Source identification of eight hazardous heavy metals in agricultural soils of Huizhou, Guangdong Province, China

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• 作者：Limei Cai^a ; ^b ; ^c ; ^{paoc801217@163.com} ; ^{cailimei801156@hotmail.com} ; Zhencheng Xu^a ; ^c ; ^{xuzhencheng@scies.org} ; Mingzhong Ren^a ; Qingwei Guo^a ; Xibang Hu^a ; ^c ; Guocheng Hu^a ; Hongfu Wan^d ; Pingan Peng^c
• 关键词：Heavy metals ; Agricultural soils ; Huizhou ; Source ; Multivariate statistics
• 刊名：Ecotoxicology and Environmental Safety
• 出版年：2012
• 期刊代码：77_01476513
• 类别：env
• 出版时间：1 April, 2012
• 卷：78
• 期：Complete
• 页码：2-8
• 文件大小：319 K

摘要

One hundred and four surface samples and 40 profiles samples in agricultural soils collected from Huizhou in south-east China were monitored for total contents of 8 heavy metals, and analyzed by multivariate statistical techniques and enrichment factor (EF), in order to investigate their origins. The results indicate that the concentrations of Cu, Zn, Ni, Cr, Pb, Cd, As and Hg in soils are 16.74, 57.21, 14.89, 27.61, 44.66, 0.10, 10.19 and 0.22 mg/kg, respectively. Compared to the soil background contents in Guangdong Province, the mean concentrations of Hg, Cd, Zn, Pb and As in soil of Huizhou are higher, especially Hg and Cd, which are 2.82 and 1.79 times the background values, respectively. Cr, Ni, Cu, partially, Zn and Pb mainly originate from a natural source. Cd, As, partially, Zn mainly come from agricultural practices. However, Hg, partially, Pb originate mainly from industry and traffic sources.