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- W3176081648 abstract "Rock and soil (A horizons) in the around abandoned Kwangyang mine area were sampled for the investigation of the pollution by heavy metal. Contents of Cd, Pb, As and Cu in all sampled soils from mountain, farm field, paddy field and sludge in the vicinity of the Kwangyang mine are significantly higher than the published worldwide mean values of those in soils. The average content of As, Cd, Cu, Pb, Zn in soils collected from tailling is 848 ppm, 11.1 ppm, 1504 ppm, 551 ppm, 827 ppm, respectively, and therefore, tailling site may be the major contamination sources in this study area. The pH values of soil samples range from 4.4 to 5.7, and loss-on-ignition values are in the range from 1.2s to 2.26%. MgO, CaO and Na₂O, As, Bi, Sb and Pb were significantly differenced in the mean content between the rock and soils, because those elements are very high characteristic of solubilities and mobilities. As element was highly enriched in this study area soils in comparison with Law of Soil Environmental Conservation Value in the Korea, such as Cd and Cu in sludge soils have been Beverly contaminated comparing with those value. In the discrimination analysis, types of soils were classified in 72.72% by discriminative function in terms of major elements mainly with CaO, MgO, MnO and Al₂O₃, and in 72.73% by those in terms of trace elements with Bi, Sb, Cd, As and Tl. Through regression analysis, independent variables such as heavy elements are observed to be highly correlated with high values in partial regression coefficients, which suggest that these elements might be significantly associated in enrichment processes of heavy elements in this study area." @default.
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- W3176081648 date "1998-01-01" @default.
- W3176081648 modified "2023-09-23" @default.
- W3176081648 title "광양광산 섬록암과 주변 토양에서 중금속 원소의 지구화학적 분산에 관한 연구" @default.
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