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Zi S, Wu D, Zhang Y, Jiang X, Liu J. Insights into the controlling factors of the transport of tire wear particles in saturated porous media: The facilitative role of aging and fulvic acid. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175665. [PMID: 39181254 DOI: 10.1016/j.scitotenv.2024.175665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/14/2024] [Accepted: 08/18/2024] [Indexed: 08/27/2024]
Abstract
The widespread distribution and potential adverse effects of tire wear particles (TWPs) on soil and groundwater quality pose a growing environmental concern. This study investigated the transport behavior of TWPs in saturated porous media and elucidated the underlying mechanisms influenced by environmental factors. Additionally, the effects of key environmental factors, such as aging, ionic strength, cation species, medium type, and natural organic matter (NOM), on the transport of TWPs were evaluated. The results showed that aging processes simulated through O3 and UV irradiation altered the physicochemical properties of TWPs, increased the mobility of TWPs at low ionic strengths. However, the high ionic strengths and the presence of Ca2+ significantly inhibited the mobility of TWPs due to enhanced aggregation. The transport mechanism of the original and aged TWPs shifted from blocking to ripening under favorable retention conditions (i.e., high ionic strengths, divalent cations, and fine sands). Interestingly, the presence of fulvic acid (FA) inhibited the ripening of the three TWPs, significantly promoting their transport through a spatial site resistance mechanism. The two-site kinetic attachment model (TSKAM), extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, and colloid filtration theory (CFT) were applied to describe the transport behavior of the TWPs. The study provided a comprehensive understanding of the transport behavior of TWPs in groundwater environments, highlighting the environmental risks associated with their widespread distribution.
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Affiliation(s)
- Shaoxin Zi
- College of Marine and Environmental Sciences, Ministry of Education Key Laboratory of Marine Resource Chemistry and Food Technology, Tianjin University of Science & Technology, Tianjin 300457, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Di Wu
- College of Marine and Environmental Sciences, Ministry of Education Key Laboratory of Marine Resource Chemistry and Food Technology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yingxin Zhang
- College of Marine and Environmental Sciences, Ministry of Education Key Laboratory of Marine Resource Chemistry and Food Technology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Xiangtao Jiang
- Marine Science Institute, The University of Texas at Austin, Port Aransas, TX 78373, USA
| | - Jin Liu
- College of Marine and Environmental Sciences, Ministry of Education Key Laboratory of Marine Resource Chemistry and Food Technology, Tianjin University of Science & Technology, Tianjin 300457, China.
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2
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Xu S, Wang Q, Lao JY, Cao Y, Hong P, Chen C, Lam EY, Fang JKH, Lee S, Leung KMY. Typical Tire Additives in River Water: Leaching, Transformation, and Environmental Risk Assessment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:18940-18949. [PMID: 39382147 DOI: 10.1021/acs.est.4c05449] [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: 10/10/2024]
Abstract
Tire wear particles (TWPs) released during vehicle driving can enter water bodies, leading to leaching of tire additives (TAs) in aquatic environments. However, the transformation behavior and related ecological impacts of TAs and their transformation products (TPs) remain unclear. In this study, laboratory-based simulation experiments and field investigations were conducted to explore the transformation mechanisms and ecological risks of TAs. After being placed in river water for 24 h, about 7-95% of 12 investigated TAs in TWPs were leached. Forty-eight TPs from eight TAs were tentatively identified along with different transformation pathways via suspect screening by high-resolution mass spectrometry. Semiquantitative results indicated that TPs derived from N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylene-diamine (6PPD) were predominant in leachates, while aryl hydrolysis and quinone pathways were the main transformation pathways. Field investigations on urban surface water samples from 16 sites in Hong Kong revealed the occurrence of 17 TAs and 1 TP, with concentrations ranging from 13.9 to 2230 ng/L (median ± standard deviation: 226 ± 534 ng/L). Sixteen TPs from six TAs were additionally identified via suspect screening. It is estimated that 6PPD-quinone and seven TAs could pose medium to high ecological risk, while N-(1,3-dimethylbutyl)-N'-phenyl-p-quinonediimine, a frequently detected TP, was identified as a persistent-bioaccumulative-toxic substance.
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Affiliation(s)
- Shaopeng Xu
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Qi Wang
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Jia-Yong Lao
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Yaru Cao
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Pei Hong
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, School of Ecology and Environment, Anhui Normal University, Wuhu 241002, China
| | - Chong Chen
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
| | - Edmund Y Lam
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam 999077, Hong Kong SAR, China
| | - James Kar-Hei Fang
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
- Department of Food Science and Nutrition and Research Institute for Future Food, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong SAR, China
| | - Seokhwan Lee
- Department of Engine Research, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Kenneth M Y Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, China
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Xu Q, Kazmi SSUH, Li G. Tracking the biogeochemical behavior of tire wear particles in the environment - A review. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:136184. [PMID: 39418907 DOI: 10.1016/j.jhazmat.2024.136184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 10/11/2024] [Accepted: 10/14/2024] [Indexed: 10/19/2024]
Abstract
The environmental fate and risks associated with tire wear particles (TWPs) are closely linked to their biogeochemical behaviors. However, reviews that focus on TWPs from this perspective remain scarce, hindering our understanding of their environmental fate and cascading effects on ecosystems. In this review, we summarize the existing knowledge on TWPs by addressing five key areas: (i) the generation and size-dependent distribution of TWPs; (ii) the release and transformation of TWP-leachates; (iii) methodologies for the quantification of TWPs; (iv) the toxicity of TWPs; and (v) interactions of TWPs with other environmental processes. It has been established that the size distribution of TWPs significantly influences their transport and occurrence in different matrices, leading to the release and transformation of specific TWP-chemicals that can be toxic to organisms. By highlighting the challenges and knowledge gaps in this field, we propose critical issues that need to be addressed to enhance the risk assessment of TWPs. This review aims to provide a comprehensive framework for evaluating the environmental behavior of TWPs.
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Affiliation(s)
- 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, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China
| | - Syed Shabi Ul Hassan Kazmi
- Key Laboratory of Urban Environment and Health, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, 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, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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4
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Bae SH, Chae E, Park YS, Lee SW, Yun JH, Choi SS. Characteristics of tire-road wear particles (TRWPs) and road pavement wear particles (RPWPs) generated through a novel tire abrasion simulator based on real road pavement conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173948. [PMID: 38880134 DOI: 10.1016/j.scitotenv.2024.173948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 06/10/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Microparticles such as tire-road wear particles (TRWPs) and road pavement wear particles (RPWPs) are generated by the friction between tire tread and road surface. TRWPs and RPWPs on roads are dispersed through traffic and transferred to rivers and seas via runoff to accumulate in sediments. However, research on the generation of both TRWP and RPWP has rarely been conducted. In this study, the generation of both TRWP and RPWP was investigated using a novel tire abrasion simulator equipped with paved road and bus tire, and their contributions to the generation of microparticles were examined. Two types of model paved roads, asphalt and concrete pavements (AP and CP, respectively), were applied. TRWPs generated from the simulator exhibited morphologies very similar to those on real roads. The abrasion rate for the CP was 2.8 times higher than that for the AP. The wear particle size distributions peaked at the size ranges of 63-106 μm and 212-500 μm for the AP and CP, respectively. Totals of 84 wt% and 89 wt% of the wear particles were distributed in size ranges of 38-212 μm for the AP and 106-1000 μm for the CP. The tire wear particle (TWP) contents in the total wear particles of 38-500 μm were 21.7 wt% and 30.0 wt% for the AP and CP, respectively, and decreased as the particle size decreased. The weight of RPWP was higher than that of TWP in TRWP. Contributions from road pavement to the generation of wear particles of 38-500 μm were 3.6 and 2.3 times higher than those from tire tread for the AP and CP, respectively, and the contribution increased as the wear particle size decreased.
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Affiliation(s)
- Seok-Hu Bae
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam 31214, Republic of Korea
| | - Eunji Chae
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
| | - Yong-Soo Park
- Daekyung Engineering Co., 32, Seokcheon-ro 398 beon-gil, Bucheon-si, Gyeonggi-do 14450, Republic of Korea
| | - Seung-Won Lee
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam 31214, Republic of Korea
| | - Ju-Ho Yun
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam 31214, Republic of Korea
| | - Sung-Seen Choi
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea.
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5
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Wang Y, Li X, Yang H, Wu Y, Pu Q, He W, Li X. A review of tire wear particles: Occurrence, adverse effects, and control strategies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116782. [PMID: 39059345 DOI: 10.1016/j.ecoenv.2024.116782] [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: 01/20/2024] [Revised: 06/16/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
Tire wear particles (TWPs), common mixed particulate emerging contaminants in the environment, have global per capita emissions accounting for 0.23-1.9 kg/year, attracting global attention recently due to their wide detection, small size, mobility, and high toxicity. This review focuses on the occurrence characteristics of TWPs in multiple environmental media, adverse effects on organisms, potential toxicity mechanisms, and environmental risk prevention and control strategies of TWPs. The environmental fate of TWPs throughout the entire process is systematically investigated by the bibliometric analysis function of CiteSpace. This review supplements the gap in the joint toxicity and related toxicity mechanisms of TWPs with other environmental pollutants. Based on the risks review of TWPs and their additives, adverse impacts have been found in organisms from aquatic environments, soil, and humans, such as the growth inhibition effect on Chironomus dilutes. A multi-faceted and rationalized prevention and control treatment of "source-process-end" for the whole process can be achieved by regulating the use of studded tires, improving the tire additive formula, growing plants roadside, encouraging micro-degradation, and other methods, which are first reviewed. By addressing the current knowledge gaps and exploring prospects, this study contributes to developing strategies for reducing risks and assessing the fate of TWPs in multiple environmental media.
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Affiliation(s)
- Yu Wang
- School of Life Science, Zhuhai College of Science and Technology, Zhuhai 519041, China.
| | - Xinao Li
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Hao Yang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Yang Wu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Qikun Pu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Wei He
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Xixi Li
- State Environmental Protection Key Laboratory of Ecological Effect and Risk Assessment of Chemicals, State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory for Lake Pollution Control, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's A1B 3X5, Canada.
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6
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Jeong S, Ryu H, Shin H, Lee MG, Hong J, Kim H, Kwon JT, Lee J, Kim Y. Quantification of tire wear particles in road dust based on synthetic/natural rubber ratio using pyrolysis-gas chromatography-mass spectrometry across diverse tire types. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 942:173796. [PMID: 38851327 DOI: 10.1016/j.scitotenv.2024.173796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Increase in road traffic leads to increased concentrations of tire-wear particles (TWPs), a prominent source of microplastics from vehicles, in road dust. These particles can re-enter the atmosphere or move into aquatic ecosystems via runoff, impacting the environment. Consequently, accurately assessing and managing TWP levels in road dust is crucial. However, the ISO method (ISO/TS 20593 and 21396) uses a constant ratio of styrene-butadiene rubber (SBR) to natural rubber (NR) for all tires, disregarding the variability in tire composition across different types and brands. Our study found substantial SBR content (15.7 %) in heavyweight truck tires, traditionally believed to be predominantly NR. We evaluated the SBR/NR content in 15 tire types and proposed a method to more accurately evaluate TWP concentrations in road dust from five different locations. Our findings suggest that the conventional ISO method may underestimate the concentrations of TWP due to its reliance on a static ratio of SBR/NR. This study underscores the necessity for a more flexible approach that can adapt to the variability in SBR and NR content across different tire types. By delineating the limitations inherent in current assessment methods, our research contributes to a more adaptable understanding of TWP concentrations in road dust. This advancement prompts the development of a revised methodology that more accurately reflects the diverse compositions of tire rubber in environmental samples.
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Affiliation(s)
- Sohee Jeong
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Hyeonjung Ryu
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Hyeokjin Shin
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Min Gyu Lee
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Jaehwan Hong
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Hyunwook Kim
- Department of Environmental Engineering, University of Seoul, Seoul 02504, South Korea
| | - Jung-Taek Kwon
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon 22733, South Korea
| | - Jaewoong Lee
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon 22733, South Korea
| | - Younghun Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea.
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7
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Löber M, Bondorf L, Grein T, Reiland S, Wieser S, Epple F, Philipps F, Schripp T. Investigations of airborne tire and brake wear particles using a novel vehicle design. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:53521-53531. [PMID: 39192151 PMCID: PMC11379764 DOI: 10.1007/s11356-024-34543-9] [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: 01/24/2024] [Accepted: 07/24/2024] [Indexed: 08/29/2024]
Abstract
Non-exhaust emissions have become an increasingly important issue as their levels continue to rise and the health effects of particulate matter (PM) are more widely discussed. To address this issue, a vehicle demonstrator with integrated emission reduction of tires and brakes was developed as part of the Zero Emission Drive Unit Generation-1 (ZEDU-1) project. This novel concept includes the removal of tire road wear particles (TRWP) with a strong ventilation/filtering system and an enclosed multi-disk brake, making it a suitable tool for the investigation of non-exhaust emissions. Particle number (PN) and particle size distribution (PSD) measurements down to 2.5 nm were performed on a chassis dynamometer and on a test track. Due to the low background concentrations on the chassis dynamometer, it is possible to distinguish between tire and brake wear and to characterize even a small number of particle emissions. It could be shown that about 30 % less particles are emitted by the vehicle, when using the novel multi-disk brake instead of the conventional brake. The highest TRWP emissions were collected during acceleration and harsh braking. Characterization of the collected particles using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) revealed diverse particle shapes and differences between particles generated on the dynamometer and on a test track.
