia Yaritza Martínez-Zamudio
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico
| | - Jesús Alfredo Rodríguez Hernández
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico
| | - Georgia María González-Meza
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey, 64849, Mexico.
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38
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Wei J, Li Z, Chen X, Li C, Sun Y, Wang J, Lyapustin A, Brasseur GP, Jiang M, Sun L, Wang T, Jung CH, Qiu B, Fang C, Liu X, Hao J, Wang Y, Zhan M, Song X, Liu Y. Separating Daily 1 km PM 2.5 Inorganic Chemical Composition in China since 2000 via Deep Learning Integrating Ground, Satellite, and Model Data. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:18282-18295. [PMID: 37114869 DOI: 10.1021/acs.est.3c00272] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Fine particulate matter (PM2.5) chemical composition has strong and diverse impacts on the planetary environment, climate, and health. These effects are still not well understood due to limited surface observations and uncertainties in chemical model simulations. We developed a four-dimensional spatiotemporal deep forest (4D-STDF) model to estimate daily PM2.5 chemical composition at a spatial resolution of 1 km in China since 2000 by integrating measurements of PM2.5 species from a high-density observation network, satellite PM2.5 retrievals, atmospheric reanalyses, and model simulations. Cross-validation results illustrate the reliability of sulfate (SO42-), nitrate (NO3-), ammonium (NH4+), and chloride (Cl-) estimates, with high coefficients of determination (CV-R2) with ground-based observations of 0.74, 0.75, 0.71, and 0.66, and average root-mean-square errors (RMSE) of 6.0, 6.6, 4.3, and 2.3 μg/m3, respectively. The three components of secondary inorganic aerosols (SIAs) account for 21% (SO42-), 20% (NO3-), and 14% (NH4+) of the total PM2.5 mass in eastern China; we observed significant reductions in the mass of inorganic components by 40-43% between 2013 and 2020, slowing down since 2018. Comparatively, the ratio of SIA to PM2.5 increased by 7% across eastern China except in Beijing and nearby areas, accelerating in recent years. SO42- has been the dominant SIA component in eastern China, although it was surpassed by NO3- in some areas, e.g., Beijing-Tianjin-Hebei region since 2016. SIA, accounting for nearly half (∼46%) of the PM2.5 mass, drove the explosive formation of winter haze episodes in the North China Plain. A sharp decline in SIA concentrations and an increase in SIA-to-PM2.5 ratios during the COVID-19 lockdown were also revealed, reflecting the enhanced atmospheric oxidation capacity and formation of secondary particles.
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Affiliation(s)
- Jing Wei
- Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland 20742, United States
| | - Zhanqing Li
- Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, Maryland 20742, United States
| | - Xi Chen
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Chi Li
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Yele Sun
- State Key Laboratory of Atmospheric Boundary Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - Jun Wang
- Department of Chemical and Biochemical Engineering, Iowa Technology Institute, University of Iowa, Iowa 52242, United States
| | - Alexei Lyapustin
- Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, United States
| | - Guy Pierre Brasseur
- Max Planck Institute for Meteorology, Hamburg 20146, Germany
- National Center for Atmospheric Research, Boulder, Colorado 80307, United States
| | - Mengjiao Jiang
- Max Planck Institute for Meteorology, Hamburg 20146, Germany
- School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
| | - Lin Sun
- College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
| | - Tao Wang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
| | - Chang Hoon Jung
- Department of Health Management, Kyungin Women's University, Incheon 21041, Korea
| | - Bing Qiu
- Civil Aviation Medical Center, Civil Aviation Administration of China, Beijing 100123, China
| | - Cuilan Fang
- Jiulongpo Center for Disease Control and Prevention, Chongqing 400039, China
| | - Xuhui Liu
- Taiyuan Center for Disease Control and Prevention, Taiyuan 030015, China
| | - Jinrui Hao
- Taiyuan Center for Disease Control and Prevention, Taiyuan 030015, China
| | - Yan Wang
- Harbin Center for Disease Control and Prevention, Harbin 150010, China
| | - Ming Zhan
- Pudong Center for Disease Control and Prevention, Shanghai 200120, China
| | | | - Yuewei Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong 510080, China
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39
