Speciation and source identification of organic compounds in PM10 over Seoul, South Korea

被引:40
作者
Choi, Na Rae [1 ]
Lee, Se Pyo [2 ]
Lee, Ji Yi [2 ]
Jung, Chang Hoon [3 ]
Kim, Yong Pyo [1 ,4 ]
机构
[1] Ewha Womans Univ, Dept Environm Sci & Engn, Seoul 120750, South Korea
[2] Chosun Univ, Dept Renewable Energy Convergence, Kwangju 501759, South Korea
[3] Kyungin Womens Coll, Dept Hlth Management, Inchon 407740, South Korea
[4] Ewha Womans Univ, Dept Chem Engn & Mat Sci, Seoul 120750, South Korea
关键词
Organic aerosols; n-Alkanes; Polycyclic aromatic carbons; Mono-carboxylic acids; Dicarboxylic acids; Sugars; Seoul; POLYCYCLIC AROMATIC-HYDROCARBONS; BIOMASS-BURNING CONTRIBUTION; LONG-RANGE TRANSPORT; RIVER DELTA REGION; DICARBOXYLIC-ACIDS; PARTICULATE PAHS; KETOCARBOXYLIC ACIDS; SOURCE APPORTIONMENT; SEASONAL-VARIATIONS; MOLECULAR MARKER;
D O I
10.1016/j.chemosphere.2015.10.041
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Seventy three individual organic compounds in the atmospheric particulate matter with an aerodynamic diameter of less than or equal to a nominal 10 mu m (PM10) over Seoul were identified and quantified from April 2010 to April 2011 using gas chromatography/mass spectrometry (GC/MS). These organic compounds were classified into five groups, n-alkanes, polycyclic aromatic hydrocarbons (PAHs), monocarboxylic acids, di-carboxylic acids (DCAs), and sugars based on their chemical structures and properties. The organic compounds showed higher seasonal average concentrations from fall to winter than from spring to summer due to source strength, except some organic compounds among mono-carboxylic acids, DCAs, sugars such as undecanoic acid, methylmalonic acid, and fructose. Through qualitative data analysis using seasonal concentration variations and relevant diagnostic parameters, it was found that (1) anthropogenic sources such as combustion of fossil fuel and biomass burning attributed more to the formation of the organic aerosols than biogenic sources, and (2) the ambient level of n-alkanes, PAHs, and some compounds of DCAs and sugars was elevated in winter due to the increased primary emissions and larger transport from outside of the organic compounds in winter. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1589 / 1596
页数:8
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