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KMID : 1024519990080020197
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Journal of the Environmental Sciences
1999 Volume.8 No. 2 p.197 ~ p.204
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Heavy Metal Concentrations in Soils and Stream around the Abandoned Mine Land
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Jun Kwan-Soo
Lee Chul-Hee
Won Yang-Soo
Jeung Jin-Wook
Park Byeong-Sam
Shin Duck-Gu
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Abstract
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The extent of heavy metal pollution in agricultural in soils near the abandoned mine land site was investigated using their concentrations from the 47 sampling sites in B mine. Samples were prepared using 0.1N HCI - Korean Standard Methods - and then analysed for Cd, Cu, Pb, As and Cr by Inductively Coupled Plasma Spectrometer. In addition, soil and mine tailing samples were sequentially extracted to investigate the chemical speciation of heavy metals in them. The soils in the vicinity of mining area are highly contaminated by heavy metals ranging up to 5.96mg Cd/kg, 253.3mg Cu/kg, 76.7mg Pb/kg, and 15.45 mg As/kg, according to the analysis of Korean Standard Methods. The heavy metal levels by the sequential extraction are much higher than its level by Korean Standard Methods, and little correlated with each other. Based on the results, it is suggested that the As pollution in agricultural soils near the AMLS should be dealt as of prior significance in establishing reclamation strategies for the area.
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KEYWORD
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Heavy metal, Abandoned mine, Contaminated soil, Tailings, Sequential extraction
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