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Contamination Level and Behavior of Heavy Metals in Stream Sediments Within the Watershed of Juam Reservoir  

염승준 (한국지질자원연구원 지질환경재해연구부)
이평구 (한국지질자원연구원 지질환경재해연구부)
강민주 (한국지질자원연구원 지질환경재해연구부)
신성천 (한국지질자원연구원 지질환경재해연구부)
유연희 (전북대학교 지구환경과학과)
Publication Information
Economic and Environmental Geology / v.37, no.3, 2004 , pp. 311-324 More about this Journal
Abstract
We investigated the contamination and behavior of heavy metals in stream sediments within the watershed of Juam Reservoir. Many abandoned mines within the reservoir can act as a potential contaminant source for water quality. Heavy metal concentrations (Cr, Cu, Ni, Pb and Zn) in stream sediments from watershed are very low, indicating that content of heavy metals in the sediments probably do not affect the water quality in Juam Reservoir. However Pb concentration in the stream sediments increases downward streams, suggesting the possible diffusion of Pb contamination. According to the leaching ratio for stream sediments at a strong acidic condition in the abandoned mine areas, the relative mobility for metals decreases in the order of Pb>Zn=Cu>Ni>Cr, indicating that Pb can have a bad effect upon the water quality in Jum Reservoir. Moreover, if contaminated sediment is placed in the bottom of reservoir (i.e., reducing condition), the relative mobility of Pb is the highest, indicating that Pb in the bottom sediments can be leached to water at interface between water and sediment with changing in physicochemical conditions.
Keywords
Juam Reservoir; stream sediments; heavy metal contamination; chemical speciation; mobility;
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Times Cited By KSCI : 1  (Citation Analysis)
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