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Déciga-Alcaraz A, Tlazolteotl Gómez de León C, Morales Montor J, Poblano-Bata J, Martínez-Domínguez YM, Palacios-Arreola MI, Amador-Muñoz O, Rodríguez-Ibarra C, Vázquez-Zapién GJ, Mata-Miranda MM, Sánchez-Pérez Y, Chirino YI. Effects of solvent extracted organic matter from outdoor air pollution on human type II pneumocytes: Molecular and proteomic analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122551. [PMID: 37714400 DOI: 10.1016/j.envpol.2023.122551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Outdoor air pollution is responsible for the exacerbation of respiratory diseases in humans. Particulate matter with an aerodynamic diameter ≤2.5 μm (PM2.5) is one of the main components of outdoor air pollution, and solvent extracted organic matter (SEOM) is adsorbed to the main PM2.5 core. Some of the biological effects of black carbon and polycyclic aromatic hydrocarbons, which are components of PM2.5, are known, but the response of respiratory cell lineages to SEOM exposure has not been described until now. The aim of this study was to obtain SEOM from PM2.5 and analyze the molecular and proteomic effects on human type II pneumocytes. PM2.5 was collected from Mexico City in the wildfire season and the SEOM was characterized to be exposed on human type II pneumocytes. The effects were compared with benzo [a] pyrene (B[a]P) and hydrogen peroxide (H2O2). The results showed that SEOM induced a decrease in surfactant and deregulation in the molecular protein and lipid pattern analyzed by reflection-Fourier transform infrared (ATR-FTIR) spectroscopy on human type II pneumocytes after 24 h. The molecular alterations induced by SEOM were not shared by those induced by B[a]P nor H2O2, which highlights specific SEOM effects. In addition, proteomic patterns by quantitative MS analysis revealed a downregulation of 171 proteins and upregulation of 134 proteins analyzed in the STRING database. The deregulation was associated with positive regulation of apoptotic clearance, removal of superoxide radicals, and positive regulation of heterotypic cell-cell adhesion processes, while ATP metabolism, nucleotide process, and cellular metabolism were also affected. Through this study, we conclude that SEOM extracted from PM2.5 exerts alterations in molecular patterns of protein and lipids, surfactant expression, and deregulation of metabolic pathways of type II pneumocytes after 24 h of exposure in absence of cytotoxicity, which warns about apparent SEOM silent effects.
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Affiliation(s)
- Alejandro Déciga-Alcaraz
- Laboratorio de Especiación Química de Aerosoles Orgánicos Atmosféricos, Instituto de Ciencias de La Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, CP, 04510, Ciudad de México, Mexico; Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de Los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz, CP, 54090, Estado de México, Mexico.
| | - Carmen Tlazolteotl Gómez de León
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70228, CP, 04510, Ciudad de México, Mexico.
| | - Jorge Morales Montor
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70228, CP, 04510, Ciudad de México, Mexico.
| | - Josefina Poblano-Bata
- Laboratorio de Especiación Química de Aerosoles Orgánicos Atmosféricos, Instituto de Ciencias de La Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, CP, 04510, Ciudad de México, Mexico.
| | - Yadira Margarita Martínez-Domínguez
- Laboratorio de Especiación Química de Aerosoles Orgánicos Atmosféricos, Instituto de Ciencias de La Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, CP, 04510, Ciudad de México, Mexico.
| | - M Isabel Palacios-Arreola
- Departamento de Investigación en Toxicología y Medicina Ambiental, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, CP, 14080, Ciudad de México, Mexico.
| | - Omar Amador-Muñoz
- Laboratorio de Especiación Química de Aerosoles Orgánicos Atmosféricos, Instituto de Ciencias de La Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, CP, 04510, Ciudad de México, Mexico.
| | - Carolina Rodríguez-Ibarra
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de Los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz, CP, 54090, Estado de México, Mexico.
| | - Gustavo J Vázquez-Zapién
- Laboratorio de Embriología, Escuela Militar de Medicina, Centro Militar de Ciencias de La Salud, Secretaría de La Defensa Nacional, Cerrada de Palomas S/N, Lomas de San Isidro, Alcaldía Miguel Hidalgo, C.P, 11200, Ciudad de México, Mexico.
| | - Mónica M Mata-Miranda
- Laboratorio de Biología Celular y Tisular, Escuela Militar de Medicina, Centro Militar de Ciencias de La Salud, Secretaría de La Defensa Nacional, Cerrada de Palomas S/N, Lomas de San Isidro, Alcaldía Miguel Hidalgo, C.P, 11200, Ciudad de México, Mexico.
| | - Yesennia Sánchez-Pérez
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología (INCan), Tlalpan, Ciudad de México, CP, 14080, Mexico.
| | - Yolanda I Chirino
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de Los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz, CP, 54090, Estado de México, Mexico.
