Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Radon and TSP Concentrations in the Ambient Air of Gosan Area, Jeiu Island between 2001 and 2004

제주도 고산지역의 라돈 및 TSP 에어로졸 농도 특성: 2001~2004년 측정

  • Kang, Chang-Hee (Research Institute for Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Ko, Hee-Jung (Research Institute for Basic Sciences and Department of Chemistry, Cheju National University) ;
  • Zahorowski, Wlodek (Environmental Division, Australian Nuclear Science and Technology Organisation)
  • 강창희 (제주대학교 기초과학연구소.화학과) ;
  • 고희정 (제주대학교 기초과학연구소.화학과) ;
  • Published : 2007.10.31
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Abstract

The real-time monitoring of radon ($^{222}Rn$) concentrations has been carried out to evaluate its ambient background concentration levels in Gosan site, Jeju Island between January 2001 and December 2004. In addition, the atmospheric TSP aerosols have been sampled, and their ionic and metallic components were analyzed to understand the characteristics of air pollution. The mean concentration of radon was $3,121{\pm}1,627\;mBq/m^3$, and the seasonal mean concentrations for spring, summer, fall and winter seasons were 2,898, 2,398, 3,571 and $3,646\;mBq/m^3$, respectively, The hourly concentrations have shown the highest value at 7 a.m. and the lowest value at 2 p.m. From the backward trajectory analyses, the radon concentrations have increased, when the air parcels were moved from the Chinese continent to Jeju area. On the other hand, they have decreased, when the air parcels from the North Pacific Ocean. In the analytical results of ionic species and metal elements of TSP aerosols, the concentrations of $nss-{SO_4}^{2-}$ and S were higher in June and March. Meanwhile, the concentrations of other anthropogenic species as well as soil components were mostly higher in March and April. On the basis of factor analysis, the TSP aerosols at Gosan area were largely influenced by soil sources, followed by anthropogenic sources and marine sources. From the result of backward trajectory analyses, the concentrations of $nss-{SO_4}^{2-},\;{NO_3}^-$, Al and Ca were mostly higher, when the air parcels moved from Chinese continent to Jeju area. On the other hand, their concentrations were lower, when the air parcels drifted from the North Pacific Ocean.

Keywords

References

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