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Qi R, Jones DL, Tang Y, Gao F, Li J, Chi Y, Yan C. Regulatory path for soil microbial communities depends on the type and dose of microplastics. JOURNAL OF HAZARDOUS MATERIALS 2024; 473:134702. [PMID: 38788589 DOI: 10.1016/j.jhazmat.2024.134702] [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: 04/22/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
To reveal the feedbacks and regulating mechanisms of microplastic types and doses on microbial community, a microcosm experiment was carried out with two non-degradable microplastics [polyethylene (PE) and polyvinyl chloride (PVC)] and four biodegradable microplastics [poly(butylene succinate) (PBS), polyhydroxyalkanoates (PHA), poly(butyleneadipate-co-terephthalate) (PBAT), and polypropylene carbonate (PPC)] at different levels (1 %, 7 %, and 28 %). As a result, the content of total carbon (TC), soil organic carbon (SOC), and microbial biomass carbon (MBC) (expect MBC in PBS soil) increased with increasing doses of microplastics, and increased at the lowest PE dose rate. Biodegradable microplastics created a more active ecological niche while enriching more pathogens than non-degradable microplastics. Structural equation modeling indicated that microbial diversities were in a type-dependent assembly, whereas microbial compositions were more profoundly affected by the microplastic doses, ultimately. The standardized total effect coefficient of microplastic types on bacterial and fungal diversities was - 0.429 and - 0.282, and that of doses on bacterial and fungal compositions was 0.487 and 0.336, respectively. Both microplastic types and doses significantly impacted pH, electrical conductivity, total nitrogen, TC, SOC, and MBC, subsequently inhibiting microbial diversities and stimulating microbial compositions with particular pathways. The results provide a comprehensive understanding for evaluating the potential risk of microplastics.
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Affiliation(s)
- Ruimin Qi
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Davey L Jones
- School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Food Futures Institute, Murdoch University, Murdoch, WA 6150, Australia
| | - Yuanyuan Tang
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Fengxiang Gao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry CAS, Chinese Academy of Sciences, Changchun 130022, China
| | - Jiawei Li
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yihan Chi
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Changrong Yan
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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2
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Wu W, Xu Q, Li J, Wang Z, Li G. The spatio-temporal accumulation of 6 PPD-Q in greenbelt soils and its effects on soil microbial communities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 358:124477. [PMID: 38950845 DOI: 10.1016/j.envpol.2024.124477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/27/2024] [Accepted: 06/29/2024] [Indexed: 07/03/2024]
Abstract
6 PPD-Q (6 PPD-Quinone) is an ozone-induced byproduct derived from the degradation of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6 PPD), commonly found in road dust resulting from tire wear. However, the extent of 6 PPD-Q pollution in urban soil remains unclear. This study investigates the spatial and temporal accumulation patterns of 6 PPD-Q in greenbelt soils in Ningbo, and explores the correlation between 6 PPD-Q accumulation and soil microbial community composition and functions. Our findings indicate that 6 PPD-Q is present (ranging from 0.85 to 12.58 μg/kg) in soil samples collected from both sides of urban traffic arteries. Soil fungi exhibit higher sensitivity to 6 PPD-Q accumulation compared to bacteria, and associated fungi (Basidiomycota) may be potential biomarkers for environmental 6 PPD-Q contamination. Co-occurrence network analysis reveals that the bacterial microbial network in summer exhibits greater stability and resilience in response to 6 PPD-Q inputs than in winter. However, 6 PPD-Q accumulation disrupts the network structure of fungal communities to some extent, leading to reduced diversity in fungal microbial communities. Long-term accumulation of 6 PPD-Q weakens the nitrogen and phosphorus cycling potential within urban soil, while the enhancement of carbon cycling may further promote 6 PPD-Q degradation in urban soil. Taken together, this study provides new insights into the ecological risks of 6 PPD-Q in urban soils.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo, 315830, PR China; School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, PR China
| | - Qiao Xu
- Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo, 315830, PR China.
| | - Jinhu Li
- Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo, 315830, PR China
| | - Zhen Wang
- School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, PR China
| | - Gang Li
- Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, PR China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo, 315830, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
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3
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Li N, Wang X, Li X, Yi S, Guo Y, Wu N, Lin H, Zhong B, Wu WM, He Y. Anthropogenic and biological activities elevate microplastics pollution in headwater ecosystem of Yangtze tributaries in Hindu Kush-Himalayan region. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134395. [PMID: 38663293 DOI: 10.1016/j.jhazmat.2024.134395] [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: 04/17/2024] [Accepted: 04/22/2024] [Indexed: 05/12/2024]
Abstract
Microplastic (MP) pollution is widely spread in oceans, freshwater, and terrestrial environments but MPs in mountainous headwater ecosystem are rarely reported. This study focuses on the headwater of Yangtze tributaries of the Hindu Kush-Himalayan (HKH) region. Five streams at elevations of 900 to 3300 m were selected to investigate the distribution of MPs in water and sediments across altitudes. MPs were found in all water and sediment samples from top stream zone nearly in absence of anthropogenic activity, low anthropogenic zone, and high anthropogenic zone, increased from 12-54, 81-185 to 334-847 items/L, and 2-35, 26-84 to 124-428 items/kg, respectively. This elevation-dependent MP distribution indicated that as elevation decreased, anthropogenic activities intensified and increased MPs input and their abundance, size, and diversity. Notably, hydraulic projects, such as damming, were identified as potential barriers to the migration of MPs downstream. Microbiome analyses revealed the presence of bacterial genes associated with plastic biodegradation in all sediment samples. The study indicates that Shangri-la mountainous streams have been polluted with MPs for years with potential risk of generation of nano-sized particles via natural fragmentation and biodegradation, and thus raises concern on MPs pollution in headwaters streams in mountainous regions.
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Affiliation(s)
- Naying Li
- CAS Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; School of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Xiaofeng Wang
- School of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China
| | - Xianxiang Li
- School of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China
| | - Shaoliang Yi
- International Centre for Integrated Mountain Development, GPO Box, Kathmandu 3226, Nepal
| | - Yun Guo
- CAS Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Ning Wu
- CAS Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; International Centre for Integrated Mountain Development, GPO Box, Kathmandu 3226, Nepal
| | - Honghui Lin
- School of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Bo Zhong
- CAS Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Wei-Min Wu
- Department of Civil and Environmental Engineering, William & Cloy Codiga Resource Recovery Research Center, Center for Sustainable Development & Global Competitiveness, Stanford University, Stanford, California 94305-4020, United States.
| | - Yixin He
- CAS Key Laboratory of Mountain Ecological Restoration and Bio-resources Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
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4
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Barceló D. Microplastics in the environment: analytical chemistry methods, sorption materials, risks and sustainable solutions. Anal Bioanal Chem 2024; 416:3479-3485. [PMID: 38717624 DOI: 10.1007/s00216-024-05319-4] [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: 04/05/2024] [Accepted: 04/26/2024] [Indexed: 06/07/2024]
Abstract
This Feature Article reports general and more specific aspects about microplastic (MP) contamination in continental and marine waters as well as in terrestrial environment. It describes a critical vision of the analytical methods commonly used for MP characterization and determination, including recommendations on green analytical chemistry (GAC) protocols. Insights into MPs as sorption materials and carriers for a variety of emerging contaminants like pharmaceuticals and pesticides are highlighted. Risks to biota living in aquatic and terrestrial environments and human-health-related effects with specific examples of surface and groundwater used for drinking water sources near contaminated sites like landfills are summarized. Lastly, sustainable solutions for how to improve the analysis and comparison of MP detection at the global level is given, including the need for standardized analytical protocols as well as the performance of additional interlaboratory exercises. Additional recommendations include a global database on MP levels made available to all authors to better compare their data qualitatively with that previously published. Policy and remediation actions on how to reduce and mitigate MP pollution may include different types of actions like an improved waste management and reuse system, the development of bioplastics and new plastic materials, as well as legally binding additional funding to cope with increasing plastic pollution at the global scale.
