Study on the influence of the lime and peanut dry cake amend Pb contaminated soil with pakchoi

摘要

In order to study the soil amend agent how to suppress the function of the vegetables absorb Pb, the Pb was added in the experimental soil in pakchoi pot, The lime and peanut dry cake were added to the experimental soil as modifier, and the varying concentrate of modifiers, lead effect on pakchoi biomass and lead accumulate were discussed in this paper. Through the determination of Pb content of aboveground and underground part of pakchoi by ICP, the lime and peanut dry cake can resist lead absorption were proved, and the lime achieved better inhibitory effect of the two. By analyzed the BCF of two parts of pakchoi, two types of modifiers had proved can reduce the pakchoi BCF of Pb in the soil. The lime was more efficient than the peanut dry cake on reducing BCF of Pb.