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Chemical composition of PM2.5 at an urban site of Chengdu in southwestern China
Tao, J (Tao Jun)[ 1 ]; Cheng, TT (Cheng Tiantao)[ 2 ]; Zhang, RJ (Zhang Renjian)[ 3 ]; Cao, JJ (Cao Junji)[ 4 ]; Zhu, LH (Zhu Lihua)[ 1 ]; Wang, QY (Wang Qiyuan)[ 4 ]; Luo, L (Luo Lei)[ 5 ]; Zhang, LM (Zhang Leiming)[ 3,6 ]
2013-07-30
Source PublicationADVANCES IN ATMOSPHERIC SCIENCES
Volume30Issue:4Pages:1070-1084
Subtype期刊论文
Abstract

PM2.5 aerosols were sampled in urban Chengdu from April 2009 to January 2010, and their chemical compositions were characterized in detail for elements, water soluble inorganic ions, and carbonaceous matter. The annual average of PM2.5 was 165 mu g m(-3), which is generally higher than measurements in other Chinese cities, suggesting serious particulate pollution issues in the city. Water soluble ions contributed 43.5% to the annual total PM2.5 mass, carbonaceous aerosols including elemental carbon and organic carbon contributed 32.0%, and trace elements contributed 13.8%. Distinct daily and seasonal variations were observed in the mass concentrations of PM2.5 and its components, reflecting the seasonal variations of different anthropogenic and natural sources. Weakly acidic to neutral particles were found for PM2.5. Major sources of PM2.5 identified from source apportionment analysis included coal combustion, traffic exhaust, biomass burning, soil dust, and construction dust emissions. The low nitrate: sulfate ratio suggested that stationary emissions were more important than vehicle emissions. The reconstructed masses of ammonium sulfate, ammonium nitrate, particulate carbonaceous matter, and fine soil accounted for 79% of the total measured PM2.5 mass; they also accounted for 92% of the total measured particle scattering.

KeywordWater Soluble Ions Carbonaceous Matters Trace Elements Enrichment Factor Source Apportionment Mass Closure
DOI10.1007/s00376-012-2168-7
Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9997
Collection粉尘与环境研究室
Corresponding AuthorCheng, TT (Cheng Tiantao)[ 2 ]
Affiliation1.South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655;
2.Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention,Department of Environment Science and Engineering, Fudan University, Shanghai 200433;
3.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia,Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;
4.Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075;
5.Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610071;
6.Air Quality Research Division, Science and Technology Branch, Environment Canada, Toronto, Canada
Recommended Citation
GB/T 7714
Tao, J ,Cheng, TT ,Zhang, RJ ,et al. Chemical composition of PM2.5 at an urban site of Chengdu in southwestern China[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2013,30(4):1070-1084.
APA Tao, J .,Cheng, TT .,Zhang, RJ .,Cao, JJ .,Zhu, LH .,...&Zhang, LM .(2013).Chemical composition of PM2.5 at an urban site of Chengdu in southwestern China.ADVANCES IN ATMOSPHERIC SCIENCES,30(4),1070-1084.
MLA Tao, J ,et al."Chemical composition of PM2.5 at an urban site of Chengdu in southwestern China".ADVANCES IN ATMOSPHERIC SCIENCES 30.4(2013):1070-1084.
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