Distribution and mobility of metals in agricultural soils near a copper smelter in South China

doi:10.1007/s10653-005-9007-z

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	Distribution and mobility of metals in agricultural soils near a copper smelter in South China
	Hu, NJ ; Li, ZQ ; Huang, P ; Tao, C
刊名	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
	2006-02-01
卷号	28 期号:1-2 页码:19-26
关键词	Geoaccumulation Index Heavy Metals Mobility Speciation
ISSN号	0269-4042
DOI	10.1007/s10653-005-9007-z
文献子类	Article
英文摘要	The distribution and mobility of heavy metals in the paddy soils surrounding a copper smelting plant in south China was investigated. We assessed the degree of metal contamination using an index of geoaccumulation. The metals were divided into two groups: (1) Cu, Zn, Pb and Cd, whose concentrations were heavily affected by anthropogenic inputs, and (2) Ni, Co and Cr, which were mainly of geochemical origin. Concentrations of Cu, Cd, Zn, and Pb in the polluted soils were higher than the Chinese soil quality criteria. The chemical partitioning patterns of Pb, Zn and Cu indicated that Pb was largely associated with the residual and NH2OH HCl extractable fractions. In contrast, Cd was predominantly associated with the MgCl2 extractable fraction. A large proportion of Cu was bound to the acidic H2O2 extractable fractions, while Zn was predominantly found in the residual phase. The fraction of mobile species, which potentially is the most harmful to the environment, was found to be elevated compared to unpolluted soils in which heavy metals are more strongly bound to the matrix. The mobility of the metals was studied by water extraction using a modification of Tessier's procedure, and the order of mobility was Zn > Cd > Cu > Ce > Pb.; The distribution and mobility of heavy metals in the paddy soils surrounding a copper smelting plant in south China was investigated. We assessed the degree of metal contamination using an index of geoaccumulation. The metals were divided into two groups: (1) Cu, Zn, Pb and Cd, whose concentrations were heavily affected by anthropogenic inputs, and (2) Ni, Co and Cr, which were mainly of geochemical origin. Concentrations of Cu, Cd, Zn, and Pb in the polluted soils were higher than the Chinese soil quality criteria. The chemical partitioning patterns of Pb, Zn and Cu indicated that Pb was largely associated with the residual and NH2OH HCl extractable fractions. In contrast, Cd was predominantly associated with the MgCl2 extractable fraction. A large proportion of Cu was bound to the acidic H2O2 extractable fractions, while Zn was predominantly found in the residual phase. The fraction of mobile species, which potentially is the most harmful to the environment, was found to be elevated compared to unpolluted soils in which heavy metals are more strongly bound to the matrix. The mobility of the metals was studied by water extraction using a modification of Tessier's procedure, and the order of mobility was Zn > Cd > Cu > Ce > Pb.
学科主题	Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
URL标识	查看原文
语种	英语
WOS记录号	WOS:000237333800004
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5121]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Soil & Environm Bioremediat Res Ctr, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chengdu Univ Technol, Chengdu 610059, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Hu, NJ,Li, ZQ,Huang, P,et al. Distribution and mobility of metals in agricultural soils near a copper smelter in South China[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2006,28(1-2):19-26.
APA	Hu, NJ,Li, ZQ,Huang, P,&Tao, C.(2006).Distribution and mobility of metals in agricultural soils near a copper smelter in South China.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,28(1-2),19-26.
MLA	Hu, NJ,et al."Distribution and mobility of metals in agricultural soils near a copper smelter in South China".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 28.1-2(2006):19-26.