| Abstract: |
One hundred and twenty shellfish samples (30 each of crabs,shrimps, sepia and oysters) of different size and sex were collected fromDamietta city markets for estimation of their heavy metal contents.A-Metal concentrations in shellfish:Collected samples were subjected to analysis by using of the Atomicabsorption spectrophotometer (AAS) for determination ofHg, Pb, Cd andCu concentrations in the edible soft tissues of examined shellfish.The results indicated that Hg concentrations (ug/g wet weight) inanalyzed edible tissues of crabs, shrimps, sepia and oysters were rangedfrom 0.012 to 0.603,0.021 to 0.772, 0.022 to 1.012 and 0.031 to 1.122 withmean values ofO.213±0.028, 0.262±0.038, 0.304±0.047 and 0.397±0.062,respectively. Lead levels were ranged from 0.421 to 4.192,0.512 to 6.843,0.830 to 6.602 and 0.894 to 7.651 with mean values of 1.44±0.176,2.539±0.310, 2.741±0.269 and 3.301±0.359 ug/g wet weight in examinedcrabs, shrimps, sepia and oysters, respectively.Residual cadmium concentrations were ranged from 0.012 to 0.123,0.011 to 0.242, 0.009 to 0.624 and 0.010 to 0.573 with mean values of0.027±0.005, 0.041±0.012, 0.103±0.029 and 0.137±0.028 ug/g wet weightin analyzed edible soft tissues of crabs, shrimps, sepia and oysters,respectively.
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