Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Concentration Variation of Atmospheric Radon and Gaseous Pollutants Related to the Airflow Transport Pathways during 2010~2015

대기 라돈 및 기체상 오염물질의 기류 이동경로별 농도변화: 2010~2015년 측정

  • Song, Jung-Min (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Kim, Ki-Ju (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Bu, Jun-Oh (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Kim, Won-Hyung (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Kang, Chang-Hee (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Chambers, S. (Australian Nuclear Science and Technology Organisation)
  • 송정민 (제주대학교 화학.코스메틱스학과) ;
  • 김기주 (제주대학교 화학.코스메틱스학과) ;
  • 부준오 (제주대학교 화학.코스메틱스학과) ;
  • 김원형 (제주대학교 화학.코스메틱스학과) ;
  • 강창희 (제주대학교 화학.코스메틱스학과) ;
  • Received : 2018.03.05
  • Accepted : 2018.03.22
  • Published : 2018.04.30
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Abstract

Concentrations of the atmospheric radon and gaseous pollutants were measured at the Gosan site on Jeju Island from 2010 to 2015, in order to observe their time-series variation characteristics and examine the concentration change related to the airflow transport pathways. Based on the realtime monitoring of the atmospheric radon and gaseous pollutants, the daily mean concentrations of radon ($^{222}Rn$) and gaseous pollutants($SO_2$, CO, $O_3$, $NO_x$) were $2,400mBq\;m^{-3}$ and 1.3, 377.6, 41.1, 3.9 ppb, respectively. On monthly variations of radon, the mean concentration in October was the highest as $3,033mBq\;m^{-3}$, almost twice as that in July ($1,452mBq\;m^{-3}$). The diurnal variation of radon concentration shows bimodal curves at early morning (around 7 a.m.) and near midnight, whereas its lowest concentration was recorded at around 3 p.m. Several gaseous pollutants($SO_2$, CO, $NO_x$) showed a similar seasonal variation with radon concentration as high in winter and low in summer, whereas the $O_3$ concentrations had a bit different seasonal trend. According to the cluster back trajectory analysis, the frequencies of airflow pathways moving from continental North China, East China, Japan and the East Sea, the Korean Peninsula, and North Pacific Ocean routes were 36, 37, 10, 13, and 4%, respectively. When the airflow were moved to Jeju Island from continental China, the concentrations of radon and gaseous pollutants were relatively high. On the other hand, when the airflows were moved from North Pacific Ocean and East Sea, their concentrations were much lower than those from continental China.

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References

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