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Affiliation(s)
- Manuel Löber
- German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany.
| | - Linda Bondorf
- German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Tobias Grein
- German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Sven Reiland
- German Aerospace Center (DLR), Institute of Vehicle Concepts, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Steffen Wieser
- German Aerospace Center (DLR), Institute of Vehicle Concepts, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Fabius Epple
- German Aerospace Center (DLR), Institute of Vehicle Concepts, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Franz Philipps
- German Aerospace Center (DLR), Institute of Vehicle Concepts, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
| | - Tobias Schripp
- German Aerospace Center (DLR), Institute of Combustion Technology, Pfaffenwaldring 38-40, 70569, Stuttgart, Germany
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Zhang M, Li J, Yin H, Wang X, Qin Y, Yang Z, Wen Y, Luo J, Yin D, Ge Y, Wang C, Sun X, Xu L. Pilot analysis of tire tread characteristics and associated tire-wear particles in vehicles produced across distinct time periods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 932:172760. [PMID: 38670369 DOI: 10.1016/j.scitotenv.2024.172760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Owing to stringent vehicle emission regulations and the shifting automotive landscape towards clean-energy vehicles, the emission of non-exhaust tire-wear particles and its implications for microplastic contamination have garnered substantial attention, emerging as a focal point of research interest. Unlike traditional source apportionment methods involving direct environmental sampling, this study focuses on the physical and chemical attributes of tire treads, the tread temperature changes, and the tire-wear particle emissions of three light-duty vehicles manufactured between 2011 and 2021. This study advances the understanding of the effects of tire properties on particle emissions, which provides preliminary information on low-wear tires. The results show that tire-wear particle emissions, mainly composed of ultrafine particles in terms of number, heavily depend on the elevated tread temperatures. The change in tread temperature is influenced not only by the initial tread temperature but also by tread pyrolysis characteristics. Ca, Mg, and Zn are abundantly contained in the tire tread and tire-wear particles.
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Affiliation(s)
- Mengzhu Zhang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jiachen Li
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Hang Yin
- State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Vehicle Emission Control Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xin Wang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yechen Qin
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhengjun Yang
- China Automotive Technology and Research Center Co., Ltd., Tianjin 300300, China
| | - Yi Wen
- CATARC Automotive Test Center (Tianjin) Co., Ltd., Tianjin 300300, China
| | - Jiaxin Luo
- CATARC Automotive Test Center (Tianjin) Co., Ltd., Tianjin 300300, China
| | - Dailin Yin
- CATARC Automotive Test Center (Tianjin) Co., Ltd., Tianjin 300300, China
| | - Yunshan Ge
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Changhui Wang
- Shandong Chambroad New Energy Holding Development Co., Ltd., Binzhou 256600, China
| | - Xingyu Sun
- Shandong Chambroad New Energy Holding Development Co., Ltd., Binzhou 256600, China
| | - Linxun Xu
- Shandong Chambroad New Energy Holding Development Co., Ltd., Binzhou 256600, China
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9
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Chen Z, Shi C, Liu A. Toxicity of urban stormwater on Chlorella pyrenoidosa: Implications for reuse safety. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171803. [PMID: 38508264 DOI: 10.1016/j.scitotenv.2024.171803] [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: 01/14/2024] [Revised: 03/13/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
Urban stormwater is an alternative water source used to mitigate water resource shortages, and ensuring the safety of stormwater reuse is essential. An in-depth understanding of both individual pollutant concentrations/loads in stormwater and holistic stormwater quality can be used to comprehensively evaluate how safely stormwater can be reused. The toxicity test takes all pollutants present in water samples into account, and the results reflect the integrated effect of these pollutants. In this study, the influence of urban stormwater sourced from different land uses on microalgae (Chlorella pyrenoidosa) and the possible toxicity mechanisms were investigated. The results showed that urban stormwater, particularly residential road stormwater, significantly inhibited microalgal growth. The chlorophyll contents of microalgae exposed to residential road stormwater were relatively lower, while the corresponding values were relatively higher for microalgae exposed to grassland road stormwater. Additionally, the antioxidant-related metabolism of microalgae could be dysregulated due to exposure to urban stormwater. A possible toxicity mechanism is that urban stormwater influences metabolic pathways related to chlorophyll synthesis and further hinders photosynthesis and hence microalgal growth. To resist oxidative stress and maintain regular microalgal cell activities, the ribosome metabolism pathway was upregulated. The research results contribute to elucidating the toxicity effects of urban stormwater and hence provide useful insight for ensuring the safety of stormwater reuse. It is also worth noting that the study outcomes can only represent the influence of land use on stormwater toxicity, while the impacts of other factors (particularly rainfall-runoff characteristics) have not been considered. Therefore, the consideration of all influential factors of stormwater is strongly recommended to generate more robust results in the future and provide more effective guidance for real practices related to stormwater reuse safety.
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Affiliation(s)
- Zhifeng Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Chenhao Shi
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - An Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
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10
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Xiao N, Wang Y, Guo Z, Shao T, Dong Z, Xing B. Tire plastic and road-wear particles on Yujing Expressway in the restoration area of Mu Us Sandy Land: Occurrence characteristics and ecological risk screening. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133860. [PMID: 38402682 DOI: 10.1016/j.jhazmat.2024.133860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/20/2024] [Accepted: 02/20/2024] [Indexed: 02/27/2024]
Abstract
Tire plastic and road-wear particles (TPR-WP) are a current research priority as one of the main environmental sources of microplastics. We selected a unique land use type - desert restoration area, collected soil and dust samples from the Yujing Expressway and its service areas, and analyzed TPR-WP abundance, type, size and morphology by laser direct infrared (LDIR). The abundance of TPR-WP in expressway dust (14,446.87 ± 10,234.24 n/kg) was higher than that in soil (7500 ± 3253.64 n/kg). Random forest model showed that the source of TPR-WP was highly correlated with economic factors and natural climate. Overall, the proportion of small and medium-sized TPR-WP in dust was higher than soil, more than half of the TPR-WP in dust were in 20 - 50 µm range. The proportion of small particle size TPR-WP increased with the rise of elevation. The pollution load index suggested that the survey region was generally at level I risk zone, while the ecological risk index indicated that the pollution level of expressway was III and IV, and the service area was IV. In general, the study was of great significance for clarifying the distribution and risk of TPR-WP in soil and dust of expressways and service areas.
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Affiliation(s)
- Na Xiao
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Yanhua Wang
- 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
| | - Tianjie Shao
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Zhibao Dong
- 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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11
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Tomson M, Kumar P, Abhijith KV, Watts JF. Exploring the interplay between particulate matter capture, wash-off, and leaf traits in green wall species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 921:170950. [PMID: 38360301 DOI: 10.1016/j.scitotenv.2024.170950] [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: 02/08/2024] [Accepted: 02/11/2024] [Indexed: 02/17/2024]
Abstract
The study investigated inter-species variation in particulate matter (PM) accumulation, wash-off, and retention on green wall plants, with a focus on leaf characteristics. Ten broadleaf plant species were studied in an experimental green wall. Ambient PM concentrations remained relatively stable throughout the measurement period: PM1: 16.60 ± 9.97 μgm-3, PM2.5: 23.27 ± 11.88 μgm-3, and PM10: 39.59 ± 25.72 μgm-3. Leaf samples were taken before and after three rainfall events, and PM deposition was measured using Scanning Electron Microscopy (SEM). Leaf micromorphological traits, including surface roughness, hair density, and stomatal density, exhibited variability among species and leaf surfaces. Notably, I.sempervirens and H.helix had relatively high PM densities across all size fractions. The study underscored the substantial potential of green wall plants for atmospheric PM removal, with higher Wall Leaf Area Index (WLAI) species like A.maritima and T.serpyllum exhibiting increased PM accumulation at plant level. Rainfall led to significant wash-off for smaller particles, whereas larger particles exhibited lower wash-off rates. Leaf micromorphology impacted PM accumulation, although effects varied among species, and parameters such as surface roughness, stomatal density, and leaf size did not consistently affect PM deposition. The composition of deposited particles encompassed natural, vehicular, salt, and unclassified agglomerates, with minimal changes after rainfall. Air Pollution Tolerance Index (APTI) assessments revealed that I.sempervirens displayed the highest air pollution tolerance, while O.vulgare had the lowest. APTI showed a moderate positive correlation with PM deposition across all fractions. The study concluded that the interplay of macro and micromorphology in green wall plant species determines their PM removal potential. Further research is needed to identify the key leaf characteristics for optimal green wall species selection for effective PM removal.
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Affiliation(s)
- Mamatha Tomson
- Global Centre for Clean Air Research (GCARE), School of Sustainability, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom; Centre for Atmospheric Chemistry, School of Earth, Atmospheric and Life Sciences, University of Wollongong, Northfields Ave, Wollongong, NSW 2522, Australia
| | - Prashant Kumar
- Global Centre for Clean Air Research (GCARE), School of Sustainability, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom; Institute for Sustainability, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom.
| | - K V Abhijith
- Global Centre for Clean Air Research (GCARE), School of Sustainability, Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom
| | - John F Watts
- School of Mechanical Engineering Sciences, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom
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12
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Chae E, Jung U, Choi SS. Types and concentrations of tire wear particles (TWPs) in road dust generated in slow lanes. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 346:123670. [PMID: 38423271 DOI: 10.1016/j.envpol.2024.123670] [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: 12/27/2023] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
Drivers commonly navigate their vehicles at moderate speeds in proximity to traffic lights. In this study, road dust samples were collected in the vicinity of traffic lights, as well as at a taxi stand (TS) situated between traffic lights, with considerations given to both forward direction (FD) and backward direction (BD). The characterization of tire wear particles (TWPs) in the road dust was meticulously conducted based on particle size. Notably, tire-road wear particles (TRWPs) were conspicuously absent in samples surpassing 500 μm. Furthermore, TRWPs comprised less than 1% of identified particles in the road dust samples of 212-500 μm, with their origin traceable to heavy vehicles rather than passenger cars. The abundance of TRWPs from heavy vehicles exhibited marked variations, with heightened prevalence in the TS and BD samples as opposed to the FD sample. For the samples smaller than 212 μm, the composition of natural rubber (NR) in TWPs demonstrated a diminishing trend with escalating particle size. Conversely, the composition of styrene-butadiene rubber (SBR) exhibited an upward trajectory independent of the sampling site. The NR composition ratio in TWPs followed the order: TS (17-55%) > FD (17-47%) > BD (13-36%), while the SBR composition ratio exhibited the sequence: BD (62-86%) > FD (48-79%) > TS (24-70%). The TWP concentrations in road dust obtained from the TS (0.35-0.82%) were discernibly lower than those in the FD (0.54-1.77%) and BD (0.61-1.29%) samples. Specifically, the average TWP concentrations in road dust samples, falling within the size range of 20-212 μm, were 0.45%, 1.06%, and 0.91% for the TS, FD, and BD samples, respectively. These concentrations were lower than the corresponding values observed in samples collected from a bus stop.
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Affiliation(s)
- Eunji Chae
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea
| | - Uiyeong Jung
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea
| | - Sung-Seen Choi
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea.
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De Oliveira T, Muresan B, Ricordel S, Lumière L, Truong XT, Poirier L, Gasperi J. Realistic assessment of tire and road wear particle emissions and their influencing factors on different types of roads. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133301. [PMID: 38141300 DOI: 10.1016/j.jhazmat.2023.133301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/25/2023]
Abstract
This study aims to examine tire and road wear particle (TRWP) emissions under realistic conditions in order to provide some valuable insights into understanding their sources and fate in the environment. TRWP emissions were evaluated with a fully instrumented vehicle driving on five representative road types: urban, ring road, suburban, highway, and rural. Multiple vehicle dynamic variables were recorded to assess the factors influencing these emissions. For the first time, emitted particles were collected on filters and analyzed by means of pyrolysis coupled with gas chromatography-mass spectrometry to determine the polymeric content of tires, in specifically quantifying styrene-butadiene rubber (SBR) and butadiene rubber (BR) pyrolytic markers. The measurements obtained from the five road types revealed similar size distributions for SBR + BR emissions, with maxima found in the (ultra)fine fraction (< 0.39 µm). Upon applying an SBR + BR-to-TRWP conversion factor, (ultra)fine fraction TRWP emissions proved to be the highest for suburban (64 ± 5 µg/km), followed by highway, urban, ring road and rural routes. The output represents up to 480 tons of TRWP per year emitted in the EU27, thus suggesting a widely impregnated atmospheric compartment capable of threatening human health. Furthermore, an analysis of variables revealed that acceleration, tire constraints, and constant sustained driving factors had specific impacts on TRWP emissions.
