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2011 (Vol. 3, Issue: 5)
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. 

Key words:  Chemical extraction, flame absorption spectrometry, heavy metals, kaduna metropolis, maize grown soils, ,
Vol. 3 , (5): 397-400
Submitted Accepted Published
2011 June, 27 2011 August, 16 2011 September, 10
Abstract:

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.
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  Cite this Reference:
S.S. Mohammed and J.T. Ayodele, 2011. 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, 3(5): 397-400.
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ISSN (Online):  2041-3890
ISSN (Print):   2041-3882
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