Concentrations of $C_2$~$C_9$ Volatile Organic Compounds in Ambient Air in Seoul

서울 대기 중에서 $C_2$~$C_9$ 휘발성 유기화합물의 농도

  • 나광삼 (한국과학기술연구원 지구환경 연구센터) ;
  • 김용표 (한국과학기술연구원 지구환경 연구센터) ;
  • 김영성
  • Published : 1998.04.01

Abstract

Volatile organic compounds (VOCs) from Ca to C9 were investigated with nine ambient air samples collected in April 26, August 17, 1996 and January 23, 1997 in a Seoul site. On each sampling day, three 2-hr integrated canister samples were collected in early morning, early afternoon and late afternoon, respectively to study temporal . variation of VOCs. Most of VOC species showed diurnal variation with higher concentrations in the early morning and lower concentrations in the afternoon. The concentrations of light alkanes were high, probably due to the emission from liquefied petroleum gas (LPG) and evaporation of gasoline. Especially, the concentration of propane was the highest in the morning samples. The concentrations of propane, ethylene, acetylene, and toluene were prominent in their hydrocarbon groups, respectively. These components were the main source of car exhaust, gasoline evaporization, LPG, or solvent usage.

Keywords

volatile organic compounds;Seoul;vehicle emissions;hazardous air pollutions;liquefied petroleum gas

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