The Research Of Vertical Distribution Of Heavy Metal In Sediment And Soil Of Panji And Xieqiao Mining Areas,Huainan City

The paper selects Huainan of Panji and Xieqiao mining areas as survey region, Through the investigation and sampling to collapse pond sediment and the surrounding soil environment, test the content heavy metal of the sediment and soil, study the vertical distribution rule of heavy metals in the sediment, Analysis the heavy metal correlation of sediment and soil,comprehensivly evaluate the pollution situation of heavy metals in soil and sediment with accumulate index method, Potential ecological harm index method and Nemerow index method. The main conclusions of this paper are as follows:1.The heavy metal content of Cu,Pb,Cr,Hg in sedimentand soil of Panji and Xieqiao mining areas reaching class I of soil environmental quality(GB15618-1995), the content of Ni,Cd reaching class II of soil environmental quality, the content of Zn reaching classⅢof soil environmental quality.2.The content of heavy metals in sediment is diverse with the depth of the sediment, Main characteristics is tending to straight line shape, the single-peak shape and wavy. In sediment of Panji mining area,the vertical curve of Cu,Zn,Ni,Fe,Hg is the single-peak shape, the vertical curve of Pb,Cd,Cr is the wavy shape. In sediment of Xieiqao mining, the vertical curve of Cu,Zn,Cr is the single-peak shape, the vertical curve of Pb, Ni,Cd is the wavy shape, the vertical curve of Fe,Hg is the Straight line.3. According to the correlation analysis of heavy metal,in sediment of Panji area, the correlation of between the three Pb,Ni,Cd,Cr and Fe is1%,the correlation of Zn and Cu、Cr、Fe,Pb and Cr,Fe is5%. In soil of Panji area, the correlation of between the three Cu、Cd、Hg, Cu and Zn,Fe and Hg is1%, the correlation of Fe and Cu,Cd is5%. In sediment of Xieqiao, the correlation of between the three Cd,Fe,Hg, Zn and Cu is1%. In soil of xieqiao, the correlation of Cu and Cr,Pb is1%, the correlation of Cu and Ni,Zn and Hg,Pb and Cr is5%.4. According to the evaluation results of accumulation of index method, the pollution of the heavy metal Zn,Cd in sediment of Panji area is partial moderate-moderate, the pollution of the heavy metal Zn in sediment of Xieqiao is partial moderat-moderate, the pollution of Cd is Mild-partial moderate. According to the evaluation results of potential ecological harm index method, the pollution of the heavy metal Cd,Hg in sediment of Panji area is slight-medium-strong,others is slight. The pollution of the heavy metal Cd in sediment of Xieqiao is slight-medium-strong,others is slight.5. According to the evaluation results of potential ecological harm index method, the pollution of the heavy metal Cd in soil of Panji area is slight-medium-strong, the pollution of Hg is slight-medium,others is slight. The pollution of the heavy metal Cd in soil of Xieqiao is slight-medium-strong, others is slight. According to the evaluation results of Nemerow index method, the level I Nemerow index of heavy metal in soil of Panji and Xieqiao area is heavy-middle pollution, the level II is general clean-light pollution, the level Ⅲis clean.