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14
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Ren Y, Li W, Jia Q, Zhao Y, Qu C, Liu L, Liu J, Wu C. Separation and quantification of tire and road wear particles in road dust samples: Bonded-sulfur as a novel marker. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133089. [PMID: 38016316 DOI: 10.1016/j.jhazmat.2023.133089] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023]
Abstract
Tire road wear particles (TRWPs) are a large source of microplastics in the environment, while the quantification of TRWPs is still challenging due to the complex interferences and the uncertainties and inconsistencies among different methods. This study developed a TRWPs quantification method using optimized pretreatments and bonded-sulfur as marker. Road dust samples (n = 48) were collected, pretreatments including density separation, digestion and extraction were optimized to remove interferences of the bonded-sulfur (minerals, sulfur-containing proteins, hydrosoluble/hydrophobic sulfur-containing substances). Presence of TRWPs in the samples was confirmed by microscopy and scanning electron microscopyenergy dispersive spectrometry. Bonded-sulfur in the samples were quantified by inductively coupled plasmamass spectrometry (ICPMS). Additionally, bonded-sulfur in tire wear particles (TWPs) abraded from tires of top 10 best-selling brands were measured to calculate conversion factor (1.1 ×104 μg/g) for the quantification of TRWPs in real samples. TRWPs contents were 5.40 × 104 μg/g11.02 × 104 μg/g and 2.36 × 104 μg/g5.30 × 104 μg/g in samples from heavy and light traffic roads, respectively. The method provided better recoveries (88-107%, n = 18) and repeatability (RSD=2.0-7.9%, n = 3) compared to methods using rubber, benzothiazole and organic zinc as markers. Furthermore, stability of the bonded-sulfur was validated by Raman and ICPMS. Thus, this accurate and stable quantification method could promote research on TRWPs.
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Affiliation(s)
- Yifan Ren
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenhui Li
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Qi Jia
- China Testing & Certification International Group Co., Ltd., Beijing 100024, China
| | - Yanjun Zhao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Chen Qu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Li Liu
- Beijing University of Chemical Technology, State Key Laboratory of Chemical Resource Engineering, Beijing 100029, China
| | - Jiemin Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Institute of Graphic Communication, Beijing 102600, China
| | - Chuandong Wu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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15
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Chae E, Bae SH, Lee SW, Yun JH, Choi SS. Characteristics of particulate matter from asphalt pavement and tire of a moving bus through driving tests in city road and proving ground. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 344:123336. [PMID: 38211876 DOI: 10.1016/j.envpol.2024.123336] [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: 10/18/2023] [Revised: 01/07/2024] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
Non-exhaust PM emissions from vehicles in real road have been conducted, but heavy vehicles have rarely been tested. In this study, PM2.5 and PM10 samples were directly collected from a tire of a moving bus and the composition was analyzed to investigate the sources of PM emissions. Driving tests were conducted at a proving ground (PG) and a city road (CR). PM2.5 emissions considerably increased when the lateral force of the tire increased and the vehicle accelerated. The PM emission rate was higher in the PG test than in the CR test because of the harsher driving conditions at PG. The emission rates of PM10 in the PG and CR tests were higher than those of PM2.5 by approximately 6 and 11 times, respectively. In the PG and CR tests, the proportions of tire wear particles (TWPs) were 4.9% and 2.1% in the PM2.5 samples, and 6.8% and 8.2% in the PM10 samples, respectively. Furthermore, TWPs with PM (TWPPM) were generated by other sources: secondary production of TWPPM by fragmentation of TWPs and resuspension of TWPPM on the road. The contributions of other sources to TWP2.5 generation were at least 6% and 57% in the PG and CR tests, respectively, whereas that to TWP10 generation was at least 3.5% in the CR test. Iron derived from brake abrasion and mineral particles was observed in the PM samples, and the Fe concentrations were higher in the PM10 samples than in the PM2.5 samples by over 9 and 18 times for the PG and CR tests, respectively. Sulfur sources, such as TWPs, exhaust gas, and bitumen, were observed in the PM samples. Based on our findings, we recommend that road wear particles should be removed from roads to reduce PM emissions upon driving.
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Affiliation(s)
- Eunji Chae
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea
| | - Seok-Hu Bae
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam, 31214, Republic of Korea
| | - Seung-Won Lee
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam, 31214, Republic of Korea
| | - Ju-Ho Yun
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myun, Dongnam-gu, Chonan-si, Chungnam, 31214, Republic of Korea
| | - Sung-Seen Choi
- Department of Chemistry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea.
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16
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Jiao M, Luo Y, Zhang F, Wang L, Chang J, Croué JP, Zhang T. Transformation of 6PPDQ during disinfection: Kinetics, products, and eco-toxicity assessment. WATER RESEARCH 2024; 250:121070. [PMID: 38159542 DOI: 10.1016/j.watres.2023.121070] [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: 10/09/2023] [Revised: 12/22/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
N-phenyl-N'-(1,3-dimethyl butyl)-p-phenylenediamine-quinone (6PPDQ) currently arouses broad concerns because of its acute lethality to coho salmon and rainbow trout at environmentally relevant concentrations and the wide occurrence in runoff-impacted water. Investigation on the fate and transformation of 6PPDQ in various treatment processes is necessary for its risk assessment and control. Here, we explored the transformation of 6PPDQ during disinfection with its precursor 6PPD as a reference, focusing on kinetics, products, and toxicity variation. 6PPDQ readily reacted with hypochlorite and chlorine dioxide with second-order rate constants of 2580 ± 143 M-1 s-1 and 614 ± 52 M-1 s-1 (pH 7.0 and 25 °C), which are slightly lower than the reactions of 6PPD. We tentatively identified thirteen transformation products for 6PPDQ and eight for 6PPD in reaction with the two disinfectants. It seems that the quinone ring of 6PPDQ and the p-phenylenediamine moiety of 6PPD are reactive sites. The transformation of these compounds probably proceeds through Cl-substitution, ring cleavage, hydroxylation, and amine oxidation and hydrolysis. Tests with zebrafish embryos revealed that the transformation products of 6PPDQ could have higher eco-toxicity than the parent compound, while the toxicity of the 6PPD products remained nearly unchanged. The increased toxicity of 6PPDQ during disinfection highlights the necessity to substantially reduce its content before the disinfection of runoff-impacted water.
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Affiliation(s)
- Meng Jiao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yiwen Luo
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fan Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihong Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jing Chang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jean-Philippe Croué
- Institut de Chimie des Milieux et des Matériaux IC2MP UMR 7285 CNRS, Université de Poitiers, France
| | - Tao Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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17
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Ni X, Song J, Lu D, Tong H, Zhou H, Liu Y, Zhan J, Yi X. Effect of bioturbation of the mitten crab on distribution of tire wear particles and their combined effect on sediment ecosystem. CHEMOSPHERE 2024; 346:140603. [PMID: 37918532 DOI: 10.1016/j.chemosphere.2023.140603] [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: 07/22/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/04/2023]
Abstract
Tire wear particles (TWPs) are a major source of environmental microplastic pollution which gradually settle and accumulate in sediments after entering the aquatic environment, which can affect the behaviors of benthic organisms. Bioturbation of benthic species could affect the fate, impacts and potential risks of TWPs by altering the properties and structure of sediments. Therefore, in this study, the effect of TWPs on the burrowing activity of Chinese mitten crab (Eriocheir sinensis) was investigated. In addition, the effects of crab bioturbation on the distribution of TWPs and their additives were studied. The combined effects of TWPs and crab bioturbation on the microbial communities in the sediments were also explored. The results of this study showed that both TWPs and the leachate significantly inhibited the burrowing activity of crabs. TWPs in the surface layer of sediments were re-distributed by crab bioturbation and enriched mainly in the sediments near the burrow walls. Meanwhile, the heavy metals (i.e., Zn, Ca, Mg, Ba and Al) used as additives during the tire production in the burrow walls significantly increased as the accumulation of TWPs near burrow walls. In this study, TWP exposure decreased the bacterial diversity and abundance, as well as the functional genes related to carbon and nitrogen cycling process, but crab bioturbation increased them in the sediments of burrow walls by constructing a unique habitat. However, after TWPs entering into burrows, they were significantly decreased in the sediments near the burrow walls like the effects of TWPs, suggesting the negative effects of TWPs could play a dominant role in this combined system. Overall, this study is important for evaluating the distribution and effects of TWP pollution in the sediment ecosystem under biological factors such as bioturbation.
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Affiliation(s)
- Xiaoming Ni
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Jinbo Song
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Dongliang Lu
- Guangxi Key Laboratory of Marine Environmental Change and Disaster in Beibu Gulf, Qinzhou, Guangxi, China
| | - Huiyan Tong
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Hao Zhou
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Yang Liu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Jingjing Zhan
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China
| | - Xianliang Yi
- School of Ocean Science and Technology, Dalian University of Technology, Panjin Campus, Panjin City, Liaoning, China.
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Zhang Q, Fang T, Men Z, Wei N, Peng J, Du T, Zhang X, Ma Y, Wu L, Mao H. Direct measurement of brake and tire wear particles based on real-world driving conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167764. [PMID: 37832679 DOI: 10.1016/j.scitotenv.2023.167764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
With implementing vehicle emission control policies, tailpipe particulate emissions have been gradually controlled, and the relative contribution of non-tailpipe particulate emissions, such as brake and tire wear, has further increased. A unified and scientific method for sampling non-tailpipe particulate matter (PM) emissions is essential to improve the accuracy of the emission characteristics and factors. This study proposes a novel sampling method based on real-world driving conditions to obtain information on emissions and extract characteristic conditions for tire and brake pad wear. We extracted 200 representative braking segments for simulation experiments based on road type, initial and final velocities, temperature, and deceleration rate. Two standard test cycles to simulate the tire wear conditions of the front and rear wheels were constructed based on velocity, lateral, and vertical forces. Under the real-world driving condition test cycle, the emission factors of PM2.5 and PM10 for brake wear particles of passenger vehicles were 2.66 mg/km and 11.65 mg/km, respectively. In contrast, the emission factors of PM2.5 and PM10 for tire wear particles were 0.21 mg/km and 1.27 mg/km, respectively. Moreover, this study provides insights and basic data for localizing and improving the emission model, which can enhance its applicability and accuracy.
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Affiliation(s)
- Qijun Zhang
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Tiange Fang
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Zhengyu Men
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Ning Wei
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Jianfei Peng
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Tianqiang Du
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Xinfeng Zhang
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Yao Ma
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Lin Wu
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China
| | - Hongjun Mao
- Tianjin Key Laboratory of Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering,Nankai University, Tianjin 300071, China.
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Jeong S, Shin H, Ryu H, Lee MG, Hong J, Kwon JT, Lee J, Kim Y. Rapid estimation of tire-wear particle concentration in road dust using PM 10 and traffic data in a ternary plot. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167227. [PMID: 37734610 DOI: 10.1016/j.scitotenv.2023.167227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/31/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
Air pollution, a pressing global issue, is significantly exacerbated by airborne particulate matter (PM), affecting air quality and human health. Urban vehicular activities majorly contribute to PM rise through both exhaust and non-exhaust emissions. Despite strides in managing exhaust emissions, non-exhaust particles, such as tire wear particles (TWP) remain under-addressed. This research proposes a method for estimating TWP concentrations using PM10 data and traffic activity, which could offer a valuable tool for controlling roadside fine particles and TWP. This paper introduces a ternary plotting technique and step-by-step procedure to estimate TWP levels in road dust using only PM10 and traffic data. Traditional analysis of TWP via pyrolysis-gas chromatography-mass spectrometry is complex and time-consuming. Hence, our proposed approach presents an alternate method that leverages readily accessible PM and traffic data, providing critical information for road management interpretation. The triangular plot analysis demonstrated a linear correlation: [log(Traffic) + 2]-[250,000/TWP-13]-0.18PM10. While the resulting correlation may vary based on specific road conditions, the method can be tailored to different regions, offering insights into efficient estimation of TWP concentrations and promoting improved roadside pollution management.
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Affiliation(s)
- Sohee Jeong
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Hyeokjin Shin
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Hyeongjeong Ryu
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Min Gyu Lee
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Jaehwan Hong
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Jung-Taek Kwon
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon 22733, South Korea
| | - Jaewoong Lee
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon 22733, South Korea
| | - Younghun Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 01897, South Korea.
