Accumulation and sources of heavy metals in urban topsoils: a case study from the city of Xuzhou, China |
| |
| Authors: | Xue Song Wang Yong Qin Shu Xun Sang |
| |
| Institution: | (1) Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu, 222005, China;(2) College of Resources and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu, 221008, China |
| |
| Abstract: | The knowledge of the variability, the anthropogenic versus natural origin and corresponding environmental risk for potentially harmful elements in urban topsoils is of importance to assess human impact. The aims of the present study were: (1) to assess the distribution of heavy metals (Sn, Li, Ga, Ba, Fe, Mn, Co, Be, Ti, Al, Hg, Cr, Sb, As, Bi, Pd, Pt, Au, Ni, Cd, Zn, Cu, Pb, Se, Mo, Sc and Ag) in urban environment; (2) to discriminate natural and anthropogenic contributions; and (3) to identify possible sources of pollution. Multivariate statistic approaches (principal component analysis and cluster analysis) were adopted for data treatment, allowing the identification of three main factors controlling the heavy metal variability in Xuzhou urban topsoils. Results demonstrate that Hg, Cr, Sb, As, Bi, Pd, Pt, Au, Ni, Cd, Br, Zn, Cu, S, Pb, Se, Mo, Sc and Ag could be inferred to be tracers of anthropogenic pollution, whereas Al, Ti, Ga, Li, V, Co, Pt, Mn and Be were interpreted to be mainly inherited from parent materials. Iron, Ba, Sn, Pd and Br were interpreted to be affected by mixed sources. |
| |
| Keywords: | Heavy metals Urban topsoil pollution Multivariate statistics Xuzhou |
| 本文献已被 SpringerLink 等数据库收录！ |
|
