期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2013
卷号：3
期号：1
页码：65-76
语种：English
出版社：Sciencedomain International
摘要：Sediment samples taken from eight locations within the Owena Multi-purpose Dam in six sampling campaigns, covering the wet and dry seasons were analyzed for Pb, Cd, Cu, Cr, Ni, Fe, Mn and Zn using the atomic absorption spectroscopic method. Samples of three fish species: Clarias gariepinus, Clarias anguillaris and Oreochromis niloticus collected from the dam were also analysed for the above metals concentration. Results of heavy metals determination revealed significant seasonal variation (P = .05) in most measured parameters, while spatial variation was not significant. Generally, the results indicate that the measured parameters of the dam sediment were far lower than the Probable Effect Concentrations (PEC). Also, all metals monitored were detected in all the fish samples except cadmium that was not detected in the trunk of Oreochromis niloticus. They, however, showed values that were within the acceptable International Standards in fish for human consumption and so, could not presently cause any health hazard. The present study has produced vital information about the current status of the dam, which would also serve as a baseline for future monitoring of the dam.
关键词：Sediment;heavy metals;Owena multi-purpose dam;fish;coefficient of variation
