Analysis and assessment of soil heavy metals around a petrochemical industry park
石化园区周边农田土壤重金属污染分析与评价

A total of 200 topsoil samples were collected by a GPS-based radial design over an area of 300 km2 in the vicinity of a chemical industrial park. According to the Standard of Soil Environment Quality (GB15618-1995) and the background values of the soil environment in this region,heavy metal pollution by Cd,Cr,Cu,Ni,Pb,Zn,Hg and As in the soils sampled was analyzed. Results of statistical analysis indicated that the mean concentrations of heavy metals Cd,Hg,Cu and Pb exceeded their natural background values....