Metal contamination and solid phase partitioning of metals in the stream and bottom sediments in a reservoir receiving mine drainage |
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| Institution: | 1. Department of Geology, Palacký University of Olomouc, T?. 17 listopadu 12, 77146 Olomouc, Czech Republic;2. Department of Geological Sciences, Masaryk University, Kotlá?ská 2, 61137 Brno, Czech Republic;3. Institute of Inorganic Chemistry AS CR, v.v.i., Husinec-?e? 1001, 250 68, ?e?, Czech Republic;1. Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States;2. Department of Geography, University of California Santa Barbara, CA 93106, United States;3. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States;4. Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, WI 53706, United States;5. Dept. of Land, Air and Water Resources, University of California Davis, CA 95616, United States;1. Department of Preventive Medicine, Wonju College of Medicine, Yonsei University, Wonju 220-710, South Korea;2. Institute of Genomic Cohort, Wonju College of Medicine, Yonsei University, Wonju 220-710, South Korea;3. Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul 133-791, South Korea;4. Division of Earth and Environmental Science, Korea Basic Science Institute, Ochang 363-883, South Korea |
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| Abstract: | This study was conducted to assess the anthropogenic impact on metal concentrations in the bottom sediments of the Juam reservoir, Korea, and in stream sediments in its catchment, and to estimate the potential mobility of selected metals (Fe, Mn, Cu, Ni, Pb and Zn) using sequential extraction. A comparison of the metal concentrations in the stream sediments with mean background values in sediments collected from first- or second-order creeks shows that Pb, Cu and Ni are the most affected by anthropogenic inputs. The 206Pb/207Pb ratios of the bottom and core sediments (means: 1.2320 ± 0.0502 and 1.2212 ± 0.0040, respectively) suggest that Pb contamination is mainly due to the waste discharge of abandoned coal and metal mines rather than industrial and airborne sources. Considering the proportion of metals bound to the exchangeable, carbonate and reducible fractions, the comparative mobility of metals is suggested to decrease in the order Mn > Pb > Zn > Ni > Fe ? Cu. |
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