Risk Assessment for Heavy Metals in Soil, Ground Water, Rice Grain nearby Abandoned Mine Areas

국내 폐금속 광산지역에서의 토양, 지하수, 쌀의 중금속 노출에 따른 인체 위해성평가

  • Na, Eun-Shik (Department of Bio Environmental Chemistry, Chungnam National University) ;
  • Lee, Yong-Jae (Department of Bio Environmental Chemistry, Chungnam National University) ;
  • Ko, Kwang-Yong (Department of Bio Environmental Chemistry, Chungnam National University) ;
  • Chung, Doug-Young (Department of Bio Environmental Chemistry, Chungnam National University) ;
  • Lee, Kyu-Seung (Department of Bio Environmental Chemistry, Chungnam National University)
  • 나은식 (충남대학교 생물환경화학과) ;
  • 이용재 (충남대학교 생물환경화학과) ;
  • 고광용 (충남대학교 생물환경화학과) ;
  • 정덕영 (충남대학교 생물환경화학과) ;
  • 이규승 (충남대학교 생물환경화학과)
  • Received : 2013.03.12
  • Accepted : 2013.07.01
  • Published : 2013.12.31


BACKGROUND: The objectives of this study are to investigate the contamination levels of heavy metals in soil, ground water, and agricultural product near the abandoned Boeun and Sanggok mine areas in Korea and to assess the health risk for these local residents exposed to the toxic heavy metals based on analytical data. METHODS AND RESULTS: By the results of human health risk assessment for local residents around Boeun and Sanggok, human exposure to cadmium, copper, arsenic from soil and to lead, cadmium, and arsenic from rice grain were higher in Sanggok, but human exposure to zinc and arsenic from ground water was higher in Boeun. By the results of hazard index (HI) evaluation for arsenic, cadmium, copper, lead, and zinc, HI values in both areas were higher than 1.0. This result indicated that the toxicity hazard through the continuous exposure to lead, cadmium, arsenic from rice, ground water, and soil would be likely to occur to the residents in the areas. Cancer risk assessment for arsenic, risks from the rice were exposed to one to two out of 10,000 people in Boeun and one of 1,000 people in Sanggok. These results showed that the cancer risks of arsenic in both areas were 10~100 times greater than the acceptable cancer risk range of US EPA ($1{\times}10^{-6}{\sim}1{\times}10^{-5}$). CONCLUSION(S): Therefore, if these two local residents consume continuously with arsenic contaminated soil, ground water, and rice, the adverse health effects (carcinogenic potential) would be more increased.


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