Speciation of Cd, Cu, Zn, Fe and Pb in sediments sampled from Lake Victoria basin, Kenya

D. M. K. Ongeri (), J. O. Lalah and S. O. Wandiga
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D. M. K. Ongeri: Maseno University
J. O. Lalah: Maseno University
S. O. Wandiga: University of Nairobi

Environment Systems and Decisions, 2010, vol. 30, issue 3, 254-259

Abstract: Abstract Speciation studies revealed that the heavy metals in sediments of Lake Victoria Basin, Kenya, are highly bioavailable with % average values of 73.3, 66.9, 65.6, 57.1 and 55.8 for Zn, Pb, Fe, Cu and Cd respectively being recorded. The high percentages were attributed to the anthropogenic sources of these metals upstream and within the shores of Lake Victoria. Large loads of floating organic matter were witnessed on the surface of water, and this most likely contributed to the high % of organic matter of 7.58 recorded in this study. High % of organic matter in sediments contributes significantly to bioavailability of heavy metals in sediments.

Keywords: Heavy metals; Sediments; Bioavailable; Residual; Speciation; Lake Victoria basin; Kenya (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1007/s10669-010-9269-6

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