Journal of Climate Change Research (한국기후변화학회지)

The Korean Society of Climate Change Research (한국기후변화학회)
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Temporal Variability of N2O Gas Concentration Collected in Tedlar Bag

테들러백에서 N2O농도의 시간적 변동성 연구

  • Hong, Yoonjung (Sejong Climate Change Research Center) ;
  • Kang, Seongmin (Dept. of Environment and Energy, Sejong Graduate School) ;
  • Cho, Changsang (Sejong Climate Change Research Center) ;
  • Yun, Hyun-Ki (Dept. of Environment and Energy, Sejong Graduate School) ;
  • Jeon, Eui Chan (Dept. of Environment, Energy and Geoinformatics, Sejong University)
  • 홍윤정 (세종대학교 기후변화센터) ;
  • 강성민 (세종대학교 환경에너지융합학과) ;
  • 조창상 (세종대학교 기후변화센터) ;
  • 윤현기 (세종대학교 환경에너지융합학과) ;
  • 전의찬 (세종대학교 환경에너지공간융합학과)
  • Received : 2017.12.15
  • Accepted : 2018.01.22
  • Published : 2018.03.31
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Abstract

In this study, the $N_2O$, emitted from combustion facility, were analyzed by using simulated gas and field samples to find out how long samples can be stored in Tedlar bag. According to the results of the experiment using simulated gases (1 ppm, 5 ppm, 10 ppm) in Tedlar bag, After 144hr, $N_2O$ concentration of simulated gases changed that 1 ppm is 5.3%, 5 ppm is 12.8%, and 10ppm is 10.5%. The higher initial concentration of simulated gas was, the larger rate of $N_2O$ concentration was changed. In case of high concentration samples, it need to be careful when it was analyzed after 144 hr. Stability evaluation in Tedlar bag was carried out through field samples such as combustion facility of bituminous coal, B-C oil and LNG. The concentration rate of field samples, which is under 1 ppm of average initial concentration, was evaluated using statistical method. As a result, $N_2O$ concentrations were changed to field samples in the bag even when 96 hr had passed. And after sampling, it is necessary that sample analysis should be quickly as soon as possible.

Keywords

Acknowledgement

Supported by : 환경부