Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Quantification of Volatile Organic Compounds in Gas Sample Using Headspace Solid-Phase Microextraction

고상 미세 추출법을 이용한 가스시료 중 휘발성유기화합물의 정량 분석

  • Kim, Jae Hyuck (Hazardous Air Pollutants Management Team, Korea Environment Corporation) ;
  • Kim, Hyunook (Department of Environmental Engineering, University of Seoul)
  • 김재혁 (한국환경공단 유해대기관리팀) ;
  • 김현욱 (서울시립대학교 환경공학과)
  • Received : 2013.09.13
  • Accepted : 2013.11.25
  • Published : 2013.12.30
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Abstract

The purpose of this study is to quantify volatile organic compounds (VOCs) in gas sample using headspace solid-phase microextraction (HS-SPME) coupled to GC analysis. The optimal HS-SPME conditions was CAR/PDMS fiber and 30 min absorprion time for the analysis of various VOCs. In optimal conditions, 80 VOCs could be detected within 1 ppbv and even less than 0.0005 ppbv especially in the case of BTEX. However, fiber reproducibility on adsorption efficiency was 1~9.2% (between the same fiber) and 5.9~13.5% (between the other fiber). We successfully determined 35 VOCs in landfill gas with this method and found that VOCs of high concentration are emitting from vent pipe of closed/open landfill site under the HS-SPME conditions. This method may apply to VOCs/odor determination from various atmospheric environmental samples as well as landfills.

본 연구에서는 고상 미세추출법(HS-SPME)을 적용하여 대기환경시료 중 VOCs 분석을 위한 응용성을 평가하고자 하였다. 광범위한 VOCs 검출을 위한 최적 HS-SPME 분석 조건(CAR/PDMS fiber, 30분 시료노출, 도출된 분석조건)에서 VOCs의 검출 한계 농도는 저분자량 화합물인 경우 1~3 ppbv 내외였고, BTEXs 계열 화합물들의 경우에는 0.0005 ppbv 이하의 매우 낮은 농도까지 검출 가능하였다. 다만 fiber들 간의 흡착효율 재현성 평가결과, 동일 fiber에 대하여 1~9.2% (n = 3), 서로 다른 fiber들에 대하여서는 5.9~13.5% (n = 5)의 오차를 보였다. 도출된 분석조건을 이용하여 매립지 가스 중 BTEX를 포함한 35여종의 VOCs를 성공적으로 정량분석하였다.

Keywords

References

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