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Characteristics and sources ofcarbonaceous aerosols from Shanghai,China
Cao,JJ[1,2]; Zhu,CS[1]; Tie,XX[1,3]; Geng,FH[4]; Xu,HM[1]; Ho,SSH[1]; Wang,GH[1]; Han,YM[1]; Ho,KF[5]
Source PublicationAtmospheric Chemistry and Physics Discussions
AbstractAn intensive investigation of carbonaceous PM2.5 and TSP from Pudong (China) was conducted as part of the MIRAGE-Shanghai Experiment in 2009. Data for organic and elemental carbon (OC and EC), organic species, including C17 to C40 n-alkanes and 17 polycyclic aromatic hydrocarbons (PAHs), and stable C isotopes OC (δ13COC) and EC (δ13CEC) were used to evaluate the aerosols’ temporal variations and identify presumptive sources. High OC/EC ratios indicated a large fraction of secondary organic aerosol (SOA); high char/soot ratios indicated stronger contributions to EC from motor vehicles and coal combustion than biomass burning. Diagnostic ratios of PAHs indi-cated that much of the SOA was produced via coal combustion. Isotope abundances (δ13COC = −24.5 ± 0.8‰ and δ13CEC = −25.1 ± 0.6‰) indicated that fossil fuels were the most important source for carbonaceous PM2.5, with lesser impacts from biomass burning and natural sources. An EC tracer system and isotope mass balance calculations showed that the relative contributions to total carbon from coal combustion, motor vehicle exhaust, and SOA were 41 %, 21 %, and 31 %: other primary sources such as marine, soil and biogenic emissions contributed 7 %. Combined analyses of OC and EC, n-alkanes and PAHs, and stable carbon isotopes provide a new way to apportion the sources of carbonaceous particles.
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Document Type期刊论文
Corresponding AuthorCao,JJ[1,2]
Affiliation1.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy ofSciences, Xi’an, China;
2.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China;
3.National Center for Atmospheric Research, Boulder, CO, USA;
4.Shanghai Meteorological Bureau, Shanghai, China;
5.Chinese University of Hong Kong, Hong Kong, China
Recommended Citation
GB/T 7714
Cao,JJ[1,2],Zhu,CS[1],Tie,XX[1,3],et al. Characteristics and sources ofcarbonaceous aerosols from Shanghai,China[J]. Atmospheric Chemistry and Physics Discussions,2012,12:16811-16849.
APA Cao,JJ[1,2].,Zhu,CS[1].,Tie,XX[1,3].,Geng,FH[4].,Xu,HM[1].,...&Ho,KF[5].(2012).Characteristics and sources ofcarbonaceous aerosols from Shanghai,China.Atmospheric Chemistry and Physics Discussions,12,16811-16849.
MLA Cao,JJ[1,2],et al."Characteristics and sources ofcarbonaceous aerosols from Shanghai,China".Atmospheric Chemistry and Physics Discussions 12(2012):16811-16849.
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