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 | |
Ho, Kin Fai7; Cao, Junji2,9; Huang, Ru-Jin3,4,9; Xiao, Shun5,9; Niu, Xinyi6,9; Shen, Zhenxing1; Guinot, Benjamin8; Xu, Hongmei1,9 | |
刊名 | ATMOSPHERE
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2015-03-01 | |
卷号 | 6期号:3页码:361-379 |
ISSN号 | 2073-4433 |
DOI | 10.3390/atmos6030361 |
文献子类 | Article |
英文摘要 | 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关键词 | River Delta Region ; Particulate Matter ; Chemical-composition ; Seasonal-variations ; Black-carbon ; Hong-kong ; Indoor/outdoor Relationships ; Particle Concentrations ; Source Apportionment ; Aerosol Formation |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | MDPI AG |
WOS记录号 | WOS:000351941800008 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/9325] ![]() |
专题 | 地球环境研究所_粉尘与环境研究室 |
通讯作者 | Xu, Hongmei |
作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 3.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Air Pollut Studies, Galway, Ireland 4.PSI, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 5.Shaanxi Meteorol Bur, Xian 710014, Peoples R China 6.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China 7.Chinese Univ Hong Kong, Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China 8.Univ Toulouse, CNRS, Observ Midi Pyrenees, Lab Aerol, F-31400 Toulouse, France 9.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China |
推荐引用方式 GB/T 7714 | Ho, Kin Fai,Cao, Junji,Huang, Ru-Jin,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 | Ho, Kin Fai.,Cao, Junji.,Huang, Ru-Jin.,Xiao, Shun.,Niu, Xinyi.,...&Xu, Hongmei.(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 | Ho, Kin Fai,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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