Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
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Contamination of Stream and Reservoir Waters with Arsenic from Abandoned Gold Mine

  • Lee, Jin-Yong (Department of Geology, Kangwon National University) ;
  • Kim, Hee-Joung (Institute of Environmental Research, Kangwon National University) ;
  • Yang, Jai-E. (Department of Biological Environment, Kangwon National University)
  • Published : 2008.03.28
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Abstract

Levels of arsenic in stream and reservoir waters affected by an abandoned gold mine were examined. The abandoned mine has been left without proper civil and remedial works preventing potential environmental hazards. Field and laboratory chemical analyses revealed that the stream waters downgradient from the mine area were severely contaminated with arsenic and furthermore the reservoir water, 2-3 km away from the mine, also contained substantial levels of As, far exceeding the Korean stream water standard. Relatively higher pH values (6.5-9.4) enhanced mobility of As and mainly sustained substantial As concentration in waters. Chemistries of the stream water, groundwater and reservoir water were dominated by two main factors including effects of mine effluent and anthropogenic agricultural activities. Considering that there has been a substantial As input to the reservoir and the reservoir water has been used for agricultural and domestic uses, immediate remedial works are essentially required.

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References

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