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정구복 ( Goo Bok Jung ),김원일 ( Won Il Kim ),이종식 ( Jong Sik Lee ),신중두 ( Joung Du Shin ),김진호 ( Jin Ho Kim ),이정택 ( Jeong Taek Lee ) 한국환경농학회 2006 한국환경농학회지 Vol.25 No.4
This experiment was conducted to investigate heavy metal transition and bioavailability from soil to the edible parts of water dropwort near industrial complex. The soils were collected from the paddies cultivating water dropwort, stream sediments, and background soils near industrial complex. The pH values, organic matter, Av. P2O5, Ex. Ca contents of paddy soils were higher than those measured for non-contaminated paddy fields in 2003. The contents of Cd and Cu was higher than those of standard level for soil contamination by Soil Environmental Conservation Act in Korea. The pollution index in stream sediments were higher than those of paddies cultivating water dropwort. The geoaccumulation index of heavy metals in paddy soils and stream sediments were in the order Cu>Cd>Ni>Zn>Pb. The rates of 0.1N-HCl extractable heavy metals to total contents in soils were in the order Cd>Cu>Zn>Ni>Pb. In case of Cd and Ni in paddy soils near industrial complex, 0.1N-HCl extractable heavy metals and total content were highly correlated with each other. Heavy metal contents in root parts were higher than those in top parts of water dropwort. The Zn and Cu transfer factor from soil to the top parts of water dropwort were higher than those of other heavy metals. The bioavailability of water dropwort varied considerably between the different parts and heavy metals. Cd, Cu and Ni contents in water dropwort were correlated with each elements in paddy soils.