IEECAS OpenIR  > 中国科学院气溶胶化学与物理重点实验室
Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China
Sun, Jian1; Ho, Steven Sai Hang2; Niu, Xinyi3; Xu, Hongmei1; Qu, Linli5; Shen, Zhenxing1; Cao, Junji6; Chuang, Hsiao-Chi7; Ho, Kin-Fai4
Corresponding AuthorHo, Kin-Fai(kfho@cuhk.edu.hk)
2022-06-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume823Pages:8
AbstractTire and road wear microplastics (TRWMPs) in road dust are a key source of atmospheric particulate matter and have an adverse impact on human health and the environment. In this study, samples of particulate matter with a diameter of 2.5 mu m or less (PM2.5) in road dust were collected from eight megacities in China to determine the TRWMP content, including that of natural rubber (NR), styrene-butadiene rubber (SBR), and butadiene rubber (BR). The total abundance of TRWMPs was the highest in Lanzhou (174.7 +/- 17.0 mu g g(-1)), followed by Xi'an (169.3 +/- 23.8 mu g g(-1)), Beijing (107.5 +/- 7.5 mu g g(-1)), Changchun (102.2 +/- 8.4 mu g g(-1)), Chengdu (101.6 +/- 12.9 mu g g(-1)), Guangzhou (98.8 +/- 6.5 mu g g(-1)), Wuhan (96.0 +/- 5.3 mu g g(-1)), and Shanghai (86.1 +/- 30.1 mu g g(-1)). A considerably higher TRWMP fraction in road dust PM2.5 was observed in the northern cities than in the southern cities and is attributable to the higher frictional resistance of roads subjected to less precipitation. The abundance of TRWMPs in the southern cities was dependent on road type, but this dependence was not observed in the northern cities. In the south, road dust PM2.5 on main roads contained more TRWMPs than that on branch roads. Correlation analysis indicated that TRWMPs were associated with tire, road, and break wear. In relation to intracellular oxidative stress factors, higher correlations were observed between TRWMPs and lactate dehydrogenase (r = 0.83) than between TRWMPs and reactive oxygen species (r = 0.59), possibly because TRWMPs destroy the integrity of the cell membrane, with NR exhibiting a higher cytotoxicity than SBR or BR. This study provides evidence that TRWMPs have an adverse impact on human health by inducing cellular oxidative stress. Therefore, further research on TRWMPs in respirable road dust is required.
KeywordRubber microplastics Spatial distribution Urban road dust Oxidative stress Health impact
DOI10.1016/j.scitotenv.2022.153717
WOS KeywordPYROLYSIS-GC/MS ; SOURCE PROFILES ; CYTOTOXICITY ; PARTICLES ; TRANSPORT ; POLLUTION ; SAMPLES ; BLENDS ; MASS
Indexed BySCI ; SCI
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2021M692549] ; XJTU Foundation of Basic Research[xjh 012020024] ; Research Grant Council of The Hong Kong Special Administrative Region China[T24-504/17-N]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationChina Postdoctoral Science Foundation ; XJTU Foundation of Basic Research ; Research Grant Council of The Hong Kong Special Administrative Region China
WOS SubjectEnvironmental Sciences
WOS IDWOS:000766804300007
PublisherELSEVIER
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17566
Collection中国科学院气溶胶化学与物理重点实验室
Corresponding AuthorHo, Kin-Fai
Affiliation1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
2.Desert Res Inst, Div Atmosphere Sci, Reno, NV 89512 USA
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
4.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Peoples R China
5.Hong Kong Premium Serv & Res Lab, Kowloon, Hong Kong, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710075, Peoples R China
7.Taipei Med Univ, Coll Med, Sch Resp Therapy, Taipei, Taiwan
Recommended Citation
GB/T 7714
Sun, Jian,Ho, Steven Sai Hang,Niu, Xinyi,et al. Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,823:8.
APA Sun, Jian.,Ho, Steven Sai Hang.,Niu, Xinyi.,Xu, Hongmei.,Qu, Linli.,...&Ho, Kin-Fai.(2022).Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China.SCIENCE OF THE TOTAL ENVIRONMENT,823,8.
MLA Sun, Jian,et al."Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China".SCIENCE OF THE TOTAL ENVIRONMENT 823(2022):8.
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