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40
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Li S, Liu D, Wu Y, Hu K, Jiang X, Tian P, Sheng J, Pan B, Zhao D. Aging effects on residential biomass burning emissions under quasi-real atmospheric conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122615. [PMID: 37757938 DOI: 10.1016/j.envpol.2023.122615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/20/2023] [Accepted: 09/23/2023] [Indexed: 09/29/2023]
Abstract
Emissions from biomass burning (BB) vastly contribute to the atmospheric trace gases and particles, which affect air quality and human health. After emission, the chemical evolution changes the mass and composition of organic aerosol (OA) in the diluted and aged plume. In this study, we used a quasi-real atmospheric smog chamber system to conduct aging experiments and investigated the multiphase oxidation of primary organic aerosol (POA) and the formation of secondary organic aerosols (SOA) in residential biomass burning plumes. We found that the emissions in the gas and particle phases were interlinked during the plume evolution. During photochemical aging, more oxidized OA was produced, and SOA formation increased by a factor of 2 due to functionalization reactions of gaseous precursors such as furans, phenols, and carbonyls. On the other hand, dark aging resulted in a lower OA mass enhancement by a factor of 1.2, with weaker oxidation from gaseous reactions. Dark aging experiments resulted in the generation of substantial quantities of nitrogen-containing organic compounds in both gas and particulate phases, while photochemical aging led to a notable increase in the concentration of gaseous carboxylic acids. Our observations show that the properties of SOA are influenced by exposure to sunlight radiation and oxidants such as OH or NO3 radicals. These results reflect the aging process of BB plumes in real-world atmospheric conditions and highlight the importance of considering various aging mechanisms.
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Affiliation(s)
- Siyuan Li
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China
| | - Dantong Liu
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China.
| | - Yangzhou Wu
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China
| | - Kang Hu
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing, 210044, China
| | - Xiaotong Jiang
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China
| | - Ping Tian
- Beijing Weather Modification Office, Beijing, 100089, China
| | - Jiujiang Sheng
- Beijing Weather Modification Office, Beijing, 100089, China
| | - Baiwan Pan
- Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China
| | - Delong Zhao
- Beijing Weather Modification Office, Beijing, 100089, China
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Gregson FKA, Gerrebos NGA, Schervish M, Nikkho S, Schnitzler EG, Schwartz C, Carlsten C, Abbatt JPD, Kamal S, Shiraiwa M, Bertram AK. Phase Behavior and Viscosity in Biomass Burning Organic Aerosol and Climatic Impacts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14548-14557. [PMID: 37729583 DOI: 10.1021/acs.est.3c03231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Smoke particles generated by burning biomass consist mainly of organic aerosol termed biomass burning organic aerosol (BBOA). BBOA influences the climate by scattering and absorbing solar radiation or acting as nuclei for cloud formation. The viscosity and the phase behavior (i.e., the number and type of phases present in a particle) are properties of BBOA that are expected to impact several climate-relevant processes but remain highly uncertain. We studied the phase behavior of BBOA using fluorescence microscopy and showed that BBOA particles comprise two organic phases (a hydrophobic and a hydrophilic phase) across a wide range of atmospheric relative humidity (RH). We determined the viscosity of the two phases at room temperature using a photobleaching method and showed that the two phases possess different RH-dependent viscosities. The viscosity of the hydrophobic phase is largely independent of the RH from 0 to 95%. We use the Vogel-Fulcher-Tamman equation to extrapolate our results to colder and warmer temperatures, and based on the extrapolation, the hydrophobic phase is predicted to be glassy (viscosity >1012 Pa s) for temperatures less than 230 K and RHs below 95%, with possible implications for heterogeneous reaction kinetics and cloud formation in the atmosphere. Using a kinetic multilayer model (KM-GAP), we investigated the effect of two phases on the atmospheric lifetime of brown carbon within BBOA, which is a climate-warming agent. We showed that the presence of two phases can increase the lifetime of brown carbon in the planetary boundary layer and polar regions compared to previous modeling studies. Hence, the presence of two phases can lead to an increase in the predicted warming effect of BBOA on the climate.