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Affiliation(s)
- Damià Barceló
- Institute of Environmental Assessment and Water Research, IDAEA-CSIC, C/ Jordi Girona 18-26, 08034, Barcelona, Spain.
- Chemistry and Physics Department, University of Almeria, 04120, Almería, Spain.
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5
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Miller C, Neidhart A, Hess K, Ali AMS, Benavidez A, Spilde M, Peterson E, Brearley A, Wang X, Dhanapala BD, Cerrato JM, Gonzalez-Estrella J, El Hayek E. Uranium accumulation in environmentally relevant microplastics and agricultural soil at acidic and circumneutral pH. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171834. [PMID: 38521258 PMCID: PMC11141427 DOI: 10.1016/j.scitotenv.2024.171834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
The co-occurrence of microplastics (MPs) with potentially toxic metals in the environment stresses the need to address their physicochemical interactions and the potential ecological and human health implications. Here, we investigated the reaction of aqueous U with agricultural soil and high-density polyethylene (HDPE) through the integration of batch experiments, microscopy, and spectroscopy. The aqueous initial concentration of U (100 μM) decreased between 98.6 and 99.2 % at pH 5 and between 86.2 and 98.9 % at pH 7.5 following the first half hour of reaction with 10 g of soil. In similar experimental conditions but with added HDPE, aqueous U decreased between 98.6 and 99.7 % at pH 5 and between 76.1 and 95.2 % at pH 7.5, suggesting that HDPE modified the accumulation of U in soil as a function of pH. Uranium-bearing precipitates on the cracked surface of HDPE were identified by SEM/EDS after two weeks of agitation in water at both pH 5 and 7.5. Accumulation of U on the near-surface region of reacted HDPE was confirmed by XPS. Our findings suggest that the precipitation of U was facilitated by the weathering of the surface of HDPE. These results provide insights about surface-mediated reactions of aqueous metals with MPs, contributing relevant information about the mobility of metals and MPs at co-contaminated agricultural sites.
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Affiliation(s)
- Casey Miller
- Gerald May Department of Civil, Construction & Environmental Engineering, MSC01 1070, University of New Mexico, Albuquerque, NM 87131, USA; Department of Pharmaceutical Sciences, MSC09 5360, University of New Mexico, College of Pharmacy, Albuquerque, NM 87131, USA
| | - Andrew Neidhart
- Department of Pharmaceutical Sciences, MSC09 5360, University of New Mexico, College of Pharmacy, Albuquerque, NM 87131, USA; Department of Chemistry and Chemical Biology, MSC03 2060, University of New Mexico, Albuquerque, NM 87131, USA
| | - Kendra Hess
- School of Civil and Environmental Engineering, EN0059, Oklahoma State University, Stillwater, OK 740784, USA
| | - Abdul-Mehdi S Ali
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, NM 87131, USA
| | - Angelica Benavidez
- Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM, USA
| | - Michael Spilde
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, NM 87131, USA
| | - Eric Peterson
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, NM 87131, USA
| | - Adrian Brearley
- Department of Earth and Planetary Sciences, MSC03 2040, University of New Mexico, Albuquerque, NM 87131, USA
| | - Xuewen Wang
- School of Civil and Environmental Engineering, EN0059, Oklahoma State University, Stillwater, OK 740784, USA
| | - B Dulani Dhanapala
- College of Engineering, Architecture, and Technology, Oklahoma State University, Stillwater, OK 740784, USA
| | - José M Cerrato
- Gerald May Department of Civil, Construction & Environmental Engineering, MSC01 1070, University of New Mexico, Albuquerque, NM 87131, USA
| | - Jorge Gonzalez-Estrella
- School of Civil and Environmental Engineering, EN0059, Oklahoma State University, Stillwater, OK 740784, USA
| | - Eliane El Hayek
- Department of Pharmaceutical Sciences, MSC09 5360, University of New Mexico, College of Pharmacy, Albuquerque, NM 87131, USA.
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6
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Li Y, Xu G, Yu Y. Freeze-thaw aged polyethylene and polypropylene microplastics alter enzyme activity and microbial community composition in soil. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134249. [PMID: 38603909 DOI: 10.1016/j.jhazmat.2024.134249] [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: 02/08/2024] [Revised: 03/26/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
In cold regions, microplastics (MPs) in the soil undergo freeze-thaw (FT) aging process. Little is known about how FT aged MPs influence soil physico-chemical properties and microbial communities. Here, two environmentally relevant concentrations (50 and 500 mg/kg) of 50 and 500 µm polyethylene (PE) and polypropylene (PP) MPs treated soils were subjected to 45-day FT cycles (FTCs). Results showed that MPs experienced surface morphology, hydrophobicity and crystallinity alterations after FTCs. After 45-day FTCs, the soil urease (SUE) activity in control (MPs-free group that underwent FTCs) was 33.49 U/g. SUE activity in 50 µm PE group was reduced by 19.66 %, while increased by 21.16 % and 37.73 % in 500 µm PE and PP groups compared to control. The highest Shannon index was found in 50 µm PP-MPs group at 50 mg/kg, 2.26 % higher than control (7.09). Compared to control (average weighted degree=8.024), all aged MPs increased the complexity of network (0.19-1.43 %). Bacterial biomarkers of aged PP-MPs were associated with pollutant degradation. Aged PP-MPs affected genetic information, cellular processes, and disrupted the biosynthesis of metabolites. This study provides new insights into the potential hazards of MPs after FTCs on soil ecosystem in cold regions.
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Affiliation(s)
- Yanjun Li
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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7
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Hou J, Wang L, Wang J, Chen L, Han B, Li Y, Yu L, Liu W. A comprehensive evaluation of influencing factors of neonicotinoid insecticides (NEOs) in farmland soils across China: First focus on film mulching. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134284. [PMID: 38615648 DOI: 10.1016/j.jhazmat.2024.134284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024]
Abstract
Neonicotinoid insecticide (NEO) residues in agricultural soils have concerning and adverse effects on agroecosystems. Previous studies on the effects of farmland type on NEOs are limited to comparing greenhouses with open fields. On the other hand, both NEOs and microplastics (MPs) are commonly found in agricultural fields, but their co-occurrence characteristics under realistic fields have not been reported. This study grouped farmlands into three types according to the covering degree of the film, collected 391 soil samples in mainland China, and found significant differences in NEO residues in the soils of the three different farmlands, with greenhouse having the highest NEO residue, followed by farmland with film mulching and farmland without film mulching (both open fields). Furthermore, this study found that MPs were significantly and positively correlated with NEOs. As far as we know this is the first report to disclose the association of film mulching and MPs with NEOs under realistic fields. Moreover, multiple linear regression and random forest models were used to comprehensively evaluate the factors influencing NEOs (including climatic, soil, and agricultural indicators). The results indicated that the random forest model was more reliable, with MPs, farmland type, and total nitrogen having higher relative contributions.
