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DOI	10.1016/j.atmosenv.2020.118109
	Temporal variations of PM2.5-bound platinum group elements in outdoor and indoor environments close to areas with traffic congestion
	Fang S.; Zhao C.; Hu J.; Xing Y.; Meng Q.; Yu X.; Wang H.; Wang P.; Zhang R.; Gao P.
发表日期	2021
ISSN	1352-2310
卷号	246
英文摘要	Every city in the world faces pollution problems caused by traffic congestion almost every day. Platinum group elements (PGE) have been accumulating in the urban environment as catalytic converters for automobile exhaust emissions control. This study aims to determine the temporal variations of airborne particulate matter (PM)-bound PGE [Platinum (Pt), palladium (Pd) and rhodium (Rh)] in areas close to traffic congestion hotspots. Compared with the morning peak time, the concentrations of Pt, Pd, and Rh in outdoor airborne PM samples (PM2.5) collected in winter during the evening peak time increased by 35.03%, 37.45% and 75.47%, respectively, and the corresponding indoor environment was 9.33%, 6.93% and 71.36%, respectively. Significant temporal variations of PM2.5-bound Pt, Pd, and Rh concentrations were observed during the time period of the Spring Festival. From before to during the Spring Festival, the outdoor environment Pt, Pd, and Rh concentrations sharply decreased by 172.1%, 14.72% and 22.96%, respectively, while the indoor environment decreased by 228.0%, 300.6% and 129.5%, respectively. From a seasonal perspective, among PM2.5 collected from the outdoor environment, PGE concentrations are the highest in winter and the lowest in summer. The temporal variation of the ratios (Pt/Pd, Pt/Rh, and Pd/Rh) indicates that PM2.5-bound Pd concentration increased in the vicinity of traffic congestion. Further, the increased diesel-based trucks with Pt-dominant catalytic converters may contribute to PM2.5-bound Pt detected in the autumn and winter of the alpine area (e.g. Harbin). © 2020 Elsevier Ltd
关键词	Catalytic converters Indoor/outdoor environments Particulate matter Platinum group elements Pt–Pd–Rh Traffic congestion
语种	英语
scopus关键词	Catalytic converters; Platinum; Airborne particulate matters; Automobile exhaust emissions; Indoor environment; Outdoor environment; Platinum group elements; Pollution problems; Temporal variation; Urban environments; Traffic congestion; palladium; platinum; rhodium; airborne survey; atmospheric pollution; concentration (composition); exhaust emission; particulate matter; platinum group element; temporal variation; traffic congestion; urban pollution; Article; autumn; concentration (parameter); indoor environment; particulate matter 2.5; priority journal; seasonal variation; spring; summer; time; traffic; winter; China; Harbin; Heilongjiang
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248688
作者单位	School of Environment and Resources, Fuzhou University, Fuzhou, China; Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan; Guangdong Provincial Field Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; Heilongjiang Province Environmental Monitoring Center, Harbin, China
推荐引用方式 GB/T 7714	Fang S.,Zhao C.,Hu J.,et al. Temporal variations of PM2.5-bound platinum group elements in outdoor and indoor environments close to areas with traffic congestion[J],2021,246.
APA	Fang S..,Zhao C..,Hu J..,Xing Y..,Meng Q..,...&Gao P..(2021).Temporal variations of PM2.5-bound platinum group elements in outdoor and indoor environments close to areas with traffic congestion.ATMOSPHERIC ENVIRONMENT,246.
MLA	Fang S.,et al."Temporal variations of PM2.5-bound platinum group elements in outdoor and indoor environments close to areas with traffic congestion".ATMOSPHERIC ENVIRONMENT 246(2021).