Estimates of ambient background concentrations of trace metals in soils for risk assessment

A - Papers appearing in refereed journals

Zhao, F-J., McGrath, S. P. and Merrington, G. 2007. Estimates of ambient background concentrations of trace metals in soils for risk assessment. Environmental Pollution. 148 (1), pp. 221-229.

AuthorsZhao, F-J., McGrath, S. P. and Merrington, G.
Abstract

Site-specific or soil type-specific ambient background concentrations (ABCs) of trace metals in soils are needed for risk assessment. We investigated three different methods for estimating ABCs in soils using a dataset of 5691 soil samples from England and Wales. The concentrations of Co, Cr and Ni were strongly associated with Al and Fe, and multiple regressions explained 62–85% of their variation, and Al and Fe can therefore be used to predict ABCs for these metals. Soil texture had a major influence on the concentrations of Cd, Co, Cr, Cu, Ni and Zn, and the medians were 3–5 fold higher in clayey than in sandy soils. This was used to predict texture-specific ABCs. Lead concentration was higher in acidic peaty soils than in other soils. A probability graph method was used to estimate ABC for Pb in a population of relatively uncontaminated soils. Potential applications of ABCs are discussed.

Year of Publication2007
JournalEnvironmental Pollution
Journal citation148 (1), pp. 221-229
Digital Object Identifier (DOI)doi:10.1016/j.envpol.2006.10.041
Open accessPublished as non-open access
Funder project or codeSEF
Soil protection and remediation by chemical and biological approaches
Site-specific background concentrations for soils to be used for soil screening levels
Publisher's version
Copyright license
Publisher copyright
Output statusPublished
Publication dates
Online16 Jan 2007
Publication process dates
Accepted19 Oct 2006
PublisherElsevier Sci Ltd
ISSN0269-7491

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