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Concentrations and pattern of Fe, Cu, Cr, and Zn contamination in the soils of Akure, Nigeria

An assessment was made on twenty-eight topsoils collected from seven sites with intense artisan activities in the city of Akure, Nigeria, using geochemical approach in order to establish anthropogenic influence on metal contamination and to assess the severity of the contamination in the urban envir...

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Published in:The Environmentalist 2011-09, Vol.31 (3), p.237-245
Main Authors: Olorundare, O. F., Ayenimo, J. G., Ipinmoroti, K. O., Popoola, A. V.
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description An assessment was made on twenty-eight topsoils collected from seven sites with intense artisan activities in the city of Akure, Nigeria, using geochemical approach in order to establish anthropogenic influence on metal contamination and to assess the severity of the contamination in the urban environment. Concentrations of Fe, Cu, Zn, and Cr were determined in the samples by atomic absorption spectrophotometry. The results revealed between 137- and 165-fold elevation of Fe, between 17- and 94-fold elevation of Cu, between 50- and 137-fold elevation of Zn, and between 1- and 3-fold elevation of Cr in topsoil relative to background levels. This indicates that except for Cr, soil contaminations by the metals were due to anthropic sources such as mechanic and vulcanizers workshops. The current average levels of copper exceeded the target value in Nigeria and in many developed countries, while Zn and Cr are generally lower than the respective soil quality guidelines. The contamination/pollution index maps figured out mechanic workshop as the main source of diffuse contamination and also show the influence of the point sources of contamination to urban topsoils. Cu contamination found around the soils of the mechanic/battery charger workshop is potentially serious (severe pollution), and this may pose health risk to people dwelling around these sites or within the metropolis. Children could be at greater risk than adults, because of their hand-to-mouth behaviors that increase their exposure potential.
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identifier ISSN: 0251-1088
ispartof The Environmentalist, 2011-09, Vol.31 (3), p.237-245
issn 0251-1088
2194-5403
1573-2991
2194-5411
language eng
recordid cdi_proquest_miscellaneous_888110169
source Springer Nature
subjects Anthropogenic factors
Atomic absorption spectrophotometry
Batteries
Control
Copper
Developed countries
Earth and Environmental Science
Environment
Environmental Management
Environmental testing
Environmentalists
Gasoline
Health risks
Heavy metal content
Heavy metals
Metals
multidisciplinary
Pollution
Pollution index
Quality Control
Reliability
Safety and Risk
Science
Scrap
Soil contamination
Soil quality
Spectral analysis
Spectrophotometry
Studies
Systems Theory
Topsoil
Toxicity
Urban areas
Urban environments
Workshops
Zinc
title Concentrations and pattern of Fe, Cu, Cr, and Zn contamination in the soils of Akure, Nigeria
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