한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제13권5호
  • /
  • Pages.355-360
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  • 1997
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  • 1598-7132(pISSN)
  • /
  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
권호 표지

비냉각형 선농축 방식에 의한 대기 중 휘발성 황화합물의 분석방법 개발

Development of an Analytical Approach to Measure Volatile Sulfur Compounds Using a Non-Cryogenic Preconcentration Method

  • 김기현 (상지대학교 환경과학연구소) ;
  • 이강웅 (한국외국어대학교 환경학과)
  • 발행 : 1997.10.01
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초록

The atmospheric concentration of dimethylsulfide (DMS), known as the predominant volatile organic. sulfur compound, is determined at subnanogram level by a combined application of non-cryogenic preconcentration method and gas chromatography with flame photometric detection (GC/FPD). The volatile DMS in air is preconcentrated using a trapping tube containing adsorbent like Molecular Sieve 5A (or gold-coated sands). The tube is then connected to the GC/FPD system via a six-way rotary valve, thermally desorbed at 40$0^{\circ}C$, separated on OV101 column, and detected by a flame photometric detector. The DMS peak elutes at about 2.5 mins and is integrated electronically. The analytical precision, if expressed in terms of relative standard error, is around 5%. The detection limit of our GC/FPD system is ca 1 ng of DMS. Details of our analytical system are presented.

키워드

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