摘要：In this paper, we have made an investigation and analysis of the concentrations of Pb and Cu in thesurface soil samples from a small arms shooting range in Guangxi Province of China by using theU.S.EPA3050B (HNO3-H2O2) method, and evaluated the pollution in the sampling area through the singlefactor index method and the composite pollution index Nemrow method. The results of our investigationand analysis showed that the soil of the small arms shooting range is heavily polluted by heavy metals,and the main pollution elements are Pb and Cu. The composite pollution index reached 59.18, and thesingle-factor pollution indexes of Pb and Cu have been the highest in the area of dropping bombs,which reached 72.90 and 10.12 respectively, indicating that the pollution has been to a serious level.The sources of heavy metal pollution comprise residual bullets and cartridge cases. We have alsodone analysis of the concurrent speciation of Pb and Cu in the soil with the sequential extractionmethod of Tessier, and discovered that the chemical speciation distribution order stands as follows:Resid–Pb > FeMnO–Pb > Org–Pb > Carb–Pb > Exch–Pb. As to the distribution characteristics of Cu, theorder can also be listed as follows: Resid–Cu > Org–Cu > FeMnO–Cu > Carb–Cu > Exch–Cu. It can beseen that heavy metal Pb do much more serious to the ecological environmental contamination risk.Once the environmental conditions change, Pb and Cu can be easily transformed into bioavailabilityspeciation. Because the pollution of heavy metal Pb and Cu in shooting range is serious, it is unfeasibleto turn the shooting range soil into agricultural soil.
