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Ongeri, D.M.K.* ; Lalah, J.O.* ; Wandiga, S.O.* ; Schramm, K.-W. ; Michalke, B.

Seasonal variability in cadmium, lead, copper, zinc and iron concentrations in the three major fish species, Oreochromis niloticus, Lates niloticus and Rastrineobola argentea in Winam Gulf, Lake Victoria: Impact of wash-off into the lake.

Bull. Environ. Contam. Toxicol. 88, 166-171 (2012)
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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Trace metals Cadmium (Cd), Lead (Pb), Copper (Cu), Zinc (Zn) and Iron (Fe) were analyzed in edible portions of three main finfish species namely Lates niloticus, Oreochromis niloticus and Rastrineobola argentea sampled from various beaches of Winam Gulf, Lake Victoria, Kenya, in order to determine any seasonal and site variations and the results showed significantly (p < 0.05) higher mean concentrations of Cd, Cu, Zn and Fe during the wet season compared to the dry season for all the three species indicating the impact of wash-off into the lake during the rainy periods. The overall mean concentrations of the heavy metals (in μg/g dry weight) in all combined samples ranged from 0.17-0.40 (Cd), 0.47-2.53 (Pb), 2.13-8.74 (Cu), 28.9-409.3 (Zn) and 31.4-208.1 (Fe), respectively. It was found that consumption of Rastrineobola argentea can be a significant source of heavy metals especially Zn, to humans, compared with Lates niloticus and Oreochromis niloticus, if only the muscle parts of the latter two are consumed.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Fish; Human-consumption; Heavy-metals; Lake Victoria
ISSN (print) / ISBN 0007-4861
e-ISSN 1432-0800
Quellenangaben Band: 88, Heft: 2, Seiten: 166-171 Artikelnummer: , Supplement: ,
Verlag Springer
Begutachtungsstatus Peer reviewed