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Abstract
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Article Information:
Comparison of Extraction Techniques for the Determination of Ni, Cu, Zn and Pb in Maize grown soils of Kaduna Metropolis, Nigeria
S.S. Mohammed and J.T. Ayodele
Corresponding Author: Mohammed S.S.
Submitted: 2011 June, 27
Accepted: 2011 August, 16
Published: 2011 September, 10 |
Abstract:
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To assess the availability of metals in soil for absorption, the chemical forms must be determined.
Sequential extraction procedures are useful to determine the geochemical partitioning of heavy metals in the
soil. In this study, the Ni, Cu, Zn and Pb concentrations of soil samples from maize grown soils in Kaduna
metropolis were determined using Flame Atomic Absorption Spectrometry (FAAS). Hot and cold extraction
techniques were employed for the digestion and extraction of the soil samples using 0.05 mol/L EDTA, 1.0
mol/L oxalic acid and 1.0 mol/L acetic acid. The results indicated that there is no significant difference between
hot and cold techniques for these metals in the reagents except for Zn in 0.05 mol/L EDTA and 1.0 mol/L oxalic
acid where there is significant difference between hot and cold extraction and that the hot extraction is superior
to the cold extraction with mean values of 25.63 for 0.05 mol/L EDTA and 26.37 for 1.0 mol/L oxalic acid.
Key words: Chemical extraction, flame absorption spectrometry, heavy metals, kaduna metropolis, maize grown soils, ,
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Abstract
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Cite this Reference:
S.S. Mohammed and J.T. Ayodele, . Comparison of Extraction Techniques for the Determination of Ni, Cu, Zn and Pb in Maize grown soils of Kaduna Metropolis, Nigeria. Asian Journal of Agricultural Sciences, (5): 397-400.
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ISSN (Online): 2041-3890
ISSN (Print): 2041-3882 |
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