Journal of the Korean Society of Urban Environment (한국도시환경학회지)

The Korean Society of Urban Environment (한국도시환경학회)
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A Study on the Improvement Repeatability and Accuracy of the Analysis Method for SF6 of Trace Level

극미량 수준의 SF6 측정법에 따른 재현성 및 정확도 향상에 관한 연구

  • Yoo, Heejung (Environmental Meteorology Analysis, National Institute of Meteorological Sciences) ;
  • Choe, Hongwoo (Environmental Meteorology Analysis, National Institute of Meteorological Sciences) ;
  • Lee, Sepyo (Environmental Meteorology Analysis, National Institute of Meteorological Sciences) ;
  • Kim, Jongho (Department of Environmental Engineering, Hanseo University) ;
  • Han, Sangok (Environmental Meteorology Analysis, National Institute of Meteorological Sciences) ;
  • Ryoo, Sangboom (Environmental Meteorology Analysis, National Institute of Meteorological Sciences)
  • 유희정 (국립기상과학원 환경기상연구과) ;
  • 최홍우 (국립기상과학원 환경기상연구과) ;
  • 이세표 (국립기상과학원 환경기상연구과) ;
  • 김종호 (한서대학교 대학원 환경공학과) ;
  • 한상옥 (국립기상과학원 환경기상연구과) ;
  • 류상범 (국립기상과학원 환경기상연구과)
  • Received : 2018.11.16
  • Accepted : 2018.12.21
  • Published : 2018.12.31
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Abstract

Kyoto Protocol, adopted in 1997, set the obligation to reduce $CO_2$, $CH_4$, $N_2O$, HFCs, PFCs, and $SF_6$ in developed countries during 1st promised period. $SF_6$ has been drawing a lot of attention since the Kyoto Protocol because once it is released into the atmosphere, it not only stays in the atmosphere for more than 3,200 years but also emits 22,800 times stronger global warming potential at the same concentrations as $CO_2$ if remains in the atmosphere for 100 years. This study introduces 12 methods for $SF_6$ of measuring trace. $SF_6$ of trace level in the atmosphere correctly, the measurement method was changed and as a result, when the back flush method was applied to the pre-concentration system that used low-temperature concentration and high-temperature desorption system, which used Carboxen-1000 adsorption trap, the effect was the best.

오존층의 파괴물질인 CFCs의 대체물로써 $SF_6$의 사용량이 늘어나면서 대기 중의 $SF_6$의 농도가 높아지고 있다. $SF_6$은 지구온난화가스중의 하나로써 대기 중에서 3,200년 이상 머무를 뿐만 아니라 온난화지수도 매우 높아 무려 22,800이나 된다. 그러나, 대기 중에서의 $SF_6$ 농도는 낮은 수준이어서 검출한계이하인 경우가 많다. 본 연구에서는 이러한 극미량 $SF_6$ 농도를 정확하게 분석하기 위해서 $GC-{\mu}ECD$를 이용한 12가지 분석방법을 실험적으로 고찰하였다. 극미량 $SF_6$ 농도를 가장 정확하게 분석할 수 있는 방법은 Carboxen-1000 물질을 사용한 흡착관과 저온농축 고온탈착 방식의 농축장치에 역추출방식의 분석법을 사용할 경우가 최상의 효율을 나타냈다.

Keywords

Acknowledgement

Grant : 황사, 연무 감시 및 예보기술 개발

Supported by : 국립기상과학원

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