Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou

doi:10.1016/j.scitotenv.2016.10.241

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou
	Jahn, Heiko J.4; Engling, Guenter 3,6; Ward, Tony J.7; Kraemer, Alexander 4; Ho, Kin-Fai 5; Chan, Chuen-Yu 1; Chen, Xiao-Cui 2,5
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2017-02-15
卷号	580 期号:2017 页码:347-357
关键词	Environmental Monitoring Personal Exposure Fine Aerosol Particles (Pm2.5) So42- Ec
DOI	10.1016/j.scitotenv.2016.10.241
文献子类	Article
英文摘要	Total personal exposures can differ from the concentrations measured at stationary ambient monitoring sites. To provide further insight into factors affecting exposure to particles, chemical tracers were used to separate total personal exposure into its ambient and non-ambient components. Simultaneous measurements of ambient and personal exposure to fine particles (PM2.5) were conducted in eight districts of Guangzhou, a megacity in South China, during the winter of 2011. Considerable significant correlations (Spearman's Rho, r(s)) between personal exposures and ambient concentrations of sulfate (SO42-; r(s)> 0.68) were found in contrast to elemental carbon (EC; r(s) > 037). The average fraction of personal SW to ambient SO42- resulting in an adjusted ambient exposure factor of cc = 0.72 and a slope of 0.73 was determined from linear regression analysis when there were minimal indoor sources of SO42-. From all data pooled across the districts, the estimated average ambient -generated and non-ambient -generated exposure to PM2.5 were 55.3 mu g/m(3) (SD = 23.4 mu g/m(3)) and 18.1 mu g/m(3) (SD = 29.1 mu g/m(3)), respectively. A significant association was found between ambient -generated exposure and ambient PM2.5 concentrations (Pearson's r = 0.51, p < 0.001). As expected, the non-ambient generated exposure was not related to the ambient concentrations. This study highlights the importance of both ambient and non-ambient components of total personal exposure in the megacity of Guangzhou. Our results support the use of SO42- as a tracer of personal exposure to PM2.5 of ambient origin in environmental and epidemiological studies. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	PARTICULATE AIR-POLLUTION ; PERSONAL PM2.5 EXPOSURE ; MATTER EPIDEMIOLOGY-EXPOSURE ; TEMPORAL VARIABILITY ; CHEMICAL-COMPONENTS ; ULTRAFINE PARTICLES ; MASS CONCENTRATIONS ; AIRBORNE PARTICLES ; ELEMENTAL CARBON ; DAILY MORTALITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000395353600034
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5517]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol, SKLLQG, Xian, Peoples R China 2.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Sha Tin, Hong Kong, Peoples R China 3.Desert Res Inst, Div Atmospher Sci, Reno, NV USA 4.Univ Bielefeld, Sch Publ Hlth, Dept Publ Hlth Med, Bielefeld, Germany 5.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China 6.Natl Tsing Hua Univ, Dept Biomed Engn & Environm Sci, Hsinchu, Taiwan 7.Univ Montana, Sch Publ & Community Hlth Sci, Missoula, MT 59812 USA
推荐引用方式 GB/T 7714	Jahn, Heiko J.,Engling, Guenter,Ward, Tony J.,et al. Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,580(2017):347-357.
APA	Jahn, Heiko J..,Engling, Guenter.,Ward, Tony J..,Kraemer, Alexander.,Ho, Kin-Fai.,...&Chen, Xiao-Cui.(2017).Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou.SCIENCE OF THE TOTAL ENVIRONMENT,580(2017),347-357.
MLA	Jahn, Heiko J.,et al."Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou".SCIENCE OF THE TOTAL ENVIRONMENT 580.2017(2017):347-357.