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Affiliation(s)
- Jie Hou
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - LiXi Wang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - JinZe Wang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - LiYuan Chen
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China; Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China.
| | - BingJun Han
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - YuJun Li
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Lu Yu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - WenXin Liu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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8
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Ye Q, Wu Y, Liu W, Ma X, He D, Wang Y, Li J, Wu W. Identification and quantification of nanoplastics in different crops using pyrolysis gas chromatography-mass spectrometry. CHEMOSPHERE 2024; 354:141689. [PMID: 38492677 DOI: 10.1016/j.chemosphere.2024.141689] [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: 01/15/2024] [Revised: 02/20/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024]
Abstract
Quantitative studies of nanoplastics (NPs) abundance on agricultural crops are crucial for understanding the environmental impact and potential health risks of NPs. However, the actual extent of NP contamination in different crops remains unclear, and therefore insufficient quantitative data are available for adequate exposure assessments. Herein, a method with nitric acid digestion, multiple organic extraction combined with pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) quantification was used to determine the chemical composition and mass concentration of NPs in different crops (cowpea, flowering cabbage, rutabagas, and chieh-qua). Recoveries of 74.2-109.3% were obtained for different NPs in standard products (N = 6, RSD <9.6%). The limit of detection (LOD) and the limit of quantitation (LOQ) were 0.02-0.5 μg and 0.06-1.5 μg, respectively. The detection method for NPs exhibited good external calibration curves and linearity with 0.99. The results showed that poly (vinylchloride) (PVC), poly (ethylene terephthalate) (PET), polyethylene (PE), and polyadiohexylenediamine (PA66) NPs could be detected in crop samples, although the accumulation levels associated with the various crops varied significantly. PVC (N.D.-954.3 mg kg-1, dry weight (DW)) and PE (101.3-462.9 mg kg-1, DW) NPs were the dominant components in the samples of all four crop species, while high levels of PET (414.3-1430.1 mg kg-1, DW) NPs were detected in cowpea samples. Furthermore, there were notable differences in the accumulation levels of various edible crop parts, such as stems (60.2%) > leaves (39.8%) in flowering cabbage samples and peas (58.8%) > pods (41.2%) in cowpea samples. This study revealed the actual extent of NP contamination in different types of crops and provided crucial reference data for future research.
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Affiliation(s)
- Quanyun Ye
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Yingxin Wu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China.
| | - Wangrong Liu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Xiaorui Ma
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Dechun He
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Yuntao Wang
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Junfei Li
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China
| | - Wencheng Wu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China; Guangdong Engineering & Technology Research Center for System Control of Livestock and Poultry Breeding Pollution, Guangzhou, 510655, China.
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9
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Zhang F, Yang X, Zhang Z. Effects of soil properties and land use patterns on the distribution of microplastics: A case study in southwest China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120598. [PMID: 38490007 DOI: 10.1016/j.jenvman.2024.120598] [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: 11/28/2023] [Revised: 02/09/2024] [Accepted: 03/10/2024] [Indexed: 03/17/2024]
Abstract
Microplastic pollution in the soil environment is of great concern. However, the current research on microplastics (MPs) in Southwest China mainly focuses on their distribution characteristics and sources in soil, making the understanding of the soil properties and land use patterns influencing soil MPs insufficient. In this study, the abundance and distribution characteristics of MPs in the soil of different land use patterns in Guizhou Province were determined. The results revealed that the average abundance of MPs in soils was 2936 items/kg, ranging from 780 to 9420 items/kg. The MPs were mainly small particle size (0-0.5 mm), granular, and black, accounting for 87.5%, 36.6%, and 82.2%, respectively. The most common polymer types of MPs were polypropylene, polyethylene terephthalate, and polyethylene, which accounted for 20.4%, 16.8%, and 16.4%, respectively. As soil bulk density increased, microplastic abundance and small particle size decreased. Soil microplastic abundance slightly decreased with increasing soil porosity. The abundance of MPs increased with the increase in soil pH, but no significant correlation was observed between soil organic matter content and microplastic abundance. pH was the major factor that affected the microplastic distribution, which accounted for 32.5%. This study provides insight into the distribution and influencing factors of soil MPs and also provides a theoretical basis for subsequent research on soil microplastic pollution.
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Affiliation(s)
- Fudong Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Xiuyuan Yang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Zhenming Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, China.
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10
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Chen L, Yu L, Han B, Li Y, Zhang J, Tao S, Liu W. Pollution characteristics and affecting factors of phthalate esters in agricultural soils in mainland China. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133625. [PMID: 38295727 DOI: 10.1016/j.jhazmat.2024.133625] [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: 11/22/2023] [Revised: 01/15/2024] [Accepted: 01/24/2024] [Indexed: 02/15/2024]
Abstract
Phthalate esters (PAEs), the most commonly produced and used plasticizers, are widely used in plastic products and agroecosystems, posing risks to agricultural products and human health. However, current research on PAE pollution characteristics in agricultural soils in China is not comprehensive; affecting factors and relationships with microplastics and plasticizer organophosphate esters have not been sufficiently considered. In this study, farmland soil samples were collected with field questionnaires on a national scale across mainland China. The results showed that the detection rate of PAEs was 100% and the Σ16PAEs concentrations were 23.5 - 903 μg/kg. The level of PAEs was highest in the greenhouse, and significantly higher than that in mulched farmland (p < 0.05). The PAE concentration in northwestern China was the lowest among different physical geographic zones. PAEs in farmlands posed a low cancer risk to Chinese people. PAE pollution in farmlands was significantly (p < 0.05) affected by agronomic measures (such as disposal method), environmental factors, and socioeconomic factors. Overall, PAEs were significantly and positively correlated (p < 0.05) with organophosphate esters but not with microplastics. This study aims to provide scientific data for relevant prevention and control policies, as well as actionable recommendations for pollution reduction.
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Affiliation(s)
- LiYuan Chen
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China; Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Lu Yu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - BingJun Han
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - YuJun Li
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - JiaoDi Zhang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Shu Tao
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - WenXin Liu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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11
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Bai R, Liu H, Cui J, Wu Y, Guo X, Liu Q, Liu Q, Gao H, Yan C, He W. The characteristics and influencing factors of farmland soil microplastic in Hetao Irrigation District, China. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133472. [PMID: 38219587 DOI: 10.1016/j.jhazmat.2024.133472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/16/2024]
Abstract
Microplastic pollution, a major global concern, has garnered increasing attention in agricultural ecosystem research. China's Hetao Irrigation District, vital for grain production in the Yellow River Basin, lacks sufficient research on microplastic pollution of agricultural soils. This study, based on a detailed background investigation and testing of 47 samples, is the first to elucidate the characteristics and potential influencing factors of microplastics in the Hetao Irrigation District. The abundance of microplastics in the farmland soil ranged from 1810 to 86331 items/kg, with 90% measuring below 180 µm and mainly in film and fragment forms. Predominant polymers were polyethylene (PE, 43.0%) and polyamide (PA, 27.8%). Key pollution influencers were identified as agricultural inputs, with low-density polyethylene (LDPE) being the most extensively used plastic type. The carbonyl index and hydroxyl indices of the detected LDPE microplastics ranged from 0.041 to 0.96 and 0.092 to 1.20, respectively. The study highlights the significance of mulching management and agronomic practices in shaping microplastic characteristics. Potential pollution sources include agricultural inputs, irrigation equipment, domestic waste, and tire wear. Proposed effective strategies include responsible plastic use, robust waste management, and irrigation system upgrades, establishing a foundation for future ecological risk assessments and effective management approaches in the Hetao Irrigation District. ENVIRONMENTAL IMPLICATION: The harmful substances studied in this paper are microplastics, which are widely distributed in the environment and have potential ecological risks. This study is the first to investigate the characteristics of microplastics in farmland soil within the Hetao Irrigation Area, a region that is of critical importance to agricultural production in the Yellow River Basin of China. The study provides comprehensive insights into the factors influencing the characteristics of microplastics and speculates on their sources. These findings offer a novel perspective on the assessment of microplastic contamination in the area and provide valuable recommendations for prevention and control measures.
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Affiliation(s)
- Runhao Bai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hongjin Liu
- Inner Mongolia Autonomous Region Agriculture Ecology and Resource Protection Center, Huhhot 010011, China
| | - Jixiao Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, China.
| | - Yan Wu
- Inner Mongolia Autonomous Region Agriculture Ecology and Resource Protection Center, Huhhot 010011, China
| | - Xiaoyu Guo
- Inner Mongolia Autonomous Region Agriculture Ecology and Resource Protection Center, Huhhot 010011, China
| | - Qin Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Qi Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Haihe Gao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changrong Yan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Wenqing He
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Western Agricultural, Chinese Academy of Agricultural Sciences, Changji 831100, China.
