Assessment of some heavy metals pollution in Clarias gariepinus in the vicinity of Lake Chad, Nigerian sector, using energy dispersive X-ray fluorescence (EDXRF)
2012
Jonathan, B.Y. | Maina, H.M.
Globally, aquatic ecosystems are highly polluted with heavy metals from anthropogenic and terrigenous sources. The objectives of this study, is to portray the use of EDXRF for the analysis of heavy metal pollution in Clarias gariepinus. C. gariepinus were collected from Dumba, Lake Chad, Nigerian sector and analyzed with EDXRF with <sup>109</sup>Cd as excitation source of the samples. The concentrations of Cadmium, Chromium, Copper, Manganese, Iron, Lead and Zinc (Cd, Cr, Cu, Mn, Fe, Pb and Zn) in mg/kg were determined in C. gariepinus and were compared with World Health Organization (WHO, 1985) and Federal Environmental Protection Agency (FEPA, 2003) to ascertain the level of Cd, Cr, Cu, Mn, Fe, Pb and Zn in C. gariepinus from Dumba. The results indicated that C. gariepinus is polluted with Cr, Cu, Mn, and Pb when compared with permissible limit of WHO, 1985 and FEPA, 2003. Therefore, the consumption of C. gariepinus from Dumba may pose a health risk.
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