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Affiliation(s)
- Florence K A Gregson
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Nealan G A Gerrebos
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Meredith Schervish
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Sepehr Nikkho
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Elijah G Schnitzler
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Carley Schwartz
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Christopher Carlsten
- Department of Medicine, Division of Respiratory Medicine, University of British Columbia, Vancouver, British Columbia V5Z 1M9, Canada
| | - Jonathan P D Abbatt
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Saeid Kamal
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Manabu Shiraiwa
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Allan K Bertram
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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42
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Zhang B, Shen Z, He K, Sun J, Huang S, Xu H, Li J, Ho SSH, Cao JJ. Insight into the Primary and Secondary Particle-Bound Methoxyphenols and Nitroaromatic Compound Emissions from Solid Fuel Combustion and the Updated Source Tracers. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:14280-14288. [PMID: 37706300 DOI: 10.1021/acs.est.3c04370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Methoxyphenols and nitroaromatic compounds (NACs) have strong atmospheric radiative forcing effects and adverse effects on human health. They are emitted from the incomplete combustion of solid fuels and are secondarily formed through photochemical reactions. Here, an on-site study was conducted to determine the primary emission and secondary formation of particulate phase products from a variety of solid fuels through a potential aerosol mass-oxidation flow reactor. Emission factors for total quantified methoxyphenols and NACs (i.e., EF∑Methoxyphenols and EF∑NACs) varied by 2 orders of magnitude among different fuels, which were greatly influenced by volatile matter, incomplete combustibility, flame intensity, and combustion temperature. Guaiacol and 4-nitro-2-vinylphenol were used as tracers for primary organic aerosol due to the low aged-to-fresh ratios (0.21-0.97), while 4-methyl-guaiacol, 4-ethyl-guaiacol, eugenol, 4-methyl-syringol, isoeugenol, acetovanillone, syringaldehyde, homovanillin acid, vanillin acid, and syringic acid were identified as secondary organic aerosol (SOA) (aged-to-fresh ratios between 1.90 and 4.20). During simulated aging, the -CHO group reacted with the hydroxyl radical (•OH) to form the -COOH group, but there was no correlation between syringol and 4-nitrosyringol, implying that •OH is the main reactant rather than the nitriate radical (•NO3) in the atmospheric aging processes of methoxyphenols. Aging caused substantially different emission profiles due to variable photochemical reaction properties. The fresh EFs for guaiacol emitted from the biomass burning ranged from 3.80 ± 0.44 to 26.2 ± 5.40 mg·kg-1, which were much higher than those in coal combustions (of 0.03 ± 0.01 to 1.42 ± 0.28 mg·kg-1). However, the aged EFs (EFaged) for guaiacol was 1.02 ± 0.06 to 1.61 ± 0.11 mg·kg-1 in most biomass combustions, which were comparable with those of the bituminous chunk (1.20 ± 0.16 mg·kg-1). Therefore, guaiacol, a traditional biomass marker, is not an ideal tracer for aged PM2.5 emitted from biomass burning. Indeed, the syringol/guaiacol and syringol/4-nitrosyringol ratios were found to be more suitable and efficient to be used in source characterization.
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Affiliation(s)
- Bin Zhang
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zhenxing Shen
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kun He
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian Sun
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shasha Huang
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongmei Xu
- Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jianjun Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710049, China
| | - Steven Sai Hang Ho
- Divison of Atmospheric Sciences, Desert Research Institute, Reno NV89512, United States
| | - Jun-Ji Cao
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710049, China
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43
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Matias P, Barrote I, Azinheira G, Continella A, Duarte A. Citrus Pruning in the Mediterranean Climate: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:3360. [PMID: 37836102 PMCID: PMC10574509 DOI: 10.3390/plants12193360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/16/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023]
Abstract
Pruning is a common practice in citrus for various reasons. These include controlling and shaping the canopy; improving phytosanitary health, productivity, and fruit quality; and facilitating operations such as harvesting and phytosanitary treatments. Because pruning is an expensive operation, its need is sometimes questioned. However, it has been proven to be particularly important in Mediterranean citriculture, which is oriented towards producing fruits for a high-quality demanding fresh market. Herein, we summarize and explain the pruning techniques used in Mediterranean citriculture and refer to the main purposes of each pruning type, considering citrus morphology and physiology.
