alexa Trace metal accumulation in Clarias gariepinus (Teugels) exposed to sublethal levels of tannery effluent.


Journal of Environmental & Analytical Toxicology

Author(s): Gbem TT, Balogun JK, Lawal FA, Annune PA, Gbem TT, Balogun JK, Lawal FA, Annune PA

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Abstract The concentration and distribution of Cr, Cu, Pb and Zn among the tissues of a freshwater fish, Clarias gariepinus exposed to combined (composite) tannery effluent was investigated at two sublethal concentrations (2 and 6\%) in static bioassay for 8 weeks. The distribution of the four metals in fish was of the order of Pb > Cr > Cu > Zn and the accumulation was found to be dose- and time-dependent. The metal levels in the liver were significantly higher (P > 0.05) than other tissues. This was followed by the gill and the gut. Relatively low accumulation of these metals was found in muscle tissue.
This article was published in Sci Total Environ and referenced in Journal of Environmental & Analytical Toxicology

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