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12
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Li Z, Song Z, Qiu L, Cao Y, Gu H, Wang Z, Liu X, Qian X. Quantitative distribution and quantized ecological threat of microplastics in farmland: Shanghai as an example. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133069. [PMID: 38056264 DOI: 10.1016/j.jhazmat.2023.133069] [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: 09/23/2023] [Revised: 11/08/2023] [Accepted: 11/21/2023] [Indexed: 12/08/2023]
Abstract
The occurrence of microplastics (MPs) in farmlands poses a threat to soil health and crop yield. There needs to be more research on the role of cropping patterns in the accumulation of MPs and quantizing the threat of MPs on soil health and crop yield. In this study, a field study was carried out to explore the role of cropping patterns in the accumulation of MPs in agricultural soil in Shanghai, China. Furthermore, the specific effect and importance of MPs and each soil physicochemical indicator to soil health and crop yield were clarified, and the threat of MPs in reducing soil health and crop yield was quantized. Relative lower MPs abundance was detected in Shanghai. MPs abundance in vegetable fields was significantly higher than that in orchards. The broad source of MPs, the acceleration of plastics breaking under artificial disturbance and warmer temperatures, and the block of MPs exchange could account for the quicker accumulation of MPs in vegetable fields. MPs have a negligible effect on microbial diversity and metabolic activity which plays a role in soil enzyme activity. Besides, MPs served as one of the critical factors for rice yield reduction.
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Affiliation(s)
- Zhengwen Li
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
| | - Zhaofeng Song
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
| | - Linlin Qiu
- School of Resources·&·Environmental-Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yan Cao
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
| | - Hairong Gu
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
| | - Zhenqi Wang
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China
| | - Xiang Liu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Xiaoyong Qian
- Shanghai Academy of Environmental Sciences, Shanghai, 200233, China.
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13
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Chen Z, Dou S, Zhao C, Xiao L, Lu Z, Qiu Y. Machine learning-assisted assessment of key meteorological and crop factors affecting historical mulch pollution in China. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133281. [PMID: 38134688 DOI: 10.1016/j.jhazmat.2023.133281] [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: 10/17/2023] [Revised: 11/28/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
Degraded mulch pollution is of a great concern for agricultural soils. Although numerous studies have examined this issue from an environmental perspective, there is a lack of research focusing on crop-specific factors such as crop type. This study aimed to explore the correlation between meteorological and crop factors and mulch contamination. The first step was to estimate the amounts of mulch-derived microplastics (MPs) and phthalic acid esters (PAEs) during the rapid expansion period (1993-2012) of mulch usage in China. Subsequently, the Elastic Net (EN) and Random Forest (RF) models were employed to process a dataset that included meteorological, crop, and estimation data. At the national level, the RF model suggested that coldness in fall was crucial for MPs generation, while vegetables acted as a key factor for PAEs release. On a regional scale, the EN results showed that crops like vegetables, cotton, and peanuts remained significantly involved in PAEs contamination. As for MPs generation, coldness prevailed over all regions. Aridity became more critical for southern regions compared to northern regions due to solar radiation. Lastly, each region possessed specific crop types that could potentially influence its MPs contamination levels and provide guidance for developing sustainable ways to manage mulch contamination.
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Affiliation(s)
- Zheng Chen
- Department of Environmental Science, College of Environmental Science and Engineering, Tongji University, China
| | - Shuguang Dou
- Department of Computer Science, College of Electronic and Information Engineering, Tongji University, China
| | - Cairong Zhao
- Department of Computer Science, College of Electronic and Information Engineering, Tongji University, China
| | - Liwen Xiao
- Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, Dublin 2, Ireland
| | - Zhibo Lu
- Department of Environmental Science, College of Environmental Science and Engineering, Tongji University, China
| | - Yuping Qiu
- Department of Environmental Science, College of Environmental Science and Engineering, Tongji University, China.
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14
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Liu Y, Huang W, Wang Y, Wen Q, Zhou J, Wu S, Liu H, Chen G, Qiu R. Effects of naturally aged microplastics on the distribution and bioavailability of arsenic in soil aggregates and its accumulation in lettuce. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169964. [PMID: 38211862 DOI: 10.1016/j.scitotenv.2024.169964] [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: 11/24/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
Naturally aged microplastics (NAMPs) and arsenic (As) have been reported to coexist in and threaten potentially to soil-plant ecosystem. The research explored the combined toxic effects of NAMPs and As to lettuce (Lactuca sativa L.) growth, and the distribution, accumulation and bioavailability of As in soil aggregates. The As contaminated soil with low, medium and high concentrations (L-As, M-As, H-As) were treated with or without NAMPs, and a total of six treatments. The results displayed that, in comparison to separate treatments of L-As and M-As, the presence of NAMPs increased the total biomass of lettuce grown at these two As concentrations by 68.9 % and 55.4 %, respectively. Simultaneous exposure of NAMPs and L-As or M-As led to a decrease in As content in shoot (0.45-2.17 mg kg-1) and root (5.68-14.66 mg kg-1) of lettuce, indicating an antagonistic effect between them. In contrast, co-exposure to H-As and NAMPs showed synergistic toxicity, and the leaf chlorophyll and nutritional quality of lettuce were also reduced. NAMPs altered the ratio of different soil aggregate fractions and the distribution of bioavailable As within them, which influenced the absorption of As by lettuce. In conclusion, these direct observations assist us in enhancing the comprehend of the As migration and enrichment characteristics in soil-plant system under the influence of NAMPs.
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Affiliation(s)
- Yanwei Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Weigang Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yujue Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Qian Wen
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Juanjuan Zhou
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Shengze Wu
- Guangdong Testing Institute of Product Quality Supervision, Foshan 528300, China
| | - Hui Liu
- Guangdong Testing Institute of Product Quality Supervision, Foshan 528300, China
| | - Guikui Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Rongliang Qiu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
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15
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Ma K, Fu Y, Liu Y. The effects of microplastics on crop variation depend on polymer types and their interactions with soil nutrient availability and weed competition. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:223-231. [PMID: 38198234 DOI: 10.1111/plb.13612] [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: 04/30/2023] [Accepted: 11/13/2023] [Indexed: 01/12/2024]
Abstract
Microplastics pollution of agricultural soil is a global environmental concern because of its potential risk to food security and human health. Although many studies have tested the direct effects of microplastics on growth of Eruca sativa Mill., little is known about whether these effects are regulated by fertilization and weed competition in field management practices. Here, we performed a greenhouse experiment growing E. sativa as target species in a three-factorial design with two levels of fertilization (low versus. high), two levels of weed competition treatments (weed competition versus no weed competition) and five levels of microplastic treatments (no microplastics, Polybutylene adipate-co-terephthalate [PBAT], Polybutylene succinate [PBS], Polycaprolactone [PCL] or Polypropylene [PP]). Compared to the soil without microplastics, PBS and PCL reduced aboveground biomass and leaf number of the E. sativa. PBS also resulted in increased root allocation and thicker roots in E. sativa. In addition, fertilization significantly mitigated the negative effects of PBS and PCL on aboveground biomass of E. sativa, but weed competition significantly promoted these effects. Although fertilization alleviated the negative effect of PBS on aboveground biomass, such alleviation became weaker under weed competition than when E. sativa grew alone. The results indicate that the effects of specific polymer types on E. sativa growth could be regulated by fertilization, weed management, and even their interactions. Therefore, reasonable on-farm management practices may help in mitigating the negative effects of microplastics pollution on E. sativa growth in agricultural fields.
