Distribution of Cd, Pb, Zn and Cu and their fractions in soils from a peri-smelter area in northeast China
An exploratory study on contamination of heavy metals was carried out surrounding Huludao zinc smelter in Liaoning province, China. The distribution of heavy metals and their speciations were investigated. The correlations of heavy metals with different soil pH values in corresponding sites were also analyzed. In general, Cd, Zn, Pb, Cu and As presented an elevated trend in the area near the smelter. Cd and Zn concentrations exceeded Class 3 and Class 2 (Chinese soil quality standard), respectively, within a range of 6km around the smelter, while Pb and Cu exceeded Class 1. The speciation analysis showed that the dominant fractions of Cd and Zn were bound to the acid soluble phase, while the second was the residual. Pb was mostly associated with the residual fraction with more than 50％ of total concentration. Cu in residual phase accounts for a high percentage (40％-80％) of total. Pb and Zn content in acid solution fraction increase with an increasing soil pH, while Cd content in this fraction accounted for more proportion in neutral and alkaline groups than in acidic soil group.
heavy metals Huludao Cd Cu Pb Zn zinc smelter
Ping Du Nandong Xue Fasheng Li
Department of Soil Pollution Control, Chinese Research Academy of Environmental Sciences No. 8 DaYangFang, AnWai, Beijing 100012
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
60-61
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）