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  • A Preliminary Study for the Analytical Method and Environmental Characteristics of Radium-226 in Groundwater
  • Jeong, Do-Hwan;Kim, Moon--Su;Noh, Hoe-Jung;Yoon, Yoon-Yeol;Kim, Dong-Soo;Lee, Young-Joon;Ju, Byoung-Kyu;Hong, Jung-Ki;Kim, Tae-Seung;
  • National Institute of Environmental Research;National Institute of Environmental Research;National Institute of Environmental Research;Korea Institute of Geoscience and Mineral Resources;National Institute of Environmental Research;National Institute of Environmental Research;National Institute of Environmental Research;National Institute of Environmental Research;National Institute of Environmental Research;
  • 지하수 중 라듐-226의 분석방법 및 환경 특성에 관한 예비 연구
  • 정도환;김문수;노회정;윤윤열;김동수;이영준;주병규;홍정기;김태승;
  • 국립환경과학원;국립환경과학원;국립환경과학원;한국지질자원연구원;국립환경과학원;국립환경과학원;국립환경과학원;국립환경과학원;국립환경과학원;
Abstract
226Ra in groundwater could be analyzed by various methods. LSC (liquid scintillation counter) is used to measure its activity of Ba co-precipitates with Hisafe III scintillation cocktail solution. Counting efficiency was obtained using NIST 226Ra standard solution in triplicate and calculated 226Ra concentration using the efficiency values. 226Ra values of 19 groundwaters having Gross-α concentrations of more than 5 pCi/L ranged from ND (≤ 0.1 pCi/L) to 1.18 pCi/L. Geologic settings of the 19 areas are composed of granitic rocks of Pre-Cambrian and Jurassic and Cretaceous, gneiss (schist) of Pre-Cambrian, and volcanic rocks of Cretaceous. No relationship was shown among 226Ra a concentrations and in-situ water quality data, and Gross-α, uranium, radon concentrations.

Keywords: 226Ra;LSC;Gross-α;Uranium;Geologic setting;

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