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18.97.14.83
18.97.14.83
충남 금산 폐탄광지역의 토양 , 하상퇴적물 및 토양수의 이화학적 특성
Physio - Chemical Characteristics of Soil , Stream Sediment and Soil Water Contaminated by the Abandoned Coal Mine in Keumsan , Chungnam
민일식 , 김명희 , 송석환 ( Ell Sik Min , Myung Hee Kim , Suck Hwan Song )
UCI I410-ECN-0102-2008-520-001456525

The research has been made for the effects of the pollution by the abandoned coal mine drainage on the physical and chemical properties of soil, stream sediment and soil water. The soils overspreaded by the abandoned coal don`t develop solum and the bulk density is 1.838/㎥, compared with 1.191.38g/㎥ in the other forest soils. The soil pH range in coal bearing region ie, from 4.01 to 4.11 and non-coal bearing soil range is from 5.03 to 5.13. Heavy metals such as As, Cr, Ni, Mo and Ba of coal bearing soils and polluted stream sediments have larger concentration than those of non-coal content and non-polluted. F_specially As and Mo concentrations are largely high in coal bearing. The relative ratios K₂O/Na₂O of geochemical elements are higher in coal bearing soil and polluted stream sediments than those of non-coal bearing soils and non-polluted stream sediments as well as black shales of the Changri Formation. However, MgO+Fe₂O₃+TiO₂/CaO+K₂O are the opposite trends, so that the ratios are lower in the polluted regions. The soil water pHs in the polluted regions are the strong acid(pH3.4-4.2) and buffer capacity of the polluted soil is low because canons such as Na^+, K^+, Mg^(+2) are leached by the acidification.

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