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Madu FU
Chinyere GC*
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International Research Journal of Biochemistry and Biotechnology

Physicochemical characteristics and heavy metal constituents of five dumpsite soils and edible vegetables grown in two major metropolis of Abia State, Nigeria

Chinyere GC* and Madu FU

Department of Biochemistry, Abia State University, Uturu, Abia State, Nigeria.

Accepted 27 August, 2015.

Citation: Chinyere GC, Madu FU (2015). Physicochemical characteristics and heavy metal constituents of five dumpsite soils and edible vegetables grown in two major metropolis of Abia State, Nigeria. International Research Journal of Biochemistry and Biotechnology, 2(2): 014-027.

Copyright: © 2015 Chinyere and Madu. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

The levels of heavy metals in soils of five dumpsites located in Aba and Umuahia metropolis, Abia State Nigeria, were analysed. Also these heavy metals were analysed in Solanum hycopersicum, Talissium triangulae, Amaranthus spinosus, Solanum macrocarpon and ad Curcurbita pepo grown on these dumpsites. The heavy metal concentrations (mg/kg) obtained from the soils of the studied dumpsites were significantly higher (P<0.05) than those of control soil samples. The ranges obtained for these dumpsite soils heavy metals were copper 0.59±0.04 – 4.19±0.02, zinc 3.81±0.07 – 6.68±0.01, manganese 1.36±0.03-2.91±0.02, cadmium 0.52±0.04 – 3.27±0.05, lead 1.05±0.04 – 3.57±0.02, iron 4.78±0.09 – 17.22±0.08, chromium 1.25±0.02 – 3.23±0.05, cobalt 0.52±0.04 – 1.36±0.03, mickel 0.78±0.03 – 2.09±0.07; and mercury 2.04±0.02 – 4.30±0.07. Although all the analysed heavy metals were present in sampled vegetables, only cadmium (1.42±0.08mg/kg) and lead (2.11±0.15mg/kg) in Amaranthus spinosus from Osisioma dumpsite, Aba were above FAO/WHO guidelines for metals in foods and vegetables grown on these dumpsites may pose a health hazard to consumers.

Keywords:Heavy metals, dumpsites, metropolis, soils, vegetables