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Affiliation(s)
- Pedro Matias
- Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal; (P.M.); (I.B.)
- MED—Mediterranean Institute for Agriculture, Environment and Development and CHANGE—Global Change and Sustainability Institute, Faculty of Sciences and Technology, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
| | - Isabel Barrote
- Faculdade de Ciências e Tecnologia, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal; (P.M.); (I.B.)
- Centre of Marine Sciences (CCMAR), Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
| | - Gonçalo Azinheira
- Instituto Superior de Engenharia, Campus da Penha, Universidade do Algarve, 8005-139 Faro, Portugal;
| | - Alberto Continella
- Department of Agriculture, Food and Environment, University of Catania, Via S. Sofia 100, 95131 Catania, Italy;
| | - Amílcar Duarte
- MED—Mediterranean Institute for Agriculture, Environment and Development and CHANGE—Global Change and Sustainability Institute, Faculty of Sciences and Technology, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
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Xu Y, Huang Z, Ye J, Zheng J. Hourly emissions of air pollutants and greenhouse gases from open biomass burning in China during 2016-2020. Sci Data 2023; 10:629. [PMID: 37717027 PMCID: PMC10505139 DOI: 10.1038/s41597-023-02541-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023] Open
Abstract
Open biomass burning (OBB) is a significant source of air pollutants and greenhouse gases that have contributed to air pollution episodes in China in recent years. An accurate emission inventory is critical for the precise control of OBB. Existing OBB emission datasets are commonly based on MODIS observations, and most only have a daily-scale temporal resolution. Daily OBB emissions, however, might not accurately represent diurnal variations, peak hours, or any open burning processes. The China Hourly Open Biomass Burning Emissions (CHOBE) dataset for mainland China from 2016 to 2020 was developed in this study using the spatiotemporal fusion of multiple active fires from MODIS, VIIRS S-NPP and Himawari-8 AHI detections. At a spatial resolution of 2 km, CHOBE provided gridded CO, NOx, SO2, NH3, VOCs, PM2.5, CO2, CH4 and N2O emissions from OBB. CHOBE will enhance insight into OBB spatiotemporal variability, improves air quality and climate modelling and forecasting, and aids in the formulation of precise OBB preventive and control measures.
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Affiliation(s)
- Yuanqian Xu
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Zhijiong Huang
- Institute for Environment and Climate Research, Jinan University, Guangzhou, 511443, China
| | - Jiashu Ye
- Sustainable Energy and Environment Thrust, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, 511453, China
| | - Junyu Zheng
- Sustainable Energy and Environment Thrust, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, 511453, China.
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45
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Vaezzadeh V, Zhong G, Gligorovski S, Wang Y, Zhang G. Characteristics of dissolved black carbon in riverine surface microlayer. MARINE POLLUTION BULLETIN 2023; 194:115301. [PMID: 37478787 DOI: 10.1016/j.marpolbul.2023.115301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Black carbon (BC) is produced by the incomplete combustion of biomass and fossil fuels. The dissolved form of BC (DBC), which is transported through rivers into the oceans, is of great significance for the carbon cycling on the planet due to its refractory features. However, the characteristics and sources of DBC in riverine water are poorly constrained. Here, we analyzed DBC contents and stable carbon isotope (δ13C) signatures in surface microlayer (SML) from the upper, middle and lower reaches of Pearl River (PR) in the first study of its kind. The DBC contents (100.9 to 166.6 μg L-1) in SML were lower than the global average for riverine water following a trend of upper > middle > lower reaches in PR. The molecular markers of DBC (BPCAs) and their δ13C values showed no statistical differences between the sampling sites (p > 0.05), suggesting biomass burning as the dominant source.
