论文部分内容阅读
This study investigates the soils and wild plants from a polluted area around non-ferrous metal smelting zone.Representative sampling sites is identified according to the land-use type such as living zone,public zone,farmland zone and factory zone.Eight kinds of heavy metals(Cr,Mn,Ni,Cu,Zn,Cd,Sb and Pb)concentrations were analyzed by inductively coupled plasma mass spectrometry(ICP-MS)in soils and plants.The levels of soil pollution were assessed using Newmerows synthetical contamination index method.Bioaccumulation coefficients(BAC)in local plants were calculated.The Newmerows synthetical contamination index was in the range of 16.81 to 198.11.This result indicated a heavy burden of Cu,Zn,Cd,Sb and Pb on local environment,which was attributed to the dispersion of metals due to smelting.HM concentrations in plants were directly related with soil contents.The ability to uptake of heavy metals of arbor is stronger than herbal plants.The BAC of Cr,Mn,Zn,Cd,Zn in Leuce(leaf),Zn,Cd in Chenopodium and Cu,Zn,Cd,Sb,Pb in Kochia scoparia is relatively large.This will provide reference for the selection of hyperaccumulator,and provide basic theory for the application of hyperaccumulator to treat heavy metal polluted soil.