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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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The Dalsung copper-tungsten mine in the Taegu area, Korea was closed in 1975 and may be the sources of the heavy metal contamination in the tributary system and soil-plant system due to the mine drainage derived from the mine wastes and tailings. To examine the degree and extent of heavy metal contamination in the vicinity of Dalsung mine area, stream water and soil samples were taken and analyzed for heavy metals by ICP-AES and AAS. Highly contaminated soils are found near the Lower Tunnel No.0 ranging up to $1760{\mu}g/g$ As, $2060{\mu}g/g$ Cu, $1120{\mu}g/g$ Pb and 346 ${\mu}g/g$ Zn. From the results of the sequential extraction methods for the metal speciation, the heavy metals in soils may be derived from soil parent materials and acid mine drainage. With the processes for the heavy metal removal, most of the heavy metal ions in the acid mine drainage are removed by being exchanged with Ca ions held by the bentonite, hydroxyapatite and calcium hydoxide.
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