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Affiliation(s)
- K Ma
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Y Fu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Y Liu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- Ecology, Department of Biology, University of Konstanz, Konstanz, Germany
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16
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Zhang K, Wang M, Li Y, Zhang X, Xiao K, Ma C, Zhang X, Zhang H, Chen Y. Wheat (Triticum aestivum L.) seedlings performance mainly affected by soil nitrate nitrogen under the stress of polyvinyl chloride microplastics. Sci Rep 2024; 14:4962. [PMID: 38424121 PMCID: PMC10904377 DOI: 10.1038/s41598-024-54838-8] [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: 10/15/2023] [Accepted: 02/17/2024] [Indexed: 03/02/2024] Open
Abstract
Microplastics are exotic pollutants and are increasingly detected in soil, but it remains poorly understood how microplastics impact soil and plant systematically. The present study was conducted to evaluate the effects of polyvinyl chloride microplastics (PVC-MPs) on wheat seedlings performance and soil properties. Under the stress of PVC-MPs, no new substance and functional groups were generated in soil by X-ray diffraction and the fourier transform infrared spectroscopy analyses, whereas the diffraction and characteristic peaks and of soil was affected by PVC-MPs. Wheat seedlings shoot biomass and soil nitrate nitrogen were significantly inhibited by PVC-MPs. Chlorophylls were not significant affected by PVC-MPs. Superoxide dismutase, catalase, and peroxidase activities in wheat seedlings increased, while malondialdehyde and proline contents decreased significantly. Redundancy analysis displayed that wheat seedlings traits can be largely explained by soil nitrate nitrogen. Our results indicate that PVC-MPs have more significant influence on soil structure than on soil substance composition. Moreover, even though antioxidant enzyme activities were improved to respond the stress of PVC-MPs, wheat seedlings are not severely impacted by PVC-MPs. Besides, soil nitrate nitrogen is the main factor on wheat seedlings performance and wheat seedlings are prone to ensure the root growth under the stress of PVC-MPs.
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Affiliation(s)
- Ke Zhang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
- Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou, 430000, China
| | - Mengge Wang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
| | - Yi Li
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
| | - Xu Zhang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
| | - Kangqinglin Xiao
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
| | - Chuang Ma
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
- Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou, 430000, China
| | - Xiaojing Zhang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
- Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou, 430000, China
| | - Hongzhong Zhang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 430000, China
- Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou, 430000, China
| | - Yongle Chen
- College of Earth and Environmental Sciences, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, 730000, China.
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17
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Li Z, Feng C, Lei J, He X, Wang Q, Zhao Y, Qian Y, Zhan X, Shen Z. Farmland Microhabitat Mediated by a Residual Microplastic Film: Microbial Communities and Function. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3654-3664. [PMID: 38318812 DOI: 10.1021/acs.est.3c07717] [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: 02/07/2024]
Abstract
How the plastisphere mediated by the residual microplastic film in farmlands affects microhabitat systems is unclear. Here, microbial structure, assembly, and biogeochemical cycling in the plastisphere and soil in 33 typical farmland sites were analyzed by amplicon sequencing of 16S rRNA genes and ITS and metagenome analysis. The results indicated that residual microplastic film was colonized by microbes, forming a unique niche called the plastisphere. Notable differences in the microbial community structure and function were observed between soil and plastisphere. Residual microplastic film altered the microbial symbiosis and assembly processes. Stochastic processes significantly dominated the assembly of the bacterial community in the plastisphere and soil but only in the plastisphere for the fungal community. Deterministic processes significantly dominated the assembly of fungal communities only in soil. Moreover, the plastisphere mediated by the residual microplastic film acted as a preferred vector for pathogens and microorganisms associated with plastic degradation and the nitrogen and sulfur cycle. The abundance of genes associated with denitrification and sulfate reduction activity in the plastisphere was pronouncedly higher than that of soil, which increase the potential risk of nitrogen and sulfur loss. The results will offer a scientific understanding of the harm caused by the residual microplastic film in farmlands.
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Affiliation(s)
- Zhenling Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
- The Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Chenghong Feng
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
| | - Jinming Lei
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiaokang He
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
| | - Qixuan Wang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
| | - Yue Zhao
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
| | - Yibin Qian
- National Plot Zone for Ecological Conservation (Hainan) Research Center, Hainan Research Academy of Environmental Sciences, Haikou 571127, P. R. China
| | - Xinmin Zhan
- Civil Engineering, University of Galway, Galway H91 TK33, Ireland
| | - Zhenyao Shen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, P. R. China
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18
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Lu L, Zhang R, Wang K, Tian J, Wu Q, Xu L. Occurrence, influencing factors and sources of atmospheric microplastics in peri-urban farmland ecosystems of Beijing, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168834. [PMID: 38036125 DOI: 10.1016/j.scitotenv.2023.168834] [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: 10/25/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Abstract
Atmosphere is an important component of the microplastics (MPs) cycle. However, studies on atmospheric MPs in peri-urban farmland ecosystems are limited. Herein, the occurrence, influencing factors and geographic sources of atmospheric MPs in peri-urban farmland ecosystems have been analyzed. The average deposition flux of atmospheric MPs was found to be 167.09 ± 92.03 item·m-2·d-1. Around 68 % MPs had particle size <1000 μm, while the main colors of MPs were black (40.71 %) and blue (20.64 %). Approximately 91 % MPs were fibers, while polyethylene terephthalate (49 %) and rayon (36.93 %) were observed as the major microplastic types. The main factors influencing the atmospheric deposition of MPs were gross domestic product (GDP), population density, air pressure, and wind direction. Deposition fluxes exhibited positive correlations with GDP, population density and air pressure, and negative correlations with wind direction. Combined with the backward trajectory model, MPs were mainly found to be originated from the southeast in September and from the northwest in October-February. The study of atmospheric MPs in farmland ecosystems in peri-urban areas is important for the protection of ecological environment, prevention of human diseases and control of MPs pollution.
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Affiliation(s)
- Luli Lu
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 500025, China; Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Ruixuan Zhang
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Kang Wang
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Jiayu Tian
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Qixin Wu
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 500025, China.
| | - Li Xu
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China.
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19
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Xu G, Li Y, Lin X, Yu Y. Effects and mechanisms of polystyrene micro- and nano-plastics on the spread of antibiotic resistance genes from soil to lettuce. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169293. [PMID: 38104810 DOI: 10.1016/j.scitotenv.2023.169293] [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: 10/02/2023] [Revised: 12/05/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
Effects of microplastics (MPs) and nanoplastics (NPs) on the spread of antibiotic resistance genes (ARGs) in soil-plant systems are still unclear. To investigate the spread and mechanisms of ARGs from soil to lettuce, lettuce was exposed to soil spiked with two environmentally relevant concentrations of polystyrene MPs (100 μm) and NPs (100 nm). Results showed that microorganisms that carried ARGs in soil were increased after exposure to MPs/NPs, which led to an increase in ARGs in roots. NPs were absorbed by roots and can be transported to leaves. Analysis of transcriptomics, proteomics and metabolomics indicated that high concentration of NPs regulated the expression of related genes and proteins and improved the accumulation of flavonoids in the lettuce, therefore decreased the abundance of microorganisms that contained ARGs. Our work emphasizes the size and dose influences of MPs and NPs on the spread of ARGs from soil to plant.
