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Characteristics of Organic and Elemental Carbon in PM2.5 andPM(0.25) in Indoor and Outdoor Environments of a Middle School: Secondary Formation of Organic Carbon and Sources Identification
Xu, Hongmei1,2; Guinot, Benjamin3; Shen, Zhenxing1; Ho, Kin Fai4; Niu, Xinyi2,5; Xiao, Shun2,6; Huang, Ru-Jin2,7,8; Cao, Junji2,9
2015-03-01
Source PublicationATMOSPHERE
ISSN2073-4433
Volume6Issue:3Pages:361-379
SubtypeArticle
Abstract

Secondary organic carbon (SOC) formation and its effects on human health require better understanding in Chinese megacities characterized by a severe particulate pollution and robust economic reform. This study investigated organic carbon (OC) and elemental carbon (EC) in PM2.5 and PM0.25 collected 8-20 March 2012. Samples were collected inside and outside a classroom in a middle school at Xi'an. On average, OC and EC accounted for 20%-30% of the particulate matter (PM) mass concentration. By applying the EC-tracer method, SOC's contribution to OC in both PM size fractions was demonstrated. The observed changes in SOC:OC ratios can be attributed to variations in the primary production processes, the photochemical reactions, the intensity of free radicals, and the meteorological conditions. Total carbon (TC) source apportionment by formula derivation showed that coal combustion, motor vehicle exhaust, and secondary formation were the major sources of carbonaceous aerosol. Coal combustion appeared to be the largest contributor to TC (50%), followed by motor vehicle exhaust (25%) and SOC (18%) in both size fractions.

WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3390/atmos6030361
WOS KeywordRiver Delta Region ; Particulate Matter ; Chemical-composition ; Seasonal-variations ; Black-carbon ; Hong-kong ; Indoor/outdoor Relationships ; Particle Concentrations ; Source Apportionment ; Aerosol Formation
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000351941800008
PublisherMDPI AG
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9326
Collection粉尘与环境研究室
Corresponding AuthorXu, Hongmei
Affiliation1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
3.Univ Toulouse, CNRS, Observ Midi Pyrenees, Lab Aerol, F-31400 Toulouse, France
4.Chinese Univ Hong Kong, Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China
5.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
6.Shaanxi Meteorol Bur, Xian 710014, Peoples R China
7.PSI, Lab Atmospher Chem, CH-5232 Villigen, Switzerland
8.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Air Pollut Studies, Galway, Ireland
9.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
Recommended Citation
GB/T 7714
Xu, Hongmei,Guinot, Benjamin,Shen, Zhenxing,et al. Characteristics of Organic and Elemental Carbon in PM2.5 andPM(0.25) in Indoor and Outdoor Environments of a Middle School: Secondary Formation of Organic Carbon and Sources Identification[J]. ATMOSPHERE,2015,6(3):361-379.
APA Xu, Hongmei.,Guinot, Benjamin.,Shen, Zhenxing.,Ho, Kin Fai.,Niu, Xinyi.,...&Cao, Junji.(2015).Characteristics of Organic and Elemental Carbon in PM2.5 andPM(0.25) in Indoor and Outdoor Environments of a Middle School: Secondary Formation of Organic Carbon and Sources Identification.ATMOSPHERE,6(3),361-379.
MLA Xu, Hongmei,et al."Characteristics of Organic and Elemental Carbon in PM2.5 andPM(0.25) in Indoor and Outdoor Environments of a Middle School: Secondary Formation of Organic Carbon and Sources Identification".ATMOSPHERE 6.3(2015):361-379.
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