Characterization of ambient-generated exposure to fine particles using sulfate as a tracer in the Chinese megacity of Guangzhou
Chen, Xiao-Cui1,7; Jahn, Heiko J.2; Engling, Guenter3,4; Ward, Tony J.5; Kraemer, Alexander2; Ho, Kin-Fai1; Chan, Chuen-Yu6
2017-02-15
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
卷号580期号:2017页码:347-357
文章类型Article
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.
关键词Environmental Monitoring Personal Exposure Fine Aerosol Particles (Pm2.5) So42- Ec
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2016.10.241
关键词[WOS]PARTICULATE AIR-POLLUTION ; PERSONAL PM2.5 EXPOSURE ; MATTER EPIDEMIOLOGY-EXPOSURE ; TEMPORAL VARIABILITY ; CHEMICAL-COMPONENTS ; ULTRAFINE PARTICLES ; MASS CONCENTRATIONS ; AIRBORNE PARTICLES ; ELEMENTAL CARBON ; DAILY MORTALITY
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000395353600034
引用统计
被引频次:3[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/361006/5517
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China
2.Univ Bielefeld, Sch Publ Hlth, Dept Publ Hlth Med, Bielefeld, Germany
3.Desert Res Inst, Div Atmospher Sci, Reno, NV USA
4.Natl Tsing Hua Univ, Dept Biomed Engn & Environm Sci, Hsinchu, Taiwan
5.Univ Montana, Sch Publ & Community Hlth Sci, Missoula, MT 59812 USA
6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol, SKLLQG, Xian, Peoples R China
7.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Sha Tin, Hong Kong, Peoples R China
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Chen, Xiao-Cui,Jahn, Heiko J.,Engling, Guenter,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 Chen, Xiao-Cui.,Jahn, Heiko J..,Engling, Guenter.,Ward, Tony J..,Kraemer, Alexander.,...&Chan, Chuen-Yu.(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 Chen, Xiao-Cui,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.
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