干旱区生态环境知识资源中心(Arid): Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources

Arid

DOI	10.1016/j.envpol.2021.118356
	Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources
	Oroumiyeh, Farzan; Jerrett, Michael; Del Rosario, Irish; Lipsitt, Jonah; Liu, Jonathan; Paulson, Suzanne E.; Ritz, Beate; Schauer, James J.; Shafer, Martin M.; Shen, Jiaqi; Weichenthal, Scott; Banerjee, Sudipto; Zhu, Yifang
通讯作者	Zhu, YF (corresponding author), Univ Calif Los Angeles, Jonathan & Karin Fielding Sch Publ Hlth, Dept Environm Hlth Sci, Los Angeles, CA 90095 USA.
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2022
卷号	292
英文摘要	The inorganic components of particulate matter (PM), especially transition metals, have been shown to contribute to PM toxicity. In this study, the spatial distribution of PM elements and their potential sources in the Greater Los Angeles area were studied. The mass concentration and detailed elemental composition of fine (PM2.5) and coarse (PM2.5-10) particles were assessed at 46 locations, including urban traffic, urban community, urban background, and desert locations. Crustal enrichment factors (EFs), roadside enrichments (REs), and bivariate correlation analysis revealed that Ba, Cr, Cu, Mo, Pd, Sb, Zn, and Zr were associated with traffic emissions in both PM2.5 and PM2.5-10, while Fe, Li, Mn, and Ti were affected by traffic emissions mostly in PM2.5. The concentrations of Ba, Cu, Mo, Sb, Zr (brake wear tracers), Pd (tailpipe tracer), and Zn (associated with tire wear) were higher at urban traffic sites than urban background locations by factors of 2.6-4.6. Both PM2.5 and PM2.5-10 elements showed large spatial variations, indicating the presence of diverse emission sources across sampling locations. Principal component analysis extracted four source factors that explained 88% of the variance in the PM2.5 elemental concentrations, and three sources that explained 86% of the variance in the PM2.5-10 elemental concentrations. Based on multiple linear regression analysis, the contribution of traffic emissions (27%) to PM2.5 was found to be higher than mineral dust (23%), marine aerosol (18%), and industrial emissions (8%). On the other hand, mineral dust was the dominant source of PM2.5-10 with 45% contribution, followed by marine aerosol (22%), and traffic emissions (19%). This study provides novel insight into the spatial variation of traffic-related elements in a large metropolitan area.
英文关键词	Trace metals Brake wear Tire wear Traffic emissions Non-exhaust emissions
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000711785100002
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; PARTICULATE AIR-POLLUTION ; SOURCE APPORTIONMENT ; ROAD DUST ; CHEMICAL-COMPOSITION ; SOUTHERN CALIFORNIA ; TRAFFIC EMISSIONS ; TRACE-ELEMENTS ; TIRE WEAR ; MATTER
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374462
作者单位	[Oroumiyeh, Farzan; Jerrett, Michael; Lipsitt, Jonah; Liu, Jonathan; Zhu, Yifang] Univ Calif Los Angeles, Jonathan & Karin Fielding Sch Publ Hlth, Dept Environm Hlth Sci, Los Angeles, CA 90095 USA; [Del Rosario, Irish; Ritz, Beate] Univ Calif Los Angeles, Jonathan & Karin Fielding Sch Publ Hlth, Dept Epidemiol, Los Angeles, CA 90095 USA; [Paulson, Suzanne E.; Shen, Jiaqi] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; [Schauer, James J.; Shafer, Martin M.] Univ Wisconsin Madison, Sch Med & Publ Hlth, Wisconsin State Lab Hyg, Madison, WI USA; [Weichenthal, Scott] McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada; [Banerjee, Sudipto] Univ Calif Los Angeles, Jonathan & Karin Fielding Sch Publ Hlth, Dept Biostat, Los Angeles, CA 90095 USA
推荐引用方式 GB/T 7714	Oroumiyeh, Farzan,Jerrett, Michael,Del Rosario, Irish,et al. Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources[J],2022,292.
APA	Oroumiyeh, Farzan.,Jerrett, Michael.,Del Rosario, Irish.,Lipsitt, Jonah.,Liu, Jonathan.,...&Zhu, Yifang.(2022).Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources.ENVIRONMENTAL POLLUTION,292.
MLA	Oroumiyeh, Farzan,et al."Elemental composition of fine and coarse particles across the greater Los Angeles area: Spatial variation and contributing sources".ENVIRONMENTAL POLLUTION 292(2022).