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Affiliation(s)
- Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yanjun Li
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaolong Lin
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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20
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Yang X, Wan Z, Xiao J, Li F, Zhang F, Zhang Z. Evaluation of niche, diversity, and risks of microplastics in farmland soils of different rocky desertification areas. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133603. [PMID: 38280320 DOI: 10.1016/j.jhazmat.2024.133603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/18/2024] [Accepted: 01/21/2024] [Indexed: 01/29/2024]
Abstract
The occurrence, sources, effects, and risks of microplastics (MPs) in farmland soils have attracted considerable attention. However, the pollution and ecological characteristics of MPs in farmland soils at different levels of rocky desertification remain unclear. We collected and analyzed farmland soil samples from rocky desertification areas in Guizhou, China, ranging from no to heavy risks. We explored differences and migration of MPs across these areas, unveiled the relationship between diversity, niche, and risks of MPs, and determined influencing factors. The average abundance of soil MPs was 8721 ± 3938 item/kg, and the abundance and contamination factor (CF) of MPs escalated with the increase in rocky desertification level. Diversity, niche, and risk of soil MPs in different rocky desertification areas were significantly different. Rocky desertification caused both MP community differences and linked MP communities at different sites. Diversity and niche significantly affected MP risk (p < 0.05). Environmental factors with significant correlations (p < 0.05) with the abundance and ecological characteristics of MPs varied significantly in soils of different rocky desertification areas. This study advances our comprehension of MP pollution in farmland soils within rocky desertification areas, offering essential data and theoretical insights for the development of control strategies.
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Affiliation(s)
- Xiuyuan Yang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Zuyan Wan
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Jinnan Xiao
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Fupeng Li
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Fudong Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Zhenming Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China.
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21
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Wang Y, Xv X, Shao T, He Q, Guo Z, Wang Y, Guo Q, Xing B. A case on source to soil to solutions: Distribution characteristics of microplastics in farmland soil of the largest vegetable base in Northwest China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167910. [PMID: 37866595 DOI: 10.1016/j.scitotenv.2023.167910] [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: 08/06/2023] [Revised: 09/21/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
The wide application of facility agriculture accelerated the rapid development of agriculture. However, microplastics pollution in the soil caused by long-term residual agricultural film posed a significant threat to the soil ecosystem and human health. Jingyang County of Shaanxi Province was the largest vegetable planting base in northwest China. Soil samples of facility agriculture and non-facility agriculture were collected to investigate the distribution characteristics and risks of microplastics. The abundance of microplastics in Jingyang County ranged from 200.00 to 4733.33 n·kg-1, and the mean abundance was 1955.00 n·kg-1. Microplastics abundance in facility agriculture soil was higher than that in non-facility agriculture soil, and it increased with the growth of planting years. In general, the size of soil microplastics was mainly <100 μm and the abundance was negatively correlated with particle size. There were 30 types of chemical constituents in the microplastics detected, and PE (47.03 %) and PET (11.48 %) were the main ones. In addition, the types of microplastics in soil were identical with those detected in irrigation water and fertilizer, which provided another source of soil microplastics. All the sampling sites were ecological risk category I, and there was no carcinogenic risk to human health at present. In the future, the government should advocated and encouraged farmers to improve mulch recycling efficiency. Correspondingly, more positive action should be taken to the management on mulch recycling and the standards on placement of waste agricultural inputs. This study would provide foundation data for the research of microplastics pollution in farmland and the risk assessment of ecosystem and human health.
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Affiliation(s)
- Yanhua Wang
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China.
| | - Xinqi Xv
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Tianjie Shao
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Qianyao He
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Ziyi Guo
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Yuting Wang
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Qing Guo
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, United States.
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22
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Ding J, Liang Z, Lv M, Li X, Lu S, Ren S, Yang X, Li X, Tu C, Zhu D, Chen L. Aging in soil increases the disturbance of microplastics to the gut microbiota of soil fauna. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132611. [PMID: 37748304 DOI: 10.1016/j.jhazmat.2023.132611] [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: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023]
Abstract
Microplastics (MPs) in the soil environment inevitably experience aging processes. However, how aging in soil affects MP toxicity to soil fauna remains poorly understood. In this study, two types of widely distributed MPs (polypropylene and tire wear particles) were aged in different soils, and their surface properties, morphology, leaching features of additives, biofilm colonization and toxicity to the typical soil fauna Enchytraeus crypticus were investigated. Results showed that aging in soil slightly changed the surface properties and morphology for both types of MPs, but significantly affected the release of additives, especially for those MPs aged in soil amended with manure. Moreover, a distinct and less diverse microbial community than the surrounding soils was formed on the surface of MPs, and MP type was a determinant of the biofilm microbial community. Exposure experiments indicated that aged MPs, especially those aged in soil with manure significantly affected the reproduction of soil worms with a more obvious disturbance to their gut microbiota, and biofilm features and changes in the leaching properties of MPs during aging were the main factors for these shifts. This study is the first attempt to reveal the role of aging in soil in MP toxicity to soil fauna.
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Affiliation(s)
- Jing Ding
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Zhaoqin Liang
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Min Lv
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
| | - Xiuyu Li
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Shuang Lu
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Suyu Ren
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Xiaoyong Yang
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Xiaoqiang Li
- School of Environmental and Material Engineering, Yantai University, Yantai 264005, China
| | - Chen Tu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Dong Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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23
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Qiu Y, Zhou S, Zhang C, Chen L, Qin W, Zhang Q. Vertical distribution and weathering characteristic of microplastics in soil profile of different land use types. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166902. [PMID: 37709069 DOI: 10.1016/j.scitotenv.2023.166902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/20/2023] [Accepted: 09/05/2023] [Indexed: 09/16/2023]
Abstract
After deposition on the topsoil, microplastics (MPs) may be vertically migrated to deeper soil layers over time or eventually enter the groundwater system, leading to more widespread environmental and ecological issues. However, the vertical distribution of MPs in natural soils are not yet fully understood. In this study, we collected soil profiles (0-100 cm) from four different land use types on the west bank of Taihu Lake in China to investigate the vertical distribution and weathering characteristics of MPs. The average abundance of soil MPs followed the pattern of paddy field (490 ± 82 items/kg) > dryland (356 ± 55 items/kg) > tea garden (306 ± 32 items/kg) > woodland (171 ± 27 items/kg) in the 0-10 cm layer, and the abundance of MPs decreased linearly with soil depth (r = -0.89, p < 0.01). Compared to tea garden and woodland, MPs in dryland and paddy field have migrated to deeper soil layers (80-100 cm). The carbonyl index of polyethylene and polypropylene MPs increased significantly with soil depth (r = 0.96, p < 0.01), with values of 0.58 ± 0.30 and 0.54 ± 0.33, respectively. The significant negative correlation between MPs size and carbonyl index confirmed that small-sized MPs in deeper soil layers originated from the weathering and fragmentation of MPs in topsoil. The results of structural equation model showed that roots and soil aggregates may act as filters during the vertical migration of MPs. These findings contribute to a better understanding of the environmental fate of MPs in soil and the assessment of associated ecological risks.
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Affiliation(s)
- Yifei Qiu
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing 210024, China
| | - Shenglu Zhou
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing 210024, China.
| | - Chuchu Zhang
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China
| | - Long Chen
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing 210024, China
| | - Wendong Qin
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing 210024, China
| | - Qi Zhang
- School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China; Key Laboratory of Coastal Zone Exploitation and Protection, Ministry of Natural Resources, Nanjing 210024, China
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24
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Qi R, Tang Y, Jones DL, He W, Yan C. Occurrence and characteristics of microplastics in soils from greenhouse and open-field cultivation using plastic mulch film. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:166935. [PMID: 37690755 DOI: 10.1016/j.scitotenv.2023.166935] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023]
Abstract
There is a major knowledge gap concerning the extent of microplastic pollution in agronomic regions of China, which represent a plastic use hotspot. In order to clarify the amendment of agronomic region and plastic film mulching mode to microplastics distribution, the characteristics of microplastics distributed in agricultural soils from three typical regions (Beijing (BJ), Shandong (SD), and Xinjiang (XJ)) with two plastic film mulching modes (greenhouse (G) and conventional field-based film mulching (M)) in China were investigated. Microplastics weight and their response to planting regions were also evaluated in this study. The result showed that the average abundance of microplastics in soils from BJ, SD, and XJ was 1.83 × 104 items kg-1, 4.02 × 104 items kg-1, and 3.39 × 104 items kg-1, and the estimated weight of microplastics per kg of dry soils was 3.12 mg kg-1, 5.63 mg kg-1, and 7.99 mg kg-1, respectively. Microplastics in farmland were mainly of small particle size (50 to 250 μm), with their abundance decreasing with increasing particle size. Among the microplastics detected, polyethylene and polypropylene were the two dominant types present, accounting for 50.0% and 19.7%, respectively. The standard total effect of planting regions on microplastic number and weight was 31.8% and 32.3%, and plastic film mulching modes (G vs. M) could explain 34.4% of the total variation of microplastic compositions with a contribution rate of 65.6% in this study. This research provides key data for an assessment of the environmental risk of microplastics and supports the development of guidelines for the sustainable use of agricultural plastic film. Further, it is necessary to quantify and assess the contribution of other different plastic sources to microplastics in soil. Big data technologies or isotope tracer techniques may be promising approaches.
