The Journal of Engineering Geology (지질공학)

The Korean Society of Engineering Geology (대한지질공학회)
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Hydrogeochemical Characterization of Natural Radionuclides Uranium and Radon in Groundwater, Jeonnam Province

전라남도 일대 지하수 중에서 산출하는 자연방사성물질 우라늄과 라돈의 수리지구화학적 거동특징

  • Cho, Byong Wook (Groundwater and Ecohydrology Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Moon Su (Soil and Groundwater Research Division, National Institute of Environmental Research) ;
  • Kim, Hyun Gu (Soil and Groundwater Research Division, National Institute of Environmental Research) ;
  • Hwang, Jae Hong (Groundwater and Ecohydrology Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Cho, Soo Young (Groundwater and Ecohydrology Research Center, Korea Institute of Geoscience and Mineral Resources) ;
  • Choo, Chang Oh (Department of Earth and Environmental Sciences, Andong National University)
  • 조병욱 (한국지질자원연구원) ;
  • 김문수 (국립환경과학원 토양지하수연구과) ;
  • 김현구 (국립환경과학원 토양지하수연구과) ;
  • 황재홍 (한국지질자원연구원) ;
  • 조수영 (한국지질자원연구원) ;
  • 추창오 (국립안동대학교 지구환경과학과)
  • Received : 2017.12.12
  • Accepted : 2017.12.21
  • Published : 2017.12.30
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Abstract

Natural radionuclides such as uranium and radon from 170 groundwater wells in Jeonnam Province were investigated, together with hydrogeochemical properties, and concentration maps of uranium and radon were also constructed in this study. Characteristics of their concentrations and occurrence were discussed using hydrogeochemical factors and geostatistical methods based on individual geological units. Though uranium and radon in groundwater show a wide range in the concentration, most of which occur as low levels except a few sites. Based on factor analysis, correlation coefficients between uranium and radon are very low. Such results verify that these radionuclides behave independently, well consistent with most previous results investigated nationwide in groundwater. Besides uranium and radon, most hydrochemical components in groundwater show a close relation to indicate the water-rock interaction taken place actively in aquifer.

이 연구에서는 전라남도 지역의 지하수 170개 소를 대상으로 자연방사성물질인 우라늄, 라돈을 분석하였으며, 지질별로 구분하여 이들의 함량특성을 지구화학적, 통계적으로 고찰하였다. 또한 우라늄과 라돈의 함량을 지질도에 표기하여 이들의 함량분포도를 작성하였다. 우라늄과 라돈의 함량범위는 넓지만 일부 시료를 제외하면 낮은 값을 보인다. 요인분석 결과에 의하면 전남지역의 지하수에서 우라늄과 라돈간의 상관계수는 낮아서, 이 두 성분은 서로 다른 거동특성을 가지는 것으로 판단된다. 서로 거의 무관한 거동특성을 보여주는 이러한 결과는 국내 대부분의 지하수중 우라늄, 라돈 연구결과와도 일치한다. 이들을 제외하면 주요 수질항목들 간에는 높은 상관계수가 나타나는데, 이들은 일반적인 물-암석반응의 결과임을 지시한다.

Keywords

References

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