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Gehrke I, Schläfle S, Bertling R, Öz M, Gregory K. Review: Mitigation measures to reduce tire and road wear particles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166537. [PMID: 37640075 DOI: 10.1016/j.scitotenv.2023.166537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/03/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
The generation of tire wear is an inevitable outcome of the friction between the road and the tire which is necessary for the safe operation of vehicles on roadways. Tire wear particles form agglomerates with road surface material. These agglomerates are called tire and road wear particles (TRWP). Due to their persistence in the environmental compartments and their potentially harmful effects, research on preventative and end-of-pipe mitigation strategies for TRWP is essential. The major goal of this study is to summarize and assess the state of the art in science and technology of mitigation measures for TRWP as the basis for further research activities. Approximately 500 literature sources were found and analyzed in terms of the efficiency, maturity, implementation, and impact of the mitigation measures. Generally, technological and management mitigation measures to reduce the generation of TRWP are beneficial since they prevent TRWP from entering the environment. Once released into environmental compartments, their mobility and dispersion would increase, making removing the particles more challenging. Technological and management mitigation measures after the release of TRWP into the environment are mainly well established in industrialized countries. Street cleaning and wastewater technologies show good removal efficiencies for TRWP and microplastics. In any case, no individual measure can solely solve the TRWP issue, but a set of combined measures could potentially be more effective. The absence of fully-developed and standardized methods for tire abrasion testing and measuring TRWP in the environment makes it impossible to reliably compare the tire abrasion behavior of different tire types, determine thresholds, and control mitigation actions. Field tests and pilot studies are highly needed to demonstrate the effectiveness of the abatement measures under real conditions.
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Affiliation(s)
- Ilka Gehrke
- Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT, Osterfelder Straße 3, 46047 Oberhausen, Germany.
| | - Stefan Schläfle
- Karlsruhe Institute of Technology (KIT), Institute of Vehicle System Technology, Kaiserstraße 12, 76131 Karlsruhe, Germany.
| | - Ralf Bertling
- Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT, Osterfelder Straße 3, 46047 Oberhausen, Germany.
| | - Melisa Öz
- Fraunhofer Institute for Environmental, Safety, and Energy Technology UMSICHT, Osterfelder Straße 3, 46047 Oberhausen, Germany.
| | - Kelvin Gregory
- Carnegie Mellon University, Civil & Environmental Engineering, 5000 Forbes Avenue, Porter Hall 119, Pittsburgh, PA 15213, United States.
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Dupasquier M, Hernandez J, Gonzalez A, Aguirre C, McDonald W. Integrated tire wear buildup and rainfall-runoff model to simulate tire wear particles in stormwater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 346:118958. [PMID: 37716167 DOI: 10.1016/j.jenvman.2023.118958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/18/2023]
Abstract
This paper presents an approach to integrate tire wear buildup and rainfall-runoff models to simulate tire wear buildup on road surfaces and its subsequent transport in stormwater runoff events. To do so, a buildup model is presented based on vehicle kilometers traveled, vehicle type, vehicle speed, and road roughness within a watershed. This buildup model was integrated into an EPA SWMM model that simulated the runoff of tire wear particles in twelve watersheds in the San Francisco, CA bay area. Results demonstrate that tire wear particle buildup within the watersheds ranged between 0.4 and 0.51 (kg/km2) per hour. Applied to the SWMM model, total event mean tire wear concentrations ranged between 0.5 and 67 μg/L. These concentrations were linearly correlated to depth-integrated samples collected at the outlet of each of the watersheds (R2 = 0.66). The proposed modeling approach can ultimately be applied to create solutions to an emerging stormwater contaminant.
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Affiliation(s)
- Matthew Dupasquier
- Civil, Construction and Environmental Engineering Department, Marquette University, 1637 W. Wisconsin Ave., Milwaukee, WI, USA.
| | - Jaime Hernandez
- Civil, Construction and Environmental Engineering Department, Marquette University, 1637 W. Wisconsin Ave., Milwaukee, WI, USA.
| | - Alondra Gonzalez
- Civil, Construction and Environmental Engineering Department, Marquette University, 1637 W. Wisconsin Ave., Milwaukee, WI, USA.
| | - Cesar Aguirre
- Civil, Construction and Environmental Engineering Department, Marquette University, 1637 W. Wisconsin Ave., Milwaukee, WI, USA.
| | - Walter McDonald
- Civil, Construction and Environmental Engineering Department, Marquette University, 1637 W. Wisconsin Ave., Milwaukee, WI, USA.
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22
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Beji A, Deboudt K, Muresan B, Khardi S, Flament P, Fourmentin M, Lumiere L. Physical and chemical characteristics of particles emitted by a passenger vehicle at the tire-road contact. CHEMOSPHERE 2023; 340:139874. [PMID: 37604335 DOI: 10.1016/j.chemosphere.2023.139874] [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: 04/28/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/23/2023]
Abstract
Non-exhaust emissions are now recognized as a significant source of atmospheric particulate matter and the trend towards a reduction of conventionally fueled internal combustion engine vehicles on the road is increasing their contribution to air pollution due to lower exhaust emissions. These particles include brake wear particles (BWP) and tire-road contact particles (TRCP), which are composed of tire wear particles (TWP), road wear particles (RWP) and resuspended road dust (RRD). The goal of this study has therefore been to design an original experimental approach to provide insight into the chemical composition of particles emitted at the tire-road contact, focusing on the micron (PM10-1μm) and submicron (PM1-0.1μm) fractions. Through this characterization, an examination of the different TRCP generated by different materials (tire, road surface, brake system) was conducted. To achieve this, TRCP were collected at the rear of the wheel of an instrumented vehicle during road and track tests, and a SEM-EDX analysis was performed. Our experimental conditions have allowed us to demonstrate that, at the individual particle scale, TRCP are consistently associated with road dust materials and particles solely composed of tire or road materials are practically non-existent. The contribution of BWP to TRCP is marked by the emission of Fe-rich particles, including heavy metals like Ba, Mn and Cr. TWP, which result from rubber abrasion, consist of C-rich particles abundant in Si, Zn, and S. RWP, mainly composed of Al, Si, Fe, and Ca, can be either part of RRD or internally mixed with emitted TWP. The findings of this study highlight the substantial role of RRD to TRCP emissions under real driving conditions. Consequently, it underscores the importance of examining them simultaneously to achieve a more accurate estimation of on-road traffic emissions beyond the vehicle exhaust.
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Affiliation(s)
- Asma Beji
- Laboratory of Physics and Chemistry of the Atmosphere (LPCA), Université du Littoral Côte d'Opale (ULCO), 59140, Dunkerque, France; Environment-Planning, Safety and Eco-design (EASE-AME) Laboratory, Gustave Eiffel University, 77454, Marne-la-Vallée, France
| | - Karine Deboudt
- Laboratory of Physics and Chemistry of the Atmosphere (LPCA), Université du Littoral Côte d'Opale (ULCO), 59140, Dunkerque, France.
| | - Bogdan Muresan
- Environment-Planning, Safety and Eco-design (EASE-AME) Laboratory, Gustave Eiffel University, 77454, Marne-la-Vallée, France
| | - Salah Khardi
- University of Lyon, CNRS, INSA Lyon, LaMCoS, UMR 5259, 69621, Villeurbanne, France
| | - Pascal Flament
- Laboratory of Physics and Chemistry of the Atmosphere (LPCA), Université du Littoral Côte d'Opale (ULCO), 59140, Dunkerque, France
| | - Marc Fourmentin
- Laboratory of Physics and Chemistry of the Atmosphere (LPCA), Université du Littoral Côte d'Opale (ULCO), 59140, Dunkerque, France
| | - Laurence Lumiere
- Environment-Planning, Safety and Eco-design (EASE-AME) Laboratory, Gustave Eiffel University, 77454, Marne-la-Vallée, France
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23
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Guo Q, Men Z, Liu Z, Niu Z, Fang T, Liu F, Wu L, Peng J, Mao H. Chemical characteristics of fine tire wear particles generated on a tire simulator. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122399. [PMID: 37657724 DOI: 10.1016/j.envpol.2023.122399] [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: 03/29/2023] [Revised: 08/09/2023] [Accepted: 08/15/2023] [Indexed: 09/03/2023]
Abstract
Tire wear is one of the major sources of traffic-related particle emissions, however, laboratory data on the components of tire wear particles (TWPs) is scarce. In this study, ten brands of tires, including two types and four-speed grades, were chosen for wear tests using a tire simulator in a closed chamber. The chemical components of PM2.5 were characterized in detail, including inorganic elements, water-soluble ions (WSIs), organic carbon (OC), elemental carbon (EC), and polycyclic aromatic hydrocarbons (PAHs). Inorganic elements, WSIs, OC, and EC accounted for 8.7 ± 2.1%, 3.1 ± 0.7%, 44.0 ± 0.9%, and 9.6 ± 2.3% of the mass of PM2.5, respectively. The OC/EC ratio ranged from 2.8 to 7.6. The inorganic elements were dominated by Si and Zn. The primary ions were SO42- and NO3-, and TWPs were proven to be acidic by applying an ionic balance. The total PAHs content was 113 ± 45.0 μg g-1, with pyrene being dominant. In addition, the relationship between the chemical components and tire parameters was analyzed. Inorganic elements and WSIs in TWPs were more abundant in all-season tires than those in winter tires, whereas the content of PAHs was the opposite. The mass fractions of OC, Si, and Al in the TWPs all showed increasing trends with increasing tire speed grade, but the PAHs levels showed a decreasing trend. Ultimately, to provide more data for further research, a TWPs source profile was constructed considering the tire weighting factor.
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Affiliation(s)
- Quanyou Guo
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Zhengyu Men
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Zhenguo Liu
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Zhihui Niu
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Tiange Fang
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Fengyang Liu
- China Automotive Technology and Research Center Co. Ltd, Tianjin 300300, China
| | - Lin Wu
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
| | - Jianfei Peng
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Hongjun Mao
- Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
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24
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Stack ME, Hollman K, Mladenov N, Harper B, Pinongcos F, Sant KE, Rochman CM, Richardot W, Dodder NG, Hoh E. Micron-size tire tread particles leach organic compounds at higher rates than centimeter-size particles: Compound identification and profile comparison. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122116. [PMID: 37394053 DOI: 10.1016/j.envpol.2023.122116] [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: 04/24/2023] [Revised: 06/12/2023] [Accepted: 06/25/2023] [Indexed: 07/04/2023]
Abstract
Tire tread particles (TTP) are environmentally prevalent microplastics and generate toxic aqueous leachate. We determined the total carbon and nitrogen leachate concentrations and chemical profiles from micron (∼32 μm) and centimeter (∼1 cm) TTP leachate over 12 days. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) were used to measure the concentration of leached compounds. Nontargeted chemical analysis by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC×GC/TOF-MS) was used to compare the chemical profiles of leachates. After leaching for 12 days, DOC was 4.0 times higher in the micron TTP leachate than in the centimeter TTP leachate, and TDN was 2.6 times higher. The total GC×GC/TOF-MS chromatographic feature peak area was 2.9 times greater in the micron TTP leachate than the centimeter TTP leachate, and similarly, the total relative abundance of 54 tentatively identified compounds was 3.3 times greater. We identified frequently measured tire-related chemicals, such as 6PPD, N-cyclohexyl-N'-phenylurea (CPU), and hexa(methoxymethyl)melamine (HMMM), but nearly 50% of detected chemicals were not previously reported in tire literature or lacked toxicity information. Overall, the results demonstrate that smaller TTP have a greater potential to leach chemicals into aquatic systems, but a significant portion of these chemicals are not well-studied and require further risk assessment.
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Affiliation(s)
- M E Stack
- San Diego State University Research Foundation, San Diego, CA, 92182, USA
| | - K Hollman
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA, 92182, USA
| | - N Mladenov
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA, 92182, USA
| | - B Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, 97331, USA
| | - F Pinongcos
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA, 92182, USA
| | - K E Sant
- School of Public Health, San Diego State University, San Diego, CA, 92182, USA
| | - C M Rochman
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
| | - W Richardot
- San Diego State University Research Foundation, San Diego, CA, 92182, USA
| | - N G Dodder
- San Diego State University Research Foundation, San Diego, CA, 92182, USA
| | - E Hoh
- School of Public Health, San Diego State University, San Diego, CA, 92182, USA.
