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Seasonal characteristics of ambient volatile organic compounds in Seoul, Korea

Title
Seasonal characteristics of ambient volatile organic compounds in Seoul, Korea
Authors
Na K.Kim Y.P.
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2001
Journal Title
Atmospheric Environment
ISSN
1352-2310JCR Link
Citation
vol. 35, no. 15, pp. 2603 - 2614
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The measurements of C 2-C 9 volatile organic compounds (VOC) were carried out at a site in Seoul, the capital of Korea from August 1998 to July 1999. Air samples were collected for 24h in 6l SUMMA canisters every 6 days. The canister samples were quantitatively analyzed by a GC/FID and GC/MS. The species with the highest mean concentration among the 70 identified was propane (7.8ppb), followed by toluene (6.4ppb) and ethylene (5.9ppb). The high concentration of propane was mainly attributed to the emissions by liquefied petroleum gas (LPG) usage for cooking and heating, and butane fuel for transportation. The general trend of the seasonal variation shows higher concentrations in winter and lower ones in summer. This behavior was mainly caused by the variations of temperature, and resultant VOC source strengths, coupled with the variations of the mixing depth. According to the analysis of concentration ratios, the seasonal contributions of the major emission sources to the VOC concentrations were influenced by ambient temperature. Further, it was identified that the contributions by the use of solvents, natural gas, LPG, and butane fuel were closely related to the variations of consumption pattern according to seasons. Through the analysis of the concentration correlations between less reactive compound and highly reactive ones for summer and winter months, it was found that photochemical reactivity affects relative concentration of reactive compound. Copyright © 2001 Elsevier Science Ltd.
DOI
10.1016/S1352-2310(00)00464-7
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엘텍공과대학 > 화학신소재공학전공 > Journal papers
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