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Affiliation(s)
- Vahab Vaezzadeh
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China.
| | - Guangcai Zhong
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Sasho Gligorovski
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Yiqun Wang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Gan Zhang
- State Key Laboratory of Organic Geochemistry and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
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46
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Wang R, Cai W, Yu L, Li W, Zhu L, Cao B, Li J, Shen J, Zhang S, Nie Y, Wang C. A high spatial resolution dataset of China's biomass resource potential. Sci Data 2023; 10:384. [PMID: 37322090 PMCID: PMC10272228 DOI: 10.1038/s41597-023-02227-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/10/2023] [Indexed: 06/17/2023] Open
Abstract
Assessing biomass resource potential is essential for China's ambitious goals of carbon neutrality, rural revitalization, and poverty eradication. To fill the data gap of high spatial resolution biomass resources in China, this study estimates the biomass resource potential for all types of lignocellulosic biomass feedstock at 1 km resolution in 2018, including 9 types of agricultural residues, 11 types of forestry residues, and 5 types of energy crops. By combining the statistical accounting method and the GIS-based method, this study develops a transparent and comprehensive assessment framework, which is in accordance with the principle of food security, forest land and pasture protection, and biodiversity protection. In the end, we organize and store the data in different formats (GeoTIFF, NetCDF, and Excel) for GIS users, integrated modelers, and policymakers. The reliability of this high spatial resolution dataset has been proved by comparing the aggregated data at the subnational and national levels with the existing literature. This dataset has numerous potential uses and is a crucial input to many bioenergy-related studies.
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Affiliation(s)
- Rui Wang
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Wenjia Cai
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China.
| | - Le Yu
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Wei Li
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Lei Zhu
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Bowen Cao
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Jin Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), School of Environment, Tsinghua University, Beijing, 100084, China
| | - Jianxiang Shen
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Shihui Zhang
- Department of Earth System Science, Institute for Global Change Studies, Ministry of Education Ecological Field Station for East Asian Migratory Birds, Tsinghua University, Beijing, 100084, China
| | - Yaoyu Nie
- PBC School of Finance, Tsinghua University, Beijing, 100084, China
- Beijing E-Hualu Information Technology Co., Ltd, Beijing, 100043, China
| | - Can Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), School of Environment, Tsinghua University, Beijing, 100084, China
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Wang Y, Ju Q, Xing Z, Zhao J, Guo S, Li F, Du K. Observation of black carbon in Northern China in winter of 2018-2020 and its implications for black carbon mitigation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162897. [PMID: 36934935 DOI: 10.1016/j.scitotenv.2023.162897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 03/01/2023] [Accepted: 03/12/2023] [Indexed: 05/06/2023]
Abstract
Enhanced observations of BC in hotspot regions with a high temporal resolution are critical to refining our BC mitigation strategies, which are co-directed by air-quality and climate goals. In this work, the temporal variation and emission sources of BC in Shijiazhuang, Northern China, during the winter of 2018-2020 were investigated on the basis of multi-wavelength Aethalometer BC observations. The average BC concentrations decreased from 9.13 ± 6.63 μg/m3 in the winter of 2018 to 3.51 ± 2.48 μg/m3 in the winter of 2020. The BC source attributions derived from the Aethalometer model showed that the BC concentrations in Shijiazhuang in the winter of 2018 were mainly contributed by biomass burning (53 %). In contrast, during the winter of 2019 and 2020, fossil fuel combustion (BCff) exhibited higher contributions, and higher BC concentrations attributed to greater BCff contributions. Potential source contribution function (PSCF) analysis suggested that local emissions in Shijiazhuang and transport from highly industrialized regions like central Shanxi and southern Hebei contributed significantly to BC in Shijiazhuang. Concentration weighted trajectory (CWT) analysis revealed that the BC contributions from source regions decreased successively from the winter of 2018 to the winter of 2020. Our results also implied an air quality/climate co-benefit effect of enforcing multi-scale air-quality improvement regulations. Yet, it is still worth noting that some of the measures in favor of reducing BC emissions contradict the measures for reducing CO2. The synergies of BC to air quality and climate should be considered and addressed by policymakers with the aim of realizing a sustainable environment.
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Affiliation(s)
- Yang Wang
- School of Geographical Sciences, Hebei Normal University, Shijiazhuang, China; Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang, China; State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing, China
| | - Qiuge Ju
- School of Geographical Sciences, Hebei Normal University, Shijiazhuang, China
| | - Zhenyu Xing
- Department of Geography, University of Calgary, Calgary, Canada; Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Canada.
| | - Jiaming Zhao
- School of Geographical Sciences, Hebei Normal University, Shijiazhuang, China
| | - Song Guo
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing, China
| | - Fuxing Li
- School of Geographical Sciences, Hebei Normal University, Shijiazhuang, China; Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang, China
| | - Ke Du
- Department of Mechanical and Manufacturing Engineering, University of Calgary, Calgary, Canada.