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Affiliation(s)
- Ruimin Qi
- School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Yuanyuan Tang
- School of Environmental Science and Engineering, College of Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Davey L Jones
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Food Futures Institute, Murdoch University, Murdoch, WA 6150, Australia
| | - Wenqing He
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changrong Yan
- Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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25
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Mohan K, Lakshmanan VR. A critical review of the recent trends in source tracing of microplastics in the environment. ENVIRONMENTAL RESEARCH 2023; 239:117394. [PMID: 37838194 DOI: 10.1016/j.envres.2023.117394] [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: 07/25/2023] [Revised: 09/26/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
Microplastics are found across the globe because of their size and ability to transport across environments. The effects of microplastics on the micro- and macro-organisms have brought out concern over the potential risk to human health and the need to regulate their distribution at the source. Control of microplastic pollution requires region-specific management and mitigation strategies which can be developed with the information on sources and their contributions. This review provides an overview of the sources, fate, and distribution of microplastics along with techniques to source-trace microplastics. Source-tracing approaches provide both qualitative and quantitive information. Since better outcomes have been produced by the integration of techniques like backward trajectory analysis with cluster analysis, the significance of integrated and multi-dimensional approaches has been emphasized. The scope of the plastisphere, heavy metal, and biofilm microbial community in tracing the sources of microplastics are also highlighted. The present review allows the researchers and policymakers to understand the recent trends in the source-tracing of microplastics which will help them to develop techniques and comprehensive action plans to limit the microplastic discharge at sources.
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Affiliation(s)
- Kiruthika Mohan
- Department of Environmental and Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology, Vellore, 632014, India.
| | - Vignesh Rajkumar Lakshmanan
- Department of Environmental and Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology, Vellore, 632014, India.
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26
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Zhu B, Chen Y, Jiang L, Liu C, Zhu H, Qiu D, Wang S. Quantification and characterization of microplastics in farmland soils of Jiangsu Province, East China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:120653-120662. [PMID: 37943431 DOI: 10.1007/s11356-023-30654-x] [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: 06/15/2023] [Accepted: 10/20/2023] [Indexed: 11/10/2023]
Abstract
The soil ecosystem plays a significant role in the dynamics of microplastics. Qualitative and quantitative analyses of microplastics in six farmland plots from the cities of Nanjing, Suzhou, and Xuzhou were conducted by using laser infrared imaging system (LDIR). The results showed that the abundance of microplastics in farmland soils in Jiangsu Province ranged from 667-9333 items/kg, and the difference between the abundance of microplastics in soils from open-field cultivation and greenhouse farming was not significant. The vertical distribution characteristics showed that the abundance of microplastic decreased significantly with the increase of soil depth. However, there was no significant difference in particle size between top soil (0-5 cm) and deep soil (10-20 cm). Fragments were the most common microplastic form in soil samples (94.6%), with polyvinyl chloride (PVC) being the main polymer type, followed by polyethylene terephthalate (PET). Compared with previous studies conducted in China, the abundance of microplastics in farmland soils in Jiangsu Province was at moderate level but was notably higher than other places within the Yangtze River Delta region. The conclusions drawn from this paper provided important reference data for future assessment of microplastic pollution in agricultural fields. Furthermore, they establish a fundamental groundwork for understanding the migration patterns of MPs in soil environments.
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Affiliation(s)
- Bingqing Zhu
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China.
| | - Ying Chen
- College of Environment, Hohai University, Nanjing, 210098, China
| | - Linhui Jiang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
| | - Cuicui Liu
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
| | - Haimei Zhu
- Pizhou Station of Farmland Quality Protection, Xuzhou, 221300, China
| | - Dan Qiu
- Jiangsu Provincial Station of Farmland Quality and Agricultural Environmental Protection, Nanjing, 210036, China
| | - Shui Wang
- Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, China
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27
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Yang X, Zhang Z, Guo X. Impact of soil structure and texture on occurrence of microplastics in agricultural soils of karst areas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166189. [PMID: 37567305 DOI: 10.1016/j.scitotenv.2023.166189] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
The impact of microplastics (MPs) on soil ecosystems has attracted widespread attention; however, the effects of soil structure and texture on the occurrence of MPs are not fully understood. In this study, we investigated the effects of soil structure and texture on the abundance of MPs and their potential mechanisms in agricultural soils of karst areas in Guizhou, China. The results showed the average abundance of MPs was 2948 items/kg. The soil texture in the study area can be categorized into seven types such as powdered-light clay, the range of total soil porosity was 39.05-69.22 % and the range of soil bulk density was 0.66-1.51 g/cm3. Soils with a powdered-light clay, low soil porosity, and low soil bulk density showed higher MPs pollution. The percentage of pellet MPs in agricultural soils with a powdered-light clay was 84 %, which was higher than that of the other soil textures. The direct effects of soil texture, soil porosity, and soil bulk density on MPs abundance were much lower than the indirect effects, with soil texture having the highest effect on MPs abundance. We speculated that karst geology may affect the accumulation and distribution of MPs in soil by affecting soil texture and structure, which, in turn, affects the fragmentation and migration of MPs. These findings will help to better understand the mechanisms of soil MPs pollution and provide a scientific basis for the development of relevant control strategies.
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Affiliation(s)
- Xiuyuan Yang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Zhenming Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China; Key Laboratory of Kast Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China.
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China.
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28
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Yang X, Zhang Z, Zhang J. Study of soil microplastic pollution and influencing factors based on environmental fragility theory. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165435. [PMID: 37442481 DOI: 10.1016/j.scitotenv.2023.165435] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 07/15/2023]
Abstract
Soil microplastics (MPs) pollution is a global concern, but the distribution of MPs and the factors affecting the distribution of MPs in different ecologically fragile karst areas remain poorly understood. Here, we investigated the spatial distribution, characteristics, and composition of MPs in different ecologically fragile karst areas of Guizhou Province and explored the relationship between ecosystem fragility and MPs. Structural equation models combined with robust random forest (RF) models were used to clarify the effects of karst soil properties on MPs and quantify their relative contributions. The abundance of soil MPs in ecologically fragile karst areas was 2949 item kg-1, and the risk of MPs contamination was highest in medium-fragile areas. The robust RF models precisely predicted the abundance of soil MPs in different fragile areas, and the mean root mean square error and R2 were 0.21 and 0.93, respectively. The contribution of karst soil properties to the abundance of MPs was estimated. Some soil chemical properties had a significant effect (p < 0.05) on MPs pollution in ecologically fragile karst areas. The results of our study suggest that the fragile ecological environment may exacerbate MPs pollution. Our study also contributes to establish a scientific theoretical foundation for the utilization of plastics and the prevention and control of microplastics pollution in karst ecosystems.
