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Type: Journal article
Title: Geochemical indices allow estimation of heavy metal background concentration in soils
Author: Hamon, R.
McLaughlin, M.
Gilkes, R.
Rate, A.
Zarcinas, B.
Robertson, A.
Cozens, G.
Radford, N.
Bettenay, L.
Citation: Global Biogeochemical Cycles, 2004; 18(GB1014):1-6
Publisher: Amer Geophysical Union
Issue Date: 2004
ISSN: 0886-6236
Statement of
R. E. Hamon, M. J. McLaughlin, R. J. Gilkes, A. W. Rate, B. Zarcinas, A. Robertson, G. Cozens, N. Radford and L. Bettenay
Abstract: Defining background concentrations for heavy metals in soils is essential for recognizing and managing soil pollution. However, background concentrations of metals in soils can vary naturally by several orders of magnitude. Moreover, many soils have also been subject to unquantifiable anthropogenic inputs of metals, in some cases, for centuries. Hence determination of heavy metal background concentrations in soils has to date been fraught with difficulty. Here we demonstrate that there are associations between the background heavy metal and Fe or Mn contents in soils which appear to be consistent for seven important heavy metals of environmental concern. The relationships are remarkably independent of both soil type and climatic setting. These observations provide the basis for a series of general equations from which it is proposed Southeast Asian including Australian, and possibly worldwide background concentrations for As, Cr, Co, Cu, Ni, Pb, and Zn in soils can be derived.
Keywords: baseline; heavy metal contaminant; risk assessment; soil pollution
Rights: Copyright © 2004 American Geophysical Union
RMID: 0020042198
DOI: 10.1029/2003GB002063
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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