Heavy Metal Pollution and Assessment of Soil Environmental Quality in Different Functional Areas in Wuhu City

On the basis of the data on Cd,Hg,Cu,Pb,Cr,Zn heavy metal contents of soils sampled from the industrial zone,commercial area,recreational area and residential area in Wuhu city,Anhui province,the status of soil pollution by heavy metals was studied by use of background contents of these elements under the natural soil condition and the national quality standard of soil environment.Meanwhile,principal component analysis was applied to a comprehensive evaluation of the quality of soil environment.The study indicates that on the whole the most of heavy metal existing in the sample soils quite resulted in pollution.Cd,Hg,Cu in industrial soil,Cd,Hg in the business district soil,and Cd in the recreation area and residential soil are almost in excess of the national standards of soil environmental quality.In general,the pollution is more serious in industrial than the other regions.