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	The oxidative potential of pm2.5 exposures from indoor and outdoor sources in rural china
	Secrest, Matthew H.1,2; Schauer, James J.3,4; Carter, Ellison M.5; Lai, Alexandra M.3; Wang, Yuqin6; Shan, Ming7; Yang, Xudong7; Zhang, Yuanxun6; Baumgartner, Jill1,2,5
刊名	Science of the total environment
	2016-11-15
卷号	571页码:1477-1489
关键词	Chemical speciation Exposure assessment Household air pollution Reactive oxygen species Redox activity Solid fuel
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2016.06.231
通讯作者	Baumgartner, jill(jill.baumgartner@mcgill.ca)
英文摘要	Background: airborne particulate matter (pm) is a widespread environmental exposure and leading health risk factor. the health effects of pm may be mediated by its oxidative potential; however, the combustion and non combustion sources and components of pm responsible for its oxidative potential are poorly understood, particularly in low-and middle-income rural settings where coal and biomass burning for cooking and heating contribute to pm exposure. methods: we measured 24-h personal exposures to fine particulate matter (pm2.5) of 20 rural women in northern (inner mongolia) and southern (sichuan) chinese provinces who used solid fuels (le., coal, biomass). pm2.5 exposures were characterized for mass, black carbon, water-soluble organic carbon, major water-soluble ions, and 47 elements. the oxidative potential of pm2.5 exposures was measured using acellular (dithiothreitol-based) and cellular (macrophage-based) assays. we performed factor and correlation analyses using the chemical components of pm2.5 to identify sources of exposure to pm2.5 and their chemical markers. associations between oxidative potential and chemical markers for major sources of pm2.5 exposure were assessed using linear regression models. results: women's geometric mean pm2.5 exposures were 249 mu g m(-3) (range: 53.9-767) and 83.9 mu g m(-3) (range: 73.1-95.5) in inner mongolia and sichuan, respectively. dust, biomass combustion, and coal combustion were identified as the major sources of exposure to pm2.5. markers for dust (iron, aluminum) were significantly associated with intrinsic oxidative potential [e.g., one interquartile range increase in iron (ppm) was associated with an 85.5% (95% ci: 21.5, 149) increase in cellular oxidative potential (mu g zymosan mg(-1))], whereas markers for coal (arsenic, non-sulfate sulfur) and biomass (black carbon, cadmium) combustion were not associated with oxidative potential. conclusions: dust was largely responsible for the intrinsic oxidative potential of pm2.5 exposures of rural chinese women, whereas biomass and coal combustion were not significantly associated with intrinsic oxidative potential. (c) 2016 elsevier b.v. all rights reserved.
WOS关键词	AIRBORNE PARTICULATE MATTER ; HOUSEHOLD AIR-POLLUTION ; LOS-ANGELES BASIN ; BIOMASS FUELS ; SOURCE APPORTIONMENT ; CHEMICAL-COMPOSITION ; BLOOD-PRESSURE ; WOMEN COOKING ; TRACE-METALS ; PARTICLES
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000383930400146
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375974
专题	中国科学院大学
通讯作者	Baumgartner, Jill
作者单位	1.McGill Univ, Dept Epidemiol Biostat & Occupat Hlth, Montreal, PQ, Canada 2.McGill Univ, Inst Hlth & Social Policy, Montreal, PQ, Canada 3.Univ Wisconsin, Environm Chem & Technol Program, Madison, WI USA 4.Univ Wisconsin, Wisconsin State Lab Hyg, Madison, WI 53706 USA 5.Univ Minnesota, Inst Environm, Minneapolis, MN USA 6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 7.Tsinghua Univ, Dept Bldg Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Secrest, Matthew H.,Schauer, James J.,Carter, Ellison M.,et al. The oxidative potential of pm2.5 exposures from indoor and outdoor sources in rural china[J]. Science of the total environment,2016,571:1477-1489.
APA	Secrest, Matthew H..,Schauer, James J..,Carter, Ellison M..,Lai, Alexandra M..,Wang, Yuqin.,...&Baumgartner, Jill.(2016).The oxidative potential of pm2.5 exposures from indoor and outdoor sources in rural china.Science of the total environment,571,1477-1489.
MLA	Secrest, Matthew H.,et al."The oxidative potential of pm2.5 exposures from indoor and outdoor sources in rural china".Science of the total environment 571(2016):1477-1489.

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