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25
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Li K, Su H, Xiu X, Liu C, Hao W. Tire wear particles in different water environments: occurrence, behavior, and biological effects-a review and perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:90574-90594. [PMID: 37481496 DOI: 10.1007/s11356-023-28899-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 07/17/2023] [Indexed: 07/24/2023]
Abstract
As an important source of microplastics, the water ecological risk of tire wear particles (TWPs) has attracted widespread attention worldwide. However, the occurrence and behavior of TWPs and their biological effects in water environments have not been clearly analyzed. For example, most contemporary studies have focused on the evaluation of the aquatic toxicity of TWPs leachate, and little attention has been paid to the behavior process and potential risks of its surface properties in water environments. In addition, most studies rely on preparing TWPs under laboratory conditions or purchasing commercial TWPs for studying their water environmental behavior or exposure. These obviously cannot meet the requirements of accurate assessment of water ecological risks of TWPs. As thus, in addition to describing the occurrence, distribution, and (aging) transformation of TWPs in different water environments, we further tried to explain the potential water environment behavior process and multiple pathways leading to potential adverse impacts of TWPs on aquatic organisms from the perspectives of particle self-toxicity and release toxicity, as well as synergistic effects of TWPs and other substances are also discussed. The existing data, such as studies on the self-characteristics of TWPs, environmental factors, and subjects, are insufficient to comprehensively evaluate the recent changes in essential water ecosystem services and multifunctions caused by TWPs, implying that the impact of TWPs on water environmental health needs to be further evaluated, and the corresponding countermeasures should be recommended. In this context, the current review provides an outlook on future research on TWPs in aquatic environments.
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Affiliation(s)
- Kun Li
- School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing, China.
| | - Han Su
- Changwang School of Honors, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Xiaojia Xiu
- Changwang School of Honors, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Chi Liu
- School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing, China
| | - Wanqi Hao
- School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing, China
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26
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Ha JU, Bae SH, Choi YJ, Lee PC, Jeoung SK, Song S, Choi C, Lee JS, Kim J, Han IS. Control of Tire Wear Particulate Matter through Tire Tread Prescription. Polymers (Basel) 2023; 15:2795. [PMID: 37447442 DOI: 10.3390/polym15132795] [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: 05/15/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
This study aims to analyze tire wear particulate matter (TWP) from tread rubber with different formulations and to compare the concentration of TWP with different wear devices. The TWP generated during the abrasion of truck and bus radial (TBR) tires were examined, and the effect of using different types of rubber and carbon black (CB) were investigated. When natural rubber (NR) was solely used as the tire tread rubber material, there was a higher concentration of 5-10 µm TWP. However, when the tread formulation consisted of NR mixed with butadiene rubber, the TWP concentration decreased. Changing the type of CB also reduced the amount of TWP in the 2.5 µm size range. The TWP concentration in the specimens increased with increasing speed and vertical load. The TWP generated during the abrasion tests using wear testers and tire simulators exhibited similar trends. These findings suggest that modifying tire tread formulations can effectively control the distribution and amount of TWP generation.
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Affiliation(s)
- Jin U Ha
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea
| | - Seok H Bae
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea
| | - Yu J Choi
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea
| | - Pyoung-Chan Lee
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea
| | - Sun K Jeoung
- Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, Cheonan-si 31214, Republic of Korea
| | - Sanghoon Song
- School of Chemical Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Choong Choi
- R&D Department, Hankook Tire & Technology, Daejeon 34127, Republic of Korea
| | - Jae S Lee
- R&D Department, OCI, Sungnam-si 13212, Republic of Korea
| | - Jaeyun Kim
- R&D Department, Kumho Petrochemical, Daejeon 34044, Republic of Korea
| | - In S Han
- Interior & Exterior Materials Development Team, Hwaseong-si 18280, Republic of Korea
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27
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Rosso B, Gregoris E, Litti L, Zorzi F, Fiorini M, Bravo B, Barbante C, Gambaro A, Corami F. Identification and quantification of tire wear particles by employing different cross-validation techniques: FTIR-ATR Micro-FTIR, Pyr-GC/MS, and SEM. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121511. [PMID: 36967009 DOI: 10.1016/j.envpol.2023.121511] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/21/2023] [Accepted: 03/23/2023] [Indexed: 06/18/2023]
Abstract
Tire wear particles (TWPs) are one of the environment's most important emission sources of microplastics. In this work, chemical identification of these particles was carried out in highway stormwater runoff through cross-validation techniques for the first time. Optimization of a pre-treatment method (i.e., extraction and purification) was provided to extract TWPs, avoiding their degradation and denaturation, to prevent getting low recognizable identification and consequently underestimates in the quantification. Specific markers were used for TWPs identification comparing real stormwater samples and reference materials via FTIR-ATR, Micro-FTIR, and Pyrolysis-gas-chromatography-mass spectrometry (Pyr-GC/MS). Quantification of TWPs was carried out via Micro-FTIR (microscopic counting); the abundance ranged from 220,371 ± 651 TWPs/L to 358,915 ± 831 TWPs/L, while the higher mass was 39,6 ± 9 mg TWPs/L and the lowest 31,0 ± 8 mg TWPs/L. Most of the TWPs analyzed were less than 100 μm in size. The sizes were also confirmed using a scanning electron microscope (SEM), including the presence of potential nano TWPs in the samples. Elemental analysis via SEM supported that a complex mixture of heterogeneous composition characterizes these particles by agglomerating organic and inorganic particles that could derive from brake and road wear, road pavement, road dust, asphalts, and construction road work. Due to the analytical lack of knowledge about TWPs chemical identification and quantification in scientific literature, this study significantly contributes to providing a novel pre-treatment and analytical methodology for these emerging contaminants in highway stormwater runoff. The results of this study highlight the uttermost necessity to employ cross-validation techniques, i.e., FTIR-ATR, Micro-FTIR, Pyr-GC/MS, and SEM for the TWPs identification and quantification in the real environmental samples.
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Affiliation(s)
- Beatrice Rosso
- Department of Environmental Sciences, Informatics, and Statistics; Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy.
| | - Elena Gregoris
- Department of Environmental Sciences, Informatics, and Statistics; Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy; Institute of Polar Sciences, CNR-ISP; Campus Scientifico - Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy.
| | - Lucio Litti
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy.
| | - Federico Zorzi
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; CEASC (Centro di Analisi e Servizi per la Certificazione), University of Padova, Via Jappelli 1a, 35121 Padova, Italy.
| | - Maurizio Fiorini
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, Bologna (BO), Italy.
| | - Barbara Bravo
- Thermo Fisher Scientific, Str. Rivoltana, Km 4 - 20090 Rodano (MI), Italy.
| | - Carlo Barbante
- Department of Environmental Sciences, Informatics, and Statistics; Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy; Institute of Polar Sciences, CNR-ISP; Campus Scientifico - Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy.
| | - Andrea Gambaro
- Department of Environmental Sciences, Informatics, and Statistics; Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy; Institute of Polar Sciences, CNR-ISP; Campus Scientifico - Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy.
| | - Fabiana Corami
- Department of Environmental Sciences, Informatics, and Statistics; Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy; Institute of Polar Sciences, CNR-ISP; Campus Scientifico - Ca' Foscari University of Venice, Via Torino, 155, 30172, Venezia-Mestre, Italy.
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28
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O'Brien S, Rauert C, Ribeiro F, Okoffo ED, Burrows SD, O'Brien JW, Wang X, Wright SL, Thomas KV. There's something in the air: A review of sources, prevalence and behaviour of microplastics in the atmosphere. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 874:162193. [PMID: 36828069 DOI: 10.1016/j.scitotenv.2023.162193] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Literature regarding microplastics in the atmosphere has advanced in recent years. However, studies have been undertaken in isolation with minimal collaboration and exploration of the relationships between air, deposition and dust. This review collates concentrations (particle count and mass-based), shape, size and polymetric characteristics for microplastics in ambient air (m3), deposition (m2/day), dust (microplastics/g) and snow (microplastics/L) from 124 peer-reviewed articles to provide a holistic overview and analysis of our current knowledge. In summary, ambient air featured concentrations between <1 to >1000 microplastics/m3 (outdoor) and <1 microplastic/m3 to 1583 ± 1181 (mean) microplastics/m3 (indoor), consisting of polyethylene terephthalate, polyethylene, polypropylene. No difference (p > 0.05) was observed between indoor and outdoor concentrations or the minimum size of microplastics (p > 0.5). Maximum microplastic sizes were larger indoors (p < 0.05). Deposition concentrations ranged between 0.5 and 1357 microplastics/m2/day (outdoor) and 475 to 19,600 microplastics/m2/day (indoor), including polyethylene, polystyrene, polypropylene, polyethylene terephthalate. Concentrations varied between indoor and outdoor deposition (p < 0.05), being more abundant indoors, potentially closer to sources/sinks. No difference was observed between the minimum or maximum reported microplastic sizes within indoor and outdoor deposition (p > 0.05). Road dust concentrations varied between 2 ± 2 and 477 microplastics/g (mean), consisting of polyvinyl chloride, polyethylene, polypropylene. Mean outdoor dust concentrations ranged from <1 microplastic/g (remote desert) to between 18 and 225 microplastics/g, comprised of polyethylene terephthalate, polyamide, polypropylene. Snow concentrations varied between 0.1 and 30,000 microplastics/L, containing polyethylene, polyamide, polypropylene. Concentrations within indoor dust varied between 10 and 67,000 microplastics/g, including polyethylene terephthalate, polyethylene, polypropylene. No difference was observed between indoor and outdoor concentrations (microplastics/g) or maximum size (p > 0.05). The minimum size of microplastics were smaller within outdoor dust (p > 0.05). Although comparability is hindered by differing sampling methods, analytical techniques, polymers investigated, spectral libraries and inconsistent terminology, this review provides a synopsis of knowledge to date regarding atmospheric microplastics.
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Affiliation(s)
- Stacey O'Brien
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia.
| | - Cassandra Rauert
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Francisca Ribeiro
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia; College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope Building, EX4 4QD, Stocker Road, Exeter, UK
| | - Elvis D Okoffo
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Stephen D Burrows
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia; College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope Building, EX4 4QD, Stocker Road, Exeter, UK
| | - Jake W O'Brien
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Xianyu Wang
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Stephanie L Wright
- MRC Centre for Environment and Health, Imperial College London, London SE1 9NH, UK; National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Environmental Exposures and Health, Imperial College London, London SW7 2AZ, UK
| | - Kevin V Thomas
- Queensland Alliance of Environmental Health Sciences, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
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29
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Shin H, Jeong S, Hong J, Wi E, Park E, Yang SI, Kwon JT, Lee H, Lee J, Kim Y. Rapid generation of aged tire-wear particles using dry-, wet-, and cryo-milling for ecotoxicity testing. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 330:121787. [PMID: 37156438 DOI: 10.1016/j.envpol.2023.121787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/10/2023]
Abstract
Strict environmental laws have been enacted to regulate the emission of exhaust particulate matter (PM), which is one of the most hazardous pollutants that reduce air quality and pose a serious risk to the human health. In addition, non-exhaust PM, such as road wear, tire wear, and brake wear debris, is a significant source of airborne pollutants. Road dust less than 100 μm in size may include tire wear particles (TWPs), which are broken down into finer particles with sizes on the order of tens of micrometers because of weathering. TWPs can be transported to water bodies via runoff, potentially contaminating water systems and negatively affecting aquatic ecosystems. Therefore, ecotoxicity tests using reference TWPs are required to investigate the impact of TWPs on the human health and environment. In this study, aged TWPs were produced using dry-, wet-, and cryo-milling methods, and the dispersion stability of TWPs in dechlorinated water was evaluated. Aged TWPs prepared by dry- and wet-milling had an average particle size of 20 μm, whereas pristine TWPs had an irregular shape and average particle size of 100 μm. The capacity of the ball-milling cylinder and excessively long 28-d generation time constrain the amount of aged TWPs that can be produced through conventional milling. In contrast, cryo-milling reduces the particle size of TWPs at the rate of -275.0 μm/d, which is nine times higher than that upon dry- and wet-milling. Dispersed cryo-milled TWPs had a hydrodiameter of 2.02 μm and were more stable in the aqueous phase in relation to the other aged TWPs. The results of this study suggest that cryo-milled TWPs can be used for aquatic exposure assessments as controls for real-world TWPs.
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Affiliation(s)
- Hyeokjin Shin
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Sohee Jeong
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Jaehwan Hong
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Eunsoo Wi
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Eunhae Park
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea
| | - Sung Ik Yang
- Department of Applied Chemistry, Kyung Hee University, Yongin, 17104, South Korea
| | - Jung-Taek Kwon
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, 22733, South Korea
| | - Hyejin Lee
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, 22733, South Korea
| | - Jaewoong Lee
- Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, 22733, South Korea
| | - Younghun Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea.
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30
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Charbouillot T, Janet DC, Schaal P, Beynier I, Boulat JM, Grandchamp A, Biesse F. Methodology for the direct measurement of tire emission factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:160853. [PMID: 36526208 DOI: 10.1016/j.scitotenv.2022.160853] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
A reduction in air pollution is an essential step toward decreasing certain health risks in urban area populations. Road traffic is one source of this pollution and can be categorized into exhaust and non-exhaust emissions (NEE). Non-exhaust emissions include, but are not limited to, brake wear particles and Tire Road Wear Particles (TRWP). Emission Factors are often used to assess the share and the amount of vehicle exhaust and non-exhaust particles in the air. In this study, we developed an approach to measure the Emission Factors (EF) of tire Particulate Matter (PM). The approach is based an experimental method allowing for direct measurements in real conditions (on a vehicle on the road). The experimental set-up as well as the measurement protocol lead to a significant reduction in the classical biases of the on-road approach, which usually lead to a large over-estimation of the amount of PM10 and PM2.5 emitted by the tire. We observed that TRWP emissions correlate in time with the tire solicitation. A careful computation from the PM10 and PM2.5 collected by a real time particle counter enables an evaluation of the total amount of TRWP contributing to air pollution. The average results indicate an Emission Factor for PM10 4.5 times lower than the EMEP guidebook value and 42 times lower for PM2.5. This discrepancy calls for further tests to confirm the results.
