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Zn > Pb > Co > Cu > Cr > Mn > Ni > Cd. The concentrations of the studied heavy metals in fish tissues were lower than the Effect Range-Low (ERL) for such fish, while gill and liver exhibited elevation over the ERL for Cd only. The metal pollution index (MPI) for most studied fish fluctuated between 0.90 and 4.42 with average 2.18 for wet weight. The ingestion of heavy metals and the calculated lifetime daily intake have been reported and do not represent any actual risk due to the low concentrations of heavy metals in the studied fish tissues. These results suggest that the studied imported frozen fish might be considered as unpolluted with heavy metal.]]>
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Zn > Mn >Cd>Cu>Hg. The concentrations of Cu and Zn were lower than the Effect Range-Low (ERL) for all studied fish, while the other metals (Fe, Mn, Cd and Hg) were ranging from over the ERL and under the Effect Range-Median (ERM). These results suggest that the fish collected from open sea and Lake Edku might be considered relatively unpolluted 'with heavy metals. The metal pollution index (MPI) for most studied fish fluctuated between the calculated MPI for ERL and ERM. However, MPI recorded for summer showed the highest value over other seasons in the studied fish samples.]]>
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