Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/98055
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Type: Journal article
Title: Contamination and vertical distribution of As, Cd, Cr, Cu, Pb, Tl, and Zn in paddy soil irrigated with untreated leachate from tailings retention ponds
Author: Wu, Q.
Leung, J.
Pérez, A.
Huang, X.
Wang, W.
Citation: Toxicological and Environmental Chemistry, 2015; 97(6):710-722
Publisher: Taylor and Francis
Issue Date: 2015
ISSN: 0277-2248
1029-0486
Statement of
Responsibility: 
Qihang Wu, Jonathan Y.S. Leung, Alejandro Lafuente Pérez, Xuexia Huang, and Weitong Wang
Abstract: The contamination and vertical distribution of As, Cd, Cr, Cu, Pb, Tl, and Zn in paddy soil irrigated with untreated leachate from the tailings retention pond were investigated. As, Cr, Cu, and Zn were slightly contaminated in the surface soil and hence their vertical distribution was not obvious. However, Cd and Pb were highly contaminated in the surface soil, while their concentrations decreased with depth, being negatively correlated with pH and positively with total organic matter. Tl was considerably contaminated in the surface soil and a V-shaped vertical distribution was observed where the concentration increased to a maximum at about 30 cm depth and decreased thereafter. The findings revealed that the regular irrigation with untreated leachate from the tailings retention ponds could cause considerable contamination of Cd, Pb, and Tl, and thus tailings should be stringently treated before disposal to minimize their potential environmental impacts on the surroundings.
Keywords: Contamination; paddy field; tailings; trace elements; vertical distribution
Rights: © 2015 Taylor & Francis
RMID: 0030036438
DOI: 10.1080/02772248.2015.1062484
Appears in Collections:Ecology, Evolution and Landscape Science publications

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