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Affiliation(s)
- Tiffany Charbouillot
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Dominique Cettour Janet
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Pierre Schaal
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Ingrid Beynier
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Jean-Marie Boulat
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Adrien Grandchamp
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France
| | - Frédéric Biesse
- Michelin, Research Center Ladoux, 23 place des Carmes Déchaux, 63040 Clermont Ferrand Cedex 09, France.
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31
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Poma A, Aloisi M, Bonfigli A, Colafarina S, Zarivi O, Aimola P, Vecchiotti G, Arrizza L, Di Cola A, Cesare P. Particle Debris Generated from Passenger Tires Induces Morphological and Gene Expression Alterations in the Macrophages Cell Line RAW 264.7. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:756. [PMID: 36839124 PMCID: PMC9959278 DOI: 10.3390/nano13040756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/10/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Air pollution in the urban environment is a topical subject. Aero-suspended particles can cause respiratory diseases in humans, ranging from inflammation to asthma and cancer. One of the components that is most prevalent in particulate matter (PM) in urban areas is the set of tire microparticles (1-20 μm) and nanoparticles (<1 μm) that are formed due to the friction of wheels with asphalt and are increased in slow-moving areas that involve a lot of braking actions. In this work, we studied the effect that microparticles generated from passenger tires (PTWP, passenger tire wear particles) have in vitro on murine macrophages cells RAW 264.7 at two concentrations of 25 and 100 μg/mL, for 24 and 48 h. In addition to the chemical characterization of the material and morphological characterization of the treated cells by transmission electron microscopy, gene expression analysis with RT-PCR and active protein analysis with Western blotting were performed. Growth curves were obtained, and the genotoxic effect was evaluated with a comet assay. The results indicate that initially, an induction of the apoptotic process is observable, but this is subsequently reversed by Bcl2. No genotoxic damage is present, but mild cellular abnormalities were observed in the treated cells.
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Affiliation(s)
- Anna Poma
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Massimo Aloisi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Antonella Bonfigli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Sabrina Colafarina
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Osvaldo Zarivi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Pierpaolo Aimola
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Giulia Vecchiotti
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Lorenzo Arrizza
- Center for Microscopy, University of L’Aquila, 67100 L’Aquila, Italy
| | | | - Patrizia Cesare
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
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32
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Woo SH, Jang H, Lee SB, Lee S. Comparison of total PM emissions emitted from electric and internal combustion engine vehicles: An experimental analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156961. [PMID: 35760182 DOI: 10.1016/j.scitotenv.2022.156961] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Electric vehicles (EVs) are regarded as zero emission vehicles due to the absence of exhaust emissions. However, they still contribute non-exhaust particulate matter (PM) emissions, generated by brake wear, tire wear, road wear, and resuspended road dust. In fact, because EVs are heavier than internal combustion engine vehicles (ICEVs), their non-exhaust emissions are like to be even higher. While total PM emissions, including exhaust and non-exhaust PM emissions, from ICEVs and EVs have been compared based on the emission factors (EFs) listed in national emission inventories, there have been no comparisons based on experimental determinations. In this study, exhaust and non-exhaust emissions generated from a gasoline ICEV, diesel ICEV, and EV were experimentally investigated. The results showed that the EFs for the total PM emissions of ICEVs and EV were dependent on the inclusion of secondary exhaust PM, the brake pad type, and the regenerative braking intensity of the EV. When only primary exhaust PM emissions were considered in vehicles equipped with non-asbestos organic (NAO) brake pads, the total PM10 EF of the EV (47.7-49.3 mg/V·km) was 10-17 % higher than those of the gasoline ICEV (42.3 mg/V·km) and diesel ICEV (43.2 mg/V·km). However, in vehicles equipped with low-metallic (LM) brake pads, the total PM10 EF of the EV (49.2-57.7 mg/V·km) was comparable or lower than those of the gasoline ICEV (56.3 mg/V·km) and diesel ICEV (57.2 mg/V·km). When secondary PM emissions were included, the EF was always significantly lower for the EV than ICEVs. The total PM10 EF of the EV (47.7-57.7 mg/V·km) was lower than those of the gasoline ICEV (56.5-70.5 mg/V·km) and diesel ICEV (58.0-72.0 mg/V·km). Since secondary PM particles are mostly of submicron size, the EFs of the PM2.5 fraction of the ICEVs (28.7-33.0 mg/V·km) were two times higher than those of the EV (13.9-17.4 mg/V·km).
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Affiliation(s)
- Sang-Hee Woo
- Department of Mobility Power Research, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Hyungjoon Jang
- Department of Mobility Power Research, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Seung-Bok Lee
- Center for Sustainable Environment Research, Korea Institute of Science and Technology, 14-gil 5 Hwarang-ro, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Seokhwan Lee
- Department of Mobility Power Research, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.
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33
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Liu Y, Chen H, Wu S, Gao J, Li Y, An Z, Mao B, Tu R, Li T. Impact of vehicle type, tyre feature and driving behaviour on tyre wear under real-world driving conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156950. [PMID: 35753475 DOI: 10.1016/j.scitotenv.2022.156950] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 05/27/2023]
Abstract
Tyre wear generates not only large pieces of microplastics but also airborne particle emissions, which have attracted considerable attention due to their adverse impacts on the environment, human health, and the water system. However, the study on tyre wear is scarce in real-world driving conditions. In the present study, the left-front and left-rear tyre wear in terms of volume lost in mm3 of 76 taxi cars was measured about every three months. This study covered 22 months from September 2019 to June 2021 and included more than 500 measurements in total. Some of the data was used to evaluate the effects of vehicle type and tyre type on tyre wear. In addition, a machine learning method (i.e., Extreme gradient boosting (XGBoost)) was used to probe the effect of driving behaviour on tyre wear by monitoring real-time driving behaviour. The current statistical results showed that, on average, the tyre wear was 72 mg veh-1 km-1 for a hybrid car and 53 mg veh-1 km-1 for a conventional internal combustion engine car. The average tyre wear measured for a taxi vehicle configuration featuring winter tyres was 160 mg veh-1 km-1, which was 1.4 and 3.0 times as much as those with all-season tyres and summer tyres, respectively. The wear rate of left-front tyres was 1.7 times higher than that of left-rear tyres. The XGBoost results indicated that compared to driving behaviour, tyre type and tyre position had more important effects on tyre wear. Among driving behaviours, braking and accelerating events presented the most considerable impact on tyre wear, followed by cornering manoeuvres and driving speed. Thus, it seems that limiting harsh braking and acceleration has the potential to reduce tyre wear significantly.
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Affiliation(s)
- Ye Liu
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK.
| | - Haibo Chen
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK.
| | - Sijin Wu
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK; Department of Statistics and Data Science, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Jianbing Gao
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK
| | - Ying Li
- Dynnoteq, 61 Bridge Street, Kington HR5 3DJ, UK
| | - Zihao An
- Institute for Transport Studies, University of Leeds, Leeds LS2 9JT, UK
| | - Baohua Mao
- Integrated Transport Research Center of China, Beijing Jiaotong University, Beijing 100044, China
| | - Ran Tu
- School of Transportation, Southeast University, Nanjing 210096, China
| | - Tiezhu Li
- School of Transportation, Southeast University, Nanjing 210096, China
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34
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Spanheimer V, Katrakova-Krüger D. Analysis of tire wear airstrip particles (TWAP). Sci Rep 2022; 12:15841. [PMID: 36151229 PMCID: PMC9508263 DOI: 10.1038/s41598-022-19986-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/07/2022] [Indexed: 11/09/2022] Open
Abstract
Tire wear is a main contributor to microplastics. As we cannot fully avoid tire wear, otherwise we could not brake and stop, new solutions are needed to address this problem. Not only on roads tire wear is released to the environment, even more can be found at airports. The advantage there is that the Tire Wear Airstrip Particles are gathered while cleaning the pavement. This collection is an opportunity to recycle and add new value to it. Whereas rubber powder is a common way to recycle and reuse end-of-life-tires as raw material in rubber compounds, the question is if TWAP is reusable in the same or similar way. In this study TWAP and rubber powder from truck tire treads are analyzed and compared with regard to their morphology, particle size distribution and composition. The particle size distribution of TWAP is broader than rubber powder containing also much smaller particles. The mineral content of TWAP is about 60%. These minerals can be residues of the pavement, brake wear but also rubber ingredients. In comparison to rubber powder, the impurities of TWAP are expected to have an impact with regard to potential applications and should be better separated.
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35
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Shin H, Sukumaran V, Yeo IC, Shim KY, Lee S, Choi HK, Ha SY, Kim M, Jung JH, Lee JS, Jeong CB. Phenotypic toxicity, oxidative response, and transcriptomic deregulation of the rotifer Brachionus plicatilis exposed to a toxic cocktail of tire-wear particle leachate. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129417. [PMID: 35779397 DOI: 10.1016/j.jhazmat.2022.129417] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/16/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
Tire-wear particles (TWPs) are potential source of microplastic (MP) pollution in marine environments. Although the hazardous effects of MPs on marine biota have received considerable attention, the toxicity of TWPs and associated leachates remain poorly understood. Here, to assess the toxicity of TWP leachate and the underlying mechanisms of toxicity, the phenotypic and transcriptomic responses of the rotifer Brachionus plicatilis were assessed with chemistry analysis of a TWP leachate. Although acute toxicity was induced, and a variety of metals and polyaromatic hydrocarbons were detected in the leachate, levels were below the threshold for acute toxicity. The results of particle analysis suggest that the acute toxicity observed in our study is the result of a toxic cocktail of micro- and/or nano-sized TWPs and other additives in TWP leachate. The adverse effects of TWP leachate were associated with differential expression of genes related to cellular processes, stress response, and impaired metabolism, with further oxidative stress responses. Our results imply that TWPs pose a greater threat to marine biota than other plastic particles as they constitute a major source of nano- and microplastics that have synergistic effects with the additives contained in TWP leachate.
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Affiliation(s)
- Heesang Shin
- Department of Marine Science, Incheon National University, Incheon 22012, Republic of Korea
| | - Vrinda Sukumaran
- Department of Marine Science, Incheon National University, Incheon 22012, Republic of Korea
| | - In-Cheol Yeo
- Department of Marine Science, Incheon National University, Incheon 22012, Republic of Korea
| | - Kyu-Young Shim
- Department of Marine Science, Incheon National University, Incheon 22012, Republic of Korea
| | - Seokhwan Lee
- Department of Engine Researach, Korea Institute of Machinery and Materials, Daejeon 34103, Republic of Korea
| | - Han-Kyu Choi
- Department of Chemistry, Kunsan National University, Gunsan 54150, Republic of Korea
| | - Sung Yong Ha
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Moonkoo Kim
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jee-Hyun Jung
- Risk Assessment Research Center, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Jae-Seong Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Chang-Bum Jeong
- Department of Marine Science, Incheon National University, Incheon 22012, Republic of Korea.
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36
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Woo SH, Jang H, Mun SH, Lim Y, Lee S. Effect of treadwear grade on the generation of tire PM emissions in laboratory and real-world driving conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156548. [PMID: 35688251 DOI: 10.1016/j.scitotenv.2022.156548] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/23/2022] [Accepted: 06/04/2022] [Indexed: 06/15/2023]
Abstract
Tires generally wear out due to the friction between the tire and the road surface. Minimizing tire wear could reduce the non-exhaust particulate matter (PM) emissions from tires. Typically, tire treadwear grade can be used as an indicator of PM emissions from tires. Tires that wear out quickly will produce higher PM emissions than more durable tires. In this study, the effect of treadwear grade on the generation of tire PM emissions was investigated through laboratory and on-road driving measurements. In the laboratory measurements, a tire wear simulator installed in an enclosed chamber was used to eliminate artifacts caused by interfering particles during the generation and measurement of tire wear particles. For realistic on-road driving measurements, a mobile sampling vehicle was employed to sample road dust. The road dust was chemically analyzed using pyrolysis gas chromatography-mass spectrometry (GC-MS) to characterize the tire-road wear particles. Both measurements showed that the higher treadwear grade generated lower tire PM emissions due to the high strength of the rubber, except for the UTQG 700 tire. The UTQG 700 tire, which had the highest treadwear grade, produced higher PM emissions than the UTQG 350 and 500 tires because it readily formed the fine particles due to lamellar peeling rather than tearing or curling of tire treads. Notably, tire nanoparticles were observed in laboratory measurements due to the volatilization and nucleation of the sulphur (S) and zinc (Zn) compounds in the tire tread due to the frictional heat between the tire and paved road surface.
