Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Continuous Measurements of Reduced Sulfur Gases in Urban Air

연속측정방법을 이용한 도심권 대기질 내 저농도 황화합물의 관측에 대한 연구

  • 최여진 (세종대학교 지구환경과학과 대기환경연구실) ;
  • 김기현 (세종대학교 지구환경과학과 대기환경연구실, 경희대학교 환경연구센터) ;
  • 오상인 (세종대학교 지구환경과학과 대기환경연구실) ;
  • 손장호 (동의대학교 환경공학과)
  • Published : 2004.04.01
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Abstract

In this study, the concentrations of major reduced sulfur compounds (H$_2$S, $CH_3$SH, DMS, and DMDS) were determined from ambient air in a monitoring station located in the mid-eastern area of Seoul. Measurements of sulfur species were conducted by the combination of on -line air sampling, thermal desorption, and capillary GC/PFPD analysis. A total number of 143 hourly samples were collected in the two time periods set between June and July 2003. The mean concentrations of four sulfur species measured in the whole study period were found on the order: DMS (535$\pm$183) > H$_2$S (47$\pm$10) > DMDS (35$\pm$22) > $CH_3$SH (6.19$\pm$29.4 pptv). The results of this study show that the concentrations of DMS at the study area are generally higher than those reported previously in the oceanic environments, while those of other sulfur species are not easy to compare with due to the lack of data. The H$_2$S concentrations were generally higher during the daytime than the nighttime, whereas those of others generally exhibited a reversed diurnal pattern. The overall results of our study suggest that the distribution of major reduced S compounds should be controlled by diverse processes in the urban area.

Keywords

References

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