Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Distribution Characteristics of Uranium and Radon Concentrations of Groundwater in Gwangju Area

광주지역 지하수 중 우라늄과 라돈의 함량 분포 특성

  • Seo, Heejeong (Health and Environment Research Institute of Gwangju) ;
  • Min, Kyoungwoo (Health and Environment Research Institute of Gwangju) ;
  • Park, Jiyoung (Health and Environment Research Institute of Gwangju) ;
  • Park, Juhyun (Health and Environment Research Institute of Gwangju) ;
  • Hwang, Hoyeon (Health and Environment Research Institute of Gwangju) ;
  • Park, Seil (Health and Environment Research Institute of Gwangju) ;
  • Kim, Seonjeong (Health and Environment Research Institute of Gwangju) ;
  • Jeong, Sukkyung (Health and Environment Research Institute of Gwangju) ;
  • Bae, Seokjin (Health and Environment Research Institute of Gwangju) ;
  • Kim, Seongjun (Department of Environmental and Energy Engineering, Chonnam National University)
  • 서희정 (광주광역시보건환경연구원) ;
  • 민경우 (광주광역시보건환경연구원) ;
  • 박지영 (광주광역시보건환경연구원) ;
  • 박주현 (광주광역시보건환경연구원) ;
  • 황호연 (광주광역시보건환경연구원) ;
  • 박세일 (광주광역시보건환경연구원) ;
  • 김선정 (광주광역시보건환경연구원) ;
  • 정숙경 (광주광역시보건환경연구원) ;
  • 배석진 (광주광역시보건환경연구원) ;
  • 김성준 (전남대학교 환경에너지공학과)
  • Received : 2022.03.01
  • Accepted : 2022.03.21
  • Published : 2022.04.30
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Abstract

Background: As high concentrations of uranium and radon have been detected in some areas in Korea, it is considered necessary to investigate natural radioactive materials in the Gwangju area. Objectives: This study aimed to identify the hydrochemical characteristics of groundwater in Gwangju and investigate the distribution characteristics of uranium and radon, which are naturally radioactive substances. Methods: To determine the uranium and radon concentrations in groundwater according to the geology of the Gwangju area, we measured 62 groundwater wells. A geological distribution map of uranium and radon content was prepared for this study. Results: The groundwater type, defined using a Piper diagram, was mainly Ca-HCO3. The concentration of uranium in the groundwater ranged from 0 to 29.3 ㎍/L, with a mean of 3.3 ㎍/L and a median of 0.9 ㎍/L. The median concentration of uranium in groundwater was highest in alluvium, granitic gneiss, and biotite granite (classified by geological unit), in that order. The concentration of radon in the groundwater ranged from 4.8 to 313.2 Bq/L, with a mean of 75.6 Bq/L and a median of 59.6 Bq/L. The median concentration of radon in groundwater was highest in biotite granite, alluvium, and granitic gneiss, in that order. As a result of the correlation analysis of groundwater in the study area, there was no significant correlation between uranium and radon. Conclusions: In this study area, uranium was shown to be far below the concentrations allowed by drinking water quality standards, but radon concentrations exceeded drinking water quality monitoring standards in 11% of the samples. It was judged that appropriate measures, such as the installation of radon reduction facilities, will be required after a thorough review of high-concentration radon detection sites of in the research area.

Keywords

Acknowledgement

본 연구는 2021년도 환경부 "환경분야 시험검사의 국제적 적합성 기반구축" 사업과 광주광역시보건환경연구원 ""연구지원 및 역량강화" 사업 지원으로 수행되었습니다.

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