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Affiliation(s)
- Sang-Hee Woo
- Environment System Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Hyungjoon Jang
- Environment System Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea
| | - Sun-Hee Mun
- Transportation Pollution Research Center, National Institute of Environmental Research, 42, Hwangyong-ro, Seo-gu, Incheon 22689, Republic of Korea
| | - Yunsung Lim
- Transportation Pollution Research Center, National Institute of Environmental Research, 42, Hwangyong-ro, Seo-gu, Incheon 22689, Republic of Korea
| | - Seokhwan Lee
- Environment System Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea.
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37
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Fussell JC, Franklin M, Green DC, Gustafsson M, Harrison RM, Hicks W, Kelly FJ, Kishta F, Miller MR, Mudway IS, Oroumiyeh F, Selley L, Wang M, Zhu Y. A Review of Road Traffic-Derived Non-Exhaust Particles: Emissions, Physicochemical Characteristics, Health Risks, and Mitigation Measures. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:6813-6835. [PMID: 35612468 PMCID: PMC9178796 DOI: 10.1021/acs.est.2c01072] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/29/2022] [Accepted: 05/10/2022] [Indexed: 05/22/2023]
Abstract
Implementation of regulatory standards has reduced exhaust emissions of particulate matter from road traffic substantially in the developed world. However, nonexhaust particle emissions arising from the wear of brakes, tires, and the road surface, together with the resuspension of road dust, are unregulated and exceed exhaust emissions in many jurisdictions. While knowledge of the sources of nonexhaust particles is fairly good, source-specific measurements of airborne concentrations are few, and studies of the toxicology and epidemiology do not give a clear picture of the health risk posed. This paper reviews the current state of knowledge, with a strong focus on health-related research, highlighting areas where further research is an essential prerequisite for developing focused policy responses to nonexhaust particles.
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Affiliation(s)
- Julia C. Fussell
- National
Institute for Health Research Health Protection Research Unit in Environmental
Exposures and Health, School of Public Health, Imperial College London, London, W12 0BZ, U.K.
| | - Meredith Franklin
- Department
of Statistical Sciences, University of Toronto, Toronto, Ontario M5G 1Z5, Canada
| | - David C. Green
- National
Institute for Health Research Health Protection Research Unit in Environmental
Exposures and Health, School of Public Health, Imperial College London, London, W12 0BZ, U.K.
| | - Mats Gustafsson
- Swedish
National Road and Transport Research Institute (VTI), SE-581 95, Linköping, Sweden
| | - Roy M. Harrison
- School
of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, U.K.
- Department
of Environmental Sciences / Centre of Excellence in Environmental
Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - William Hicks
- National
Institute for Health Research Health Protection Research Unit in Environmental
Exposures and Health, School of Public Health, Imperial College London, London, W12 0BZ, U.K.
| | - Frank J. Kelly
- National
Institute for Health Research Health Protection Research Unit in Environmental
Exposures and Health, School of Public Health, Imperial College London, London, W12 0BZ, U.K.
| | - Franceska Kishta
- Centre
for Cardiovascular Science, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, EH16 4TJ, U.K.
| | - Mark R. Miller
- Centre
for Cardiovascular Science, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, EH16 4TJ, U.K.
| | - Ian S. Mudway
- National
Institute for Health Research Health Protection Research Unit in Environmental
Exposures and Health, School of Public Health, Imperial College London, London, W12 0BZ, U.K.
| | - Farzan Oroumiyeh
- Department
of Environmental Health Sciences, Jonathan and Karin Fielding School
of Public Health, University of California,
Los Angeles, Los Angeles, California 90095, United States
| | - Liza Selley
- MRC
Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Road, Cambridge,CB2 1QR, U.K.
| | - Meng Wang
- University
at Buffalo, School of Public
Health and Health Professions, Buffalo, New York 14214, United States
| | - Yifang Zhu
- Department
of Environmental Health Sciences, Jonathan and Karin Fielding School
of Public Health, University of California,
Los Angeles, Los Angeles, California 90095, United States
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38
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Chemical Leaching from Tire Wear Particles with Various Treadwear Ratings. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19106006. [PMID: 35627543 PMCID: PMC9141276 DOI: 10.3390/ijerph19106006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 01/27/2023]
Abstract
Physical friction between a tire and the road surface generates tire wear particles (TWPs), which are a source of microplastics and particulate matter. This study investigated the trends of chemical leaching from TWPs depending on the treadwear rating of the tire. A road simulator was used to produce TWPs from tires with various treadwear ratings. Liquid chromatography–tandem mass spectrometry was used to analyze the chemical leaching from TWPs, with a particular focus on benzothiazole and its derivative 2-hydroxy benzothiazole. However, chemical mapping via high-resolution tandem mass spectrometry detected another derivative: 2-mercaptobenzothiazole. The benzothiazole groups were observed to have different leaching tendencies, implying that using benzothiazole as a marker compound may lead to incorrect TWP quantitation. The results of this research also suggest that the ecotoxicological influence of TWPs can vary with the treadwear rating of a tire.
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39
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Mattonai M, Nacci T, Modugno F. Analytical strategies for the quali-quantitation of tire and road wear particles – A critical review. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Wagner S, Klöckner P, Reemtsma T. Aging of tire and road wear particles in terrestrial and freshwater environments - A review on processes, testing, analysis and impact. CHEMOSPHERE 2022; 288:132467. [PMID: 34624341 DOI: 10.1016/j.chemosphere.2021.132467] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/27/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
The environmental fate of tire and road wear particles (TRWPs) receives increasing attention due to the per capita emission volumes of 0.2-5.5 kg/(cap year) and recent reports on the environmental hazard of TRWP constituents. It is expected that aging impacts TRWPs fate in the environment but detailed knowledge is quite limited, yet. Making use of information on tire aging, the available knowledge on environmental aging processes such as thermooxidation, photooxidation, ozonolysis, shear stress, biodegradation and leaching is reviewed here. Experimental techniques to simulate aging are addressed as are analytical techniques to determine aging induced changes of TRWPs, covering physical and chemical properties. The suitability of various tire wear test materials is discussed. Findings and methods from tire aging can be partially applied to study aging of TRWPs in the environment. There is a complex interplay between aging processes in the environment that needs to be considered in future aging studies. In addition to existing basic qualitative understanding of the aging processes, quantitative understanding of TRWP aging is largely lacking. Aging in the environment needs to consider the TRWPs as well as chemicals released. Next steps for filling the gaps in knowledge on aging of TRWPs in the environment are elaborated.
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Affiliation(s)
- Stephan Wagner
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany; Hochschule für Angewandte Wissenschaften Hof, Institut für Wasser und Energiemanagement, Alfons-Goppel-Platz 1, 95028, Hof, Germany.
| | - Philipp Klöckner
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany; Umweltbundesamt, Wörlitzer Platz 1, 06844, Dessau-Roßlau, Germany
| | - Thorsten Reemtsma
- Helmholtz Centre for Environmental Research - UFZ, Department of Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany; University of Leipzig, Institute for Analytical Chemistry, Linnéstrasse 3, 04103, Leipzig, Germany.
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41
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Ha JU, Lee HH, Ryu G, Lee P, Ko YK, Jeoung SK. Trends in particulate matter generation from truck and bus radial tires using a wear tester. J Appl Polym Sci 2022. [DOI: 10.1002/app.52190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jin Uk Ha
- Materials Technology R&D Division Korea Automotive Technology Institute Chungnam South Korea
| | - Hyun Hee Lee
- Materials Technology R&D Division Korea Automotive Technology Institute Chungnam South Korea
| | - Gyeongchan Ryu
- School of Chemical Engineering Pusan National University Busan South Korea
| | - Pyoung‐Chan Lee
- Materials Technology R&D Division Korea Automotive Technology Institute Chungnam South Korea
| | - Youn Ki Ko
- Materials Technology R&D Division Korea Automotive Technology Institute Chungnam South Korea
| | - Sun Kyoung Jeoung
- Materials Technology R&D Division Korea Automotive Technology Institute Chungnam South Korea
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42
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Quantification and Characterization of Metals in Ultrafine Road Dust Particles. ATMOSPHERE 2021. [DOI: 10.3390/atmos12121564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Road dust is an important source of resuspended particulate matter (PM) but information is lacking on the chemical composition of the ultrafine particle fraction (UFP; <0.1 µm). This study investigated metal concentrations in UFP isolated from the “dust box” of sweepings collected by the City of Toronto, Canada, using regenerative-air-street sweepers. Dust box samples from expressway, arterial and local roads were aerosolized in the laboratory and were separated into thirteen particle size fractions ranging from 10 nm to 10 µm (PM10). The UFP fraction accounted for about 2% of the total mass of resuspended PM10 (range 0.23–8.36%). Elemental analysis using ICP-MS and ICP-OES revealed a marked enrichment in Cd, Cr, Zn and V concentration in UFP compared to the dust box material (nano to dust box ratio ≥ 2). UFP from arterial roads contained two times more Cd, Zn and V and nine times more Cr than UFP from local roads. The highest median concentration of Zn was observed for the municipal expressway, attributed to greater volumes of traffic, including light to heavy duty vehicles, and higher speeds. The observed elevated concentrations of transition metals in UFP are a human health concern, given their potential to cause oxidative stress in lung cells.
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43
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Luo Z, Zhou X, Su Y, Wang H, Yu R, Zhou S, Xu EG, Xing B. Environmental occurrence, fate, impact, and potential solution of tire microplastics: Similarities and differences with tire wear particles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 795:148902. [PMID: 34328941 DOI: 10.1016/j.scitotenv.2021.148902] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/04/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Tire microplastics (TMPs) are identified as one of the most abundant types of microplastics, which originate from rubber with intended or unintended release. While increasing knowledge about TMPs concentrates on tire wear particles (TWPs), TMPs from other potential sources like recycled tire crumb (RTC) and tire repair-polished debris (TRD) are much less understood. Excessive levels of TMPs and their additives have been fragmentarily reported in the environment. The accumulating environmental TMPs from different sources may directly or indirectly cause adverse impacts on the environment and human health. The objectives of this review are to (1) summarize the properties, abundance, and sources of TMPs in the environment; (2) analyze the environmental fates and behaviors of TMPs, including their roles in carrying abiotic and biotic co-contaminants; (3) evaluate the potential impacts of TMPs on terrestrial and aquatic organisms, as well as human; and (4) discuss the potential solutions to mitigate the TMP pollution. By collecting and analyzing the up-to-date literature, this review enhances our better understanding of the environmental occurrence, fates, impacts, and potential solutions of TMPs, and further highlights critical knowledge gaps and future research directions that require cooperative efforts of scientists, policymakers, and public educators.
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Affiliation(s)
- Zhuanxi Luo
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Xinyi Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Yu Su
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Haiming Wang
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Ruilian Yu
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Shufeng Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen 361021, China
| | - Elvis Genbo Xu
- Department of Biology, University of Southern Denmark, Odense 5230, Denmark
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003, USA.
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44
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Klöckner P, Seiwert B, Weyrauch S, Escher BI, Reemtsma T, Wagner S. Comprehensive characterization of tire and road wear particles in highway tunnel road dust by use of size and density fractionation. CHEMOSPHERE 2021; 279:130530. [PMID: 33878695 DOI: 10.1016/j.chemosphere.2021.130530] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/30/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Tire and road wear particles (TRWPs) are a major component of non-exhaust traffic emissions, but knowledge about their physico-chemical properties is limited. Road dust of a highway tunnel was fractionated by size and density, and fractions were analyzed for TRWPs, metals, seven tire tread indicator chemicals (benzothiazoles, 6-PPD and DPG) and effects in in-vitro bioassays. TRWP content in tunnel dust was very high (11-12%). The peak of the TRWP mass distribution was in the size fraction 20-50 μm, with 31-36% of the total TRWP mass and a content of up to 260 mg/g. The mass of organic tire constituents peaked in the smallest analyzed size fractions (<20 μm) with 35-55% of their total mass. They also peaked in the density fraction 1.3-1.7 g/cm³, indicating a lower TRWP density and a higher contribution of TP to TRWP (approx. 75%) than expected. Video-based shape analysis and SEM showed elongated particles, likely TRWPs, to be present in those size and density fractions ascribed to TRWPs by chemical analysis. But also irregular heteroagglomerates could be found. Solvent extracts of size and density fractions induced effects in bioassays indicative of the activation of the arylhydrocarbon receptor (AhR-CALUX) and the adaptive response to oxidative stress (AREc32). Similar comprehensive characterization of road dust from other sites may be needed to decide on whether TRWPs occurring in high concentrations in tunnel dust are suited as representative test materials for analytical purposes and TRWP fate studies.