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Affiliation(s)
- Xiuyuan Yang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Zhenming Zhang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China; Key Laboratory of Kast Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang 550025, China.
| | - Jiachun Zhang
- Guizhou Botanical Garden, Guizhou Academy of Sciences, Guiyang 550004, Guizhou, China.
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29
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Chen L, Yu L, Li Y, Han B, Zhang J, Tao S, Liu W. Status, characteristics, and ecological risks of microplastics in farmland surface soils cultivated with different crops across mainland China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 897:165331. [PMID: 37414184 DOI: 10.1016/j.scitotenv.2023.165331] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/27/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Microplastics (MPs) in agricultural soils could affect the safety of food crops. However, most relevant studies have paid scant attention to the crop fields and focused more on MPs in farmlands with or without film mulching in different regions. To detect MPs, we investigated farmland soils with >30 typical crop species from 109 cities in 31 administrative districts across mainland China. The relative contributions of different MP sources in different farmlands were estimated in detail based on a questionnaire survey, and we also assessed the ecological risks of MPs. Our results indicated the order of MP abundances in farmlands with different crop types, namely fruit fields > vegetable fields > mixed crop fields > food crop fields > cash crop fields. For the detailed sub-types, the highest MP abundance was detected in grape fields, which was significantly higher than that in solanaceous & cucurbitaceous vegetable fields (ranked second, p < 0.05), whereas the MP abundance was lowest in cotton and maize fields. The total contributions of three potential sources, namely livestock and poultry manure, irrigation water, and atmospheric deposition to MPs, varied depending on the crop types in the farmlands. Owing to exposure to MPs, the potential ecological risks to agroecosystems across mainland China were not negligible, particularly in fruit fields. The results of the current study could provide basic data and background information for future ecotoxicological studies and relevant regulatory strategies.
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Affiliation(s)
- LiYuan Chen
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Lu Yu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - YuJun Li
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - BingJun Han
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - JiaoDi Zhang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Shu Tao
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - WenXin Liu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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30
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Zhao H, Zhou Y, Lu Z, Ren X, Barcelo D, Zhang Z, Wang Q. Microplastic pollution in organic farming development cannot be ignored in China: Perspective of commercial organic fertilizer. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132478. [PMID: 37688868 DOI: 10.1016/j.jhazmat.2023.132478] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/28/2023] [Accepted: 09/02/2023] [Indexed: 09/11/2023]
Abstract
Commercial organic fertilizer, an essential fertilizer for developing organic farming in China, has been identified as a potentially important source of microplastics (MPs) on farmland. However, little is known about the occurrence of MPs in commercial organic fertilizers and their potential ecological risks nationwide. Here, stereoscopy and laser-infrared imaging spectrometry were used to comprehensively investigate the abundance, size, type and morphology of MPs in commercial organic fertilizers collected from mainland China, assess the ecological risks, and predict MP contamination. Commercial organic fertilizers contained many MPs (8.88 ×103 to 2.88 ×105 items/kg), especially rich in small-size MPs (<100 µm), accounting for 76.53%. The highest MP pollution load value was observed in fertilizers collected from East China. Chlorinated polyethylene, polyurethane, polyethylene and polypropylene were the dominant MPs with the shape of film and fragment, concentrated in small sizes (<100 µm). The risk index (H-index) of the MPs was used to quantify the ecological risk of the MPs in the different samples, and most of the fertilizers were at level Ⅲ with high risk. Predictably, 2.32 × 1013 - 2.81 × 1016 MPs will accumulate in orchard soils after five years of fertilization, especially in South, Southwest and East China. This study provides primary scientific data on MP pollution in commercial fertilizer and the health development of organic farming.
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Affiliation(s)
- Haoran Zhao
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Yanting Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Zonghui Lu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Xiuna Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Damia Barcelo
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), 08034 Barcelona, Spain
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China
| | - Quan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, PR China.
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Guo S, Zhang J, Liu J, Guo N, Zhang L, Wang S, Wang X, Zhao M, Zhang B, Chen Y. Organic fertilizer and irrigation water are the primary sources of microplastics in the facility soil, Beijing. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165005. [PMID: 37353032 DOI: 10.1016/j.scitotenv.2023.165005] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/03/2023] [Accepted: 06/17/2023] [Indexed: 06/25/2023]
Abstract
The large-scale utilization of plastic products in agricultural facility production has resulted in considerable accumulation of microplastics in the soil. However, there is a lack of systematic research on the accumulation and distribution of microplastics in facility agriculture. This study examined the presence of microplastics in the 15 representatives of Beijing facility agriculture soil in five districts with different planting years, and assessed the potential pollution risks. The abundance of microplastics in soil layers at a depth of 0-10, 10-20, and 20-30 cm was 896.5 ± 80.0 (range, 160-2120), 630.6 ± 47.0 (180-1340), and 445.3 ± 47.0 (80-1480) items/kg, respectively. Overall, the microplastics were primarily fiber-shaped (72.2 %), white (75.9 %), 1-2 mm in size (37.9 %), and composed of polypropylene and polyethene. The risk assessment indices of the microplastics in the 0-10, 10-20, and 20-30 cm soil layers were 272.1, 289.5, and 291.6, respectively, representing a risk level of 4 in each case. Using the conditional fragmentation model, we found that the microplastics in facility soil featured low stability and small sizes, and their primary sources were organic fertilizer and irrigation water. The number of mulching years, irrigation method, and the amount of organic fertilizer applied, influenced the accumulation of microplastics in the facility soil. This study provides scientific evidence supporting the pollution levels and need for risk control related to microplastics in facility soils.
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Affiliation(s)
- Sen Guo
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; College of Land Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Jiajia Zhang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Jiawei Liu
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; College of Land Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Ning Guo
- Beijing Cultivated Land Construction and Protection Center, Beijing 100029, China
| | - Lei Zhang
- Beijing Cultivated Land Construction and Protection Center, Beijing 100029, China
| | - Shengtao Wang
- Beijing Cultivated Land Construction and Protection Center, Beijing 100029, China
| | - Xuexia Wang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Meng Zhao
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Baogui Zhang
- College of Land Science and Technology, China Agricultural University, Beijing, 100193, China.
| | - Yanhua Chen
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
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32
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Zhang X, Feng Q, Li X, Guo L, Ma D, Cheng X, Qi Y. Microplastics in household fecal sewage treatment facilities of rural China. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130925. [PMID: 36753913 DOI: 10.1016/j.jhazmat.2023.130925] [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: 12/06/2022] [Revised: 01/18/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Fecal sewage (FS), composed of human feces and wastewater, potentially contains microplastics (MPs) that are prone to environmental pollution. In this study, 65 FS samples, as collected from 65 villages in 27 Chinese provinces, have been employed to investigate the characteristics of MPs in three kinds of household FS treatment facilities of rural regions, and the possibility of FS irrigation as the source of MPs in farmlands. As a result, seven physicochemical properties and microbial community of FS were detected, and pertinent social statistical data were collected to determine influencing factors of MPs. The abundance of FS-based MPs ranged from 47.16 to 143.05 particles L-1, with an average 90.38 ± 20.63 particles L-1. The FS from northern China had higher MPs abundance than that from southern and northwestern China. Average MPs abundance was cesspit (101.33) > septic tank (86.54) > biogas digester (84.11). The estimated mass of FS-based MPs entering farmlands in China was 7.8 × 103-5.6 × 104 tons a year. Chemical oxygen demand and genus Phascolarctobacterium might mainly affected MPs abundance in FS, while some other factors such as suspended substance, ambient temperature, and medical care spending were also significantly correlated with FS-based MPs abundance.
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Affiliation(s)
- Xuan Zhang
- School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China
| | - Qingge Feng
- School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Xiaowei Li
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Li Guo
- College of Design Art, Liuzhou Institute of Technology, Liuzhou 545616, China
| | - Dachao Ma
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Xiaodie Cheng
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Yuan Qi
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
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