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

Environmental Geochemistry and Health
Ningjing HuCheng Tao

Abstract

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 NH(2)OH HCl extractable fractions. In contrast, Cd was predominantly associated with the MgCl(2) extractable fraction. A large proportion of Cu was bound to the acidic H(2)O(2) 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 > Pb.

References

Jul 20, 2002·Environmental Pollution·S C WongY S Min

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Citations

Nov 12, 2010·Bulletin of Environmental Contamination and Toxicology·F RastmaneshB Keshavarzi
May 31, 2014·Environment International·Yanguo TengLiuting Song
Oct 21, 2016·Environmental Science and Pollution Research International·Hu NingjingShi Xuefa
Jan 11, 2018·International Journal of Environmental Research and Public Health·Zheng Sun, Jiajun Chen
Jan 24, 2019·Environmental Geochemistry and Health·In-Gyu ChoSung-Deuk Choi
Feb 9, 2020·International Journal of Environmental Research and Public Health·Cleomar ReginattoAntonio Thomé
Jan 10, 2020·Environmental Science and Pollution Research International·Cleomar ReginattoKrishna R Reddy
May 31, 2019·PloS One·Katarzyna Wiatrowska, Jolanta Komisarek
Mar 4, 2017·Environmental Science and Pollution Research International·Milad Mirzaei AminiyanAmin Heydariyan
Nov 17, 2017·Environmental Science and Pollution Research International·Zhuo ZhangHonghan Chen
Nov 15, 2020·Environmental Science and Pollution Research International·Anita Punia
Mar 24, 2021·Environmental Research·Grzegorz IzydorczykKatarzyna Chojnacka

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