Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China

doi:10.1016/j.scitotenv.2022.153717

	Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China
	Sun, Jian 1; Ho, Steven Sai Hang 2; Niu, Xinyi 3; Xu, Hongmei 1; Qu, Linli 5; Shen, Zhenxing 1; Cao, Junji 6; Chuang, Hsiao-Chi 7; Ho, Kin-Fai 4
通讯作者	Ho, Kin-Fai(kfho@cuhk.edu.hk)
	2022-06-01
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	823 页码:8
摘要	Tire 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.
关键词	Rubber microplastics Spatial distribution Urban road dust Oxidative stress Health impact
DOI	10.1016/j.scitotenv.2022.153717
关键词[WOS]	PYROLYSIS-GC/MS ; SOURCE PROFILES ; CYTOTOXICITY ; PARTICLES ; TRANSPORT ; POLLUTION ; SAMPLES ; BLENDS ; MASS
收录类别	SCI ; SCI
语种	英语
资助项目	China 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研究方向	Environmental Sciences & Ecology
项目资助者	China Postdoctoral Science Foundation ; XJTU Foundation of Basic Research ; Research Grant Council of The Hong Kong Special Administrative Region China
WOS类目	Environmental Sciences
WOS记录号	WOS:000766804300007
出版者	ELSEVIER
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17566
专题	中国科学院气溶胶化学与物理重点实验室
通讯作者	Ho, Kin-Fai
作者单位	1.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
推荐引用方式 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.