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Affiliation(s)
- Philipp Klöckner
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Bettina Seiwert
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Steffen Weyrauch
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Beate I Escher
- Helmholtz-Centre for Environmental Research - UFZ, Department Cell Toxicology, Permoserstrasse 15, 04318, Leipzig, Germany; Eberhard-Karls-University Tübingen, Center for Applied Geoscience, Environmental Toxicology, Schnarrenbergstrasse 94-96, 72076, Tübingen, Germany
| | - Thorsten Reemtsma
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany; University of Leipzig, Institute of Analytical Chemistry, Linnéstrasse 3, 04103, Leipzig, Germany.
| | - Stephan Wagner
- Helmholtz-Centre for Environmental Research - UFZ, Department Analytical Chemistry, Permoserstrasse 15, 04318, Leipzig, Germany
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45
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Piscitello A, Bianco C, Casasso A, Sethi R. Non-exhaust traffic emissions: Sources, characterization, and mitigation measures. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:144440. [PMID: 33421784 DOI: 10.1016/j.scitotenv.2020.144440] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/24/2020] [Accepted: 12/07/2020] [Indexed: 05/12/2023]
Abstract
Non-exhaust emissions (NEE) of particulate matter (PM) from brake, tyre, road pavement and railway wear, as well as resuspension of already deposited road dust, account for up to 90% by mass of total traffic-related PM emitted. This review aims at analysing the current knowledge on road traffic NEE regarding sources, particle generation processes, chemical and physical characterization, and mitigation strategies. The literature on this matter often presents highly variable and hardly comparable results due to the heterogeneity of NEE sources and the absence of standardized sampling and measurement protocols. As evidence, emission factors (EFs) were found to range from 1 mg km-1 veh-1 to 18.5 mg km-1 veh-1 for brake wear, and from 0.3 mg km-1 veh-1 to 7.4 mg km-1 veh-1 for tyre wear. Resuspended dust, which varies in even wider ranges (from 5.4 mg km-1 veh-1 to 330 mg km-1 veh-1 for cars), is considered the prevailing NEE source. The lack of standardized monitoring approaches resulted in the impossibility of setting international regulations to limit NEE. Therefore, up until now the abatement of NEE has only been achieved by mitigation and prevention strategies. However, the effectiveness of these measures still needs to be improved and further investigated. As an example, mitigation strategies, such as street washing or sweeping, proved effective in reducing PM levels, but only in the short term. The replacement of internal combustion engines vehicles with electric ones was instead proposed as a prevention strategy, but there are still concerns regarding the increase of NEE deriving from the extra weight of the batteries. The data reported in this review highlighted the need for future studies to broaden their research area, and to focus not only on the standardization of methods and the introduction of regulations, but also on improving already existing technologies and mitigating strategies.
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Affiliation(s)
- Amelia Piscitello
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Carlo Bianco
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Alessandro Casasso
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Rajandrea Sethi
- Department of Environment, Land and Infrastructure Engineering (DIATI), Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy.
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46
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Kim J, Yang SI, Moon H, Hong J, Hong J, Choi W, Son H, Lee BC, Kim GB, Kim Y. Potential release of nano-carbon black from tire-wear particles through the weathering effect. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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47
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Hu L, Fu J, Wang S, Xiang Y, Pan X. Microplastics generated under simulated fire scenarios: Characteristics, antimony leaching, and toxicity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 269:115905. [PMID: 33290952 DOI: 10.1016/j.envpol.2020.115905] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 10/15/2020] [Accepted: 10/18/2020] [Indexed: 05/27/2023]
Abstract
Intentional or incidental thermal changes inevitably occur during the lifecycle of plastics. High temperatures accelerate the aging of plastics and promote their fragmentation to microplastics (MPs). However, there is little information available on the release of MPs after fires. In this study, an atomic force microscope combined with nanoscale infrared analysis was used to demonstrate the physicochemical properties of polypropylene (PP) plastics under simulated fire scenarios. Results showed that the chemical composition and relative stiffness of heat-treated plastic surfaces changed, significantly enhancing the generation of MPs under external forces; over (2.1 ± 0.2) × 105 items/kg abundance of MPs released from PP which were burned at 250 °C in air and trampled by a person. The leaching of antimony (Sb) from MPs in different solutions first increased and then decreased with increasing temperature, reaching a maximum at 250 °C. Higher concentrations of humic acid (10 vs 1 mg/L) caused a greater release of Sb. Furthermore, the tap water leachates of PP burned at 250 °C had the greatest effect on the growth and photosynthetic activity of Microcystis aeruginosa. Our results suggest fires as a potential source of MPs and calls for increased focus on burning plastics in future research.
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Affiliation(s)
- Lingling Hu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Juyang Fu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Shuo Wang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yahui Xiang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xiangliang Pan
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
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48
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Zhang J, Peng J, Song C, Ma C, Men Z, Wu J, Wu L, Wang T, Zhang X, Tao S, Gao S, Hopke PK, Mao H. Vehicular non-exhaust particulate emissions in Chinese megacities: Source profiles, real-world emission factors, and inventories. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115268. [PMID: 32836045 DOI: 10.1016/j.envpol.2020.115268] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
Vehicular non-exhaust emissions account for a significant share of atmospheric particulate matter (PM) pollution, but few studies have successfully quantified the contribution of non-exhaust emissions via real-world measurements. Here, we conduct a comprehensive study combining tunnel measurements, laboratory dynamometer and resuspension experiments, and chemical mass balance modeling to obtain source profiles, real-world emission factors (EFs), and inventories of vehicular non-exhaust PM emissions in Chinese megacities. The average vehicular PM2.5 and PM10 EFs measured in the four tunnels in four megacities (i.e., Beijing, Tianjin, Zhengzhou, and Qingdao) range from 8.8 to 16.0 mg km-1 veh-1 and from 37.4 to 63.9 mg km-1 veh-1, respectively. A two-step source apportionment is performed with the information of key tracers and localized profiles of each exhaust and non-exhaust source. Results show that the reconstructed PM10 emissions embody 51-64% soil and cement dust, 26-40% tailpipe exhaust, 7-9% tire wear, and 1-3% brake wear, while PM2.5 emissions are mainly composed of 59-80% tailpipe exhaust, 11-31% soil and cement dust, 4-10% tire wear, and 1-5% brake wear. Fleet composition, road gradient, and pavement roughness are essential factors in determining on-road non-exhaust emissions. Based on the EFs and the results of source apportionment, we estimate that the road dust, tire wear, and brake wear emit 8.1, 2.5, and 0.8 Gg year-1 PM2.5 in China, respectively. Our study highlights the importance of non-exhaust emissions in China, which is essential to assess their impacts on air quality, human health, and climate and formulating effective controlling measures.
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Affiliation(s)
- Jinsheng Zhang
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Jianfei Peng
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, 77843, USA
| | - Congbo Song
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Chao Ma
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Zhengyu Men
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Jianhui Wu
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Lin Wu
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Ting Wang
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Xinfeng Zhang
- China Automotive Technology and Research Center Co., Ltd., Tianjin, 300300, China
| | - Shuangcheng Tao
- China Academy of Transportation Science, Beijing, 100029, China
| | - Shuohan Gao
- China Academy of Transportation Science, Beijing, 100029, China
| | - Philip K Hopke
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China; Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY, 14642, USA
| | - Hongjun Mao
- Tianjin Key Laboratory of Urban Transport Emission Research& State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
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49
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Wang L, Luo Z, Zhen Z, Yan Y, Yan C, Ma X, Sun L, Wang M, Zhou X, Hu A. Bacterial community colonization on tire microplastics in typical urban water environments and associated impacting factors. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114922. [PMID: 32554087 DOI: 10.1016/j.envpol.2020.114922] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/17/2020] [Accepted: 05/30/2020] [Indexed: 06/11/2023]
Abstract
Only limited information is available on bacterial communities' dynamics on tire microplastics in urban water environments. This study exploited 16S rDNA high-throughput sequencing to characterize bacterial communities on tire microplastics, using three different tire brands and tire sizes, in two typical urban water environments, including an influent pond of constructed wetland (CW) and its subsequent effluent into a landscape river (LR) during three different periods, namely, 1 month, 3 and 6 months. Results showed that the abundance of bacterial colonization on tire microplastics will increase over time. Proteobacteria, Bacteroidetes were the dominant bacteria at a phylum level, although they exhibited dynamic changes. At a genus level, the identifiable bacteria found in tire microplastics was generally the common bacteria in wastewater discharge, such as Aquabacterium and Denitratisoma. Additionally, alpha diversity showed no significant differences in bacterial communities at the same locations. While beta diversity showed that the bacterial communities on the tire microplastics in the two locations was different. BugBase revealed that tire microplastics could support pathogenic bacteria in urban water environments. PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States) indicated that the abundance of microorganisms associated with metabolism and degradation increased with time. Moreover, the ambient environmental factors were the main influencing factors of bacterial communities on tire microplastics. Herein, the contribution rate of nutrient salts (NO2-N, NO3-N, NH4-N, CODcr) was approximately 63%, and that of environmental physical factors of T and pH was 50%. While physicochemical factors, including particle size, contact angle, element content only had a slight impact. Accordingly, tire microplastics, as an emerging environmental pollutant, can act as carries for bacterial colonization and propagation, particularly harmful microorganisms. Therefore, the obtained findings can provide new insight into potential risks of harmful microorganisms that colonize tire microplastics in urban water environments.
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Affiliation(s)
- Liyuan Wang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhuanxi Luo
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China.
| | - Zhuo Zhen
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Yu Yan
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Changzhou Yan
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Xiaofei Ma
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lang Sun
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mei Wang
- College of Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Xinyi Zhou
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Anyi Hu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
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50
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Yukioka S, Tanaka S, Nabetani Y, Suzuki Y, Ushijima T, Fujii S, Takada H, Van Tran Q, Singh S. Occurrence and characteristics of microplastics in surface road dust in Kusatsu (Japan), Da Nang (Vietnam), and Kathmandu (Nepal). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113447. [PMID: 31679875 DOI: 10.1016/j.envpol.2019.113447] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 05/18/2023]
Abstract
Microplastics (MPs, plastics < 5 mm) are a growing concern in ecosystems, being found in the soil and water environment. One of the primary sources of MPs has been suspected to be road dust in urban areas as it can flow into waters with runoff. To understand the occurrence of MPs (100 μm-5 mm) in surface road dust of three cities (Kusatsu, Shiga, Japan; Da Nang, Vietnam; and Kathmandu, Nepal), we collected surface road dust samples. The samples were pretreated (organic matter decomposition and gravity separation), and all MP candidates were individually observed by microscope for color, shape, and size; and analyzed their polymer types using fourier transform infrared spectrometry. The abundances of MPs 100 μm to 5 mm in size were 2.0 ± 1.6 pieces/m2 (13 polymer types) in Kusatsu, 19.7 ± 13.7 pieces/m2 in Da Nang (14 types), and 12.5 ± 10.1 pieces/m2 in Kathmandu (15 types). We classified the MPs into two groups; containers/packaging-MPs and rubber-MPs. Among all MPs, the containers/packaging-MPs accounted for 55 ± 5% of the polymer types composition. In contrast, the rubber-MPs accounted for 16 ± 6% of all MPs which were higher than those previously published for environmental water and sediment samples. The containers/packaging-MPs were fragments of various colors while most of the rubber-MPs were fragments or granules in black. The number-size distributions of MPs showed that the mode of formation explains the differences between their polymer types (tearing for containers/packaging-MPs and abrasion for rubber-MPs). In Da Nang and Kathmandu, the abundance of containers/packaging-MPs and rubber-MPs were correlated so that those MPs might be micronized from the originated materials in the sources with the similar composition (e.g. dump points). It was indicated that the characteristics of MPs pollution in surface road dust might be different depending on waste management practices.
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Affiliation(s)
- Satoru Yukioka
- Graduate School of Global Environmental Studies, Kyoto University, Yoshida, Sakyo-Ku, Kyoto, Japan.
| | - Shuhei Tanaka
- Graduate School of Global Environmental Studies, Kyoto University, Yoshida, Sakyo-Ku, Kyoto, Japan
| | - Yoshiki Nabetani
- Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-Ku, Kyoto, Japan
| | - Yuji Suzuki
- Public Works Research Institute, Minamihara, Tsukuba-city, Ibaraki, Japan
| | - Taishi Ushijima
- Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-Ku, Kyoto, Japan
| | - Shigeo Fujii
- Graduate School of Global Environmental Studies, Kyoto University, Yoshida, Sakyo-Ku, Kyoto, Japan
| | - Hideshige Takada
- Laboratory of Organic Geochemistry (LOG), Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Quang Van Tran
- Faculty of Environment, Da Nang University of Science and Technology, Nguyen Luong Bang St, Da Nang, Viet Nam
| | - Sangeeta Singh
- Institute of Engineering, Tribhuvan University, Kirtipur, Kathmandu, Nepal
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