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Abstract
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Article Information:
Speciation of Nickel in Soils and Cereal
J.T. Ayodele and S.S. Mohammed
Corresponding Author: S.S. Mohammed
Submitted: 2011 January, 16
Accepted: 2011 February, 15
Published: 2011 March, 30 |
Abstract:
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The levels of trace elements in food and agricultural samples have been shown to influence human
and plant metabolism. The study of heavy metal speciation is of interest for the evaluation of their mobility,
bioavailability and ecotoxicity. In this study, the Nickel concentrations of the cereal and soil samples were
determined using Flame Atomic Absorption Spectrometry (FAAS). The soil samples related to the cereal were
digested and extracted using different digestion and extraction reagents. The results indicate that the soil
samples collected from various locations, contain varying amounts of the metals, and it was distributed between
Residual, Oxide and Carbonate fractions. The results of the study also showed that the lowest value of total Ni
concentration in soil was in sampling point KC4 (2.93 mg/kg) and the highest value was in points ST6 and ST7
(105.37 mg/kg). In some of the sample locations, the Ni concentration was above the tolerable limit value of
50 mg/kg. The relationship between the cereal Ni and soil-extractable Ni concentrations was significant
(p<0.05).
Key words: Cereal, flame atomic absorption spectrometry, Nickel, soil, speciation, ,
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Abstract
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Cite this Reference:
J.T. Ayodele and S.S. Mohammed, . Speciation of Nickel in Soils and Cereal. Research Journal of Applied Sciences, Engineering and Technology, (03): 202-209.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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