Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Analysis of Organic Compounds in Ambient PM2.5 over Seoul using Thermal Desorption-comprehensive Two Dimensional Gas Chromatography-time of Flight Mass Spectrometry (TD-GCxGC-TOFMS)

Thermal Desorption-comprehensive Two Dimensional Gas Chromatography-time of Flight Mass Spectrometry (TD-GCxGC-TOFMS)을 이용한 서울 대기 중 PM2.5 유기성분 분석

  • Lee, Ji-Yi (Air Quality Research Division, Science and Technology Branch, Environment Canada) ;
  • Lane, Douglas A. (Air Quality Research Division, Science and Technology Branch, Environment Canada) ;
  • Huh, Jong-Bae (Department of Environmental Health, School of Public Health, Seoul National University) ;
  • Yi, Sung-Muk (Department of Environmental Health, School of Public Health, Seoul National University) ;
  • Kim, Yong-Pyo (Department of Environmental Science and Engineering, Ewha Womans University)
  • 이지이 (캐나다 환경부) ;
  • ;
  • 허종배 (서울대학교 보건대학원 환경보건학과) ;
  • 이승묵 (서울대학교 보건대학원 환경보건학과) ;
  • 김용표 (이화여자대학교 환경공학과)
  • Published : 2009.10.31
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Abstract

Characteristics and advantages of the thermal desorption-comprehensive two dimensional gas chromatography-time of flight mass spectrometry (TD-GCxGC-TOFMS) were discussed and the organic compound's analysis result was shown for the ambient $PM_{2.5}$ sample collected in Seoul, Korea. Over 10,000 individual organic compounds were separated from about $70{\mu}g$ of aerosols in a single procedure with no sample pre-treatment. Among them, around 300 compounds were identified and classified based on the mass fragmentation patterns and GCxGC retention times. Several aliphatic compounds groups such as alkanes, alkenes, cycloalkanes, alkanoic acids, and alkan-2-ones were identified as well as 72 PAH compounds including alkyl substituted compounds and 8 hopanes. In Seoul aerosol, numerous oxidized aromatic compounds including major components of secondary organic aerosols were observed. The inventory of organic compounds in $PM_{2.5}$ of Seoul, Korea suggested that organic aerosol were constituted by the compounds of primary source emission as well as the formation of secondary organic aerosols.

Keywords

References

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