Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Temporal Variability of Reduced Sulfur Compounds (RSC) Collected in Tedlar Bag: Simulation of Sample Stability in the Emission Sources

배출원에서의 Tedlar-bag 시료채집법을 이용한 황화합물의 경시적 농도 변화에 대한 연구

  • Jo, Hyo-Jae (Department of Environment & Energy, Sejong University) ;
  • Shon, Zang-Ho (Department of Environmental Engineering, Dong-Eui University) ;
  • Hong, One-Feel (Department of Environment & Energy, Sejong University) ;
  • Kim, Ki-Hyun (Department of Environment & Energy, Sejong University)
  • 조효재 (세종대학교 환경에너지융합학과) ;
  • 손장호 (동의대학교 환경공학과) ;
  • 홍원필 (세종대학교 환경에너지융합학과) ;
  • 김기현 (세종대학교 환경에너지융합학과)
  • Received : 2010.11.15
  • Accepted : 2011.04.20
  • Published : 2011.06.30
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Abstract

In this study, a series of experiments were carried out to measure temporal stability of reduced sulfur compounds (RSCs) in Tedlar bag samples as a function of elapsed storage time. To this end, temporal variability of 4 RSC standard gases ($H_2S$, $CH_3SH$, DMS, DMDS) was measured up to 29 days. For the purpose of comparison, RSC samples were stored in both individual and mixed state. In the case of mixed standard, samples were also examined to allow comparison between light and dark condition. Then results of $CH_3SH$ data were the most stable with the least change in its concentrations through the end of exps (29 days). When compared with previous studies, the extent of stability appeared to be influenced by the initial concentration levels of samples. When the patterns were compared between individual and mixture samples, differences were not significant in the case of $H_2S$ and DMS. The effects of light conditions on temporal stability were seen to be fairly sensitive on most RSC other than $H_2S$. The results of our study confirm that the stability of RSC storage is affected by their involvement in photochemical reactions.

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References

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