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48
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Odo DB, Yang IA, Dey S, Hammer MS, van Donkelaar A, Martin RV, Dong GH, Yang BY, Hystad P, Knibbs LD. A cross-sectional analysis of ambient fine particulate matter (PM 2.5) exposure and haemoglobin levels in children aged under 5 years living in 36 countries. ENVIRONMENTAL RESEARCH 2023; 227:115734. [PMID: 36963710 DOI: 10.1016/j.envres.2023.115734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/23/2023] [Accepted: 03/20/2023] [Indexed: 05/08/2023]
Abstract
Low haemoglobin (Hb) concentrations and anaemia in children have adverse effects on development and functioning, some of which may have consequences in later life. Exposure to ambient air pollution is reported to be associated with anaemia, but there is little evidence specific to low- and middle-income countries (LMICs), where childhood anaemia prevalence is greatest. We aimed to determine if long-term ambient fine particulate matter (≤2.5 μm in aerodynamic diameter [PM2.5]) exposure was associated with Hb levels and the prevalence of anaemia in children aged <5 years living in 36 LMICs. We used Demographic and Health Survey data, collected between 2010 and 2019, which included blood Hb measurements. Satellite-derived estimates of annual average PM2.5 was the main exposure variable, which was linked to children's area of residence. Anaemia was defined according to standard World Health Organization guidelines (Hb < 11 g/dL). The association of PM2.5 with Hb levels and anaemia prevalence was examined using multivariable linear and logistic regression models, respectively. We examined whether the effects of ambient PM2.5 were modified by a child's sex and age, household wealth index, and urban/rural place of residence. Models were adjusted for relevant covariates, including other outdoor pollutants and household cooking fuel. The study included 154,443 children, of which 89,904 (58.2%) were anaemic. The country-level prevalence of anaemia ranged from 15.8% to 87.9%. Mean PM2.5 exposure was 33.0 (±21.6) μg/m3. The adjusted model showed that a 10 μg/m3 increase in annual PM2.5 concentration was associated with greater odds of anaemia (OR = 1.098 95% CI: 1.087, 1.109). The same increase in PM2.5 was associated with a decrease in average Hb levels of 0.075 g/dL (95% CI: 0.081, 0.068). There was evidence of effect modification by household wealth index and place of residence, with greater adverse effects in children from lower wealth quintiles and children in rural areas. Exposure to annual PM2.5 was cross-sectionally associated with decreased blood Hb levels, and greater risk of anaemia, in children aged <5 years living in 36 LMICs.
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Affiliation(s)
- Daniel B Odo
- School of Public Health, The University of Queensland, Herston, QLD 4006, Australia; College of Health Sciences, Arsi University, Asela, Ethiopia.
| | - Ian A Yang
- Thoracic Program, The Prince Charles Hospital, Metro North Hospital and Health Service, Brisbane, Australia; UQ Thoracic Research Centre, Faculty of Medicine, The University of Queensland, Brisbane, Australia
| | - Sagnik Dey
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India; Arun Duggal Centre of Excellence for Research in Climate Change and Air Pollution, Indian Institute of Technology Delhi, New Delhi, India
| | - Melanie S Hammer
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, United States
| | - Aaron van Donkelaar
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, United States
| | - Randall V Martin
- Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, MO, United States
| | - Guang-Hui Dong
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Bo-Yi Yang
- Guangdong Provincial Engineering Technology Research Center of Environmental Pollution and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Perry Hystad
- College of Public Health and Human Sciences, Oregon State University, USA
| | - Luke D Knibbs
- School of Public Health, The University of Sydney, Camperdown, NSW 2006, Australia; Public Health Research Analytics and Methods for Evidence, Public Health Unit, Sydney Local Health District, Camperdown, NSW, 2050, Australia
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49
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Pullabhotla HK, Zahid M, Heft-Neal S, Rathi V, Burke M. Global biomass fires and infant mortality. Proc Natl Acad Sci U S A 2023; 120:e2218210120. [PMID: 37253010 PMCID: PMC10266003 DOI: 10.1073/pnas.2218210120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 05/01/2023] [Indexed: 06/01/2023] Open
Abstract
Global outdoor biomass burning is a major contributor to air pollution, especially in low- and middle-income countries. Recent years have witnessed substantial changes in the extent of biomass burning, including large declines in Africa. However, direct evidence of the contribution of biomass burning to global health outcomes remains limited. Here, we use georeferenced data on more than 2 million births matched to satellite-derived burned area exposure to estimate the burden of biomass fires on infant mortality. We find that each additional square kilometer of burning is associated with nearly 2% higher infant mortality in nearby downwind locations. The share of infant deaths attributable to biomass fires has increased over time due to the rapid decline in other important causes of infant death. Applying our model estimates across harmonized district-level data covering 98% of global infant deaths, we find that exposure to outdoor biomass burning was associated with nearly 130,000 additional infant deaths per year globally over our 2004 to 2018 study period. Despite the observed decline in biomass burning in Africa, nearly 75% of global infant deaths due to burning still occur in Africa. While fully eliminating biomass burning is unlikely, we estimate that even achievable reductions-equivalent to the lowest observed annual burning in each location during our study period-could have avoided more than 70,000 infant deaths per year globally since 2004.
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Affiliation(s)
- Hemant K. Pullabhotla
- Center on Food Security and the Environment, Stanford University, Stanford, CA94305
- Department of Economics, Deakin University, Burwood, VIC3125, Australia
| | - Mustafa Zahid
- Center on Food Security and the Environment, Stanford University, Stanford, CA94305
| | - Sam Heft-Neal
- Center on Food Security and the Environment, Stanford University, Stanford, CA94305
| | - Vaibhav Rathi
- Department of Economics, Stockholm University, Stockholm106 91, Sweden
| | - Marshall Burke
- Center on Food Security and the Environment, Stanford University, Stanford, CA94305
- Doerr School of Sustainability, Stanford University, Stanford, CA94305
- National Bureau of Economic Research, Cambridge, MA02138
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50
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Tian G, Ma Y, Cui Y, Yang W, Shuai J, Yan Y. Association of cooking fuel use with risk of cancer and all-cause mortality among Chinese elderly people: a prospective cohort study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27873-7. [PMID: 37273059 DOI: 10.1007/s11356-023-27873-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/19/2023] [Indexed: 06/06/2023]
Abstract
When cooking with biomass and fossil fuels, their incomplete burning can lead to air pollution, which can trigger pernicious effects on people's health, especially among the elderly, who are more vulnerable to toxic and harmful environmental damage. This study explored the association between different cooking fuel types and the risk of cancer and all-cause mortality among seniors constructing Cox regression models. Data were obtained by linking waves of 6, 7, and 8 of the Chinese Longitudinal Healthy Longevity Survey, which included a total of 7269 participants who were 65 years old and over. Cooking fuels were categorized as either biomass, fossil, or clean fuels. And the effects of switching cooking fuels on death risk were also investigated using Cox regression models. The results indicate that, compared with the users of clean fuels, individuals using biomass or fossil fuels were at a greater death risk for cancer [HR (95% CI): biomass, 1.13 (1.05-1.20); fossil, 1.16 (1.06-1.25)] and all causes [HR (95% CI): biomass, 1.29 (1.16-1.42); fossil, 1.32 (1.22-1.50)]. Furthermore, compared with sustained users of biomass fuels, individuals converting from biomass to clean fuels significantly reduced death risk for cancer [HR (95% CI): 0.81 (0.72-0.95)] and all causes [HR (95% CI): 0.76 (0.64-0.93)]. Similarly, all-cause death risk [HR (95% CI): 0.77 (0.62-0.93)] was noticeably reduced among these participants converting from fossil to clean fuels than persistent users of fossil fuels. Subgroup analyses revealed that males had a greater cancer and all-cause death risk when exposed to unclean fuels. These findings can inform the development of policies and the implementation of measures related to cooking fuel use to promote the health of older people and reduce the burden of disease on society.
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Affiliation(s)
- Gang Tian
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China
| | - Yulan Ma
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China
| | - Yiran Cui
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China
| | - Wenyan Yang
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China
| | - Jingliang Shuai
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China
| | - Yan Yan
- Department of Epidemiology and Medical Statistics, Xiangya School of Public Health, Central South University, Kaifu District, Changsha, 410008, Hunan Province, China.
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