Heavy metals accumulation in muscles of Psettodes erumei, Carangoides fulvoguttatus and Thunnus tonggol in Boushehr waters

Heavy metals are the most important contaminants that aggregate in the aquatics body through food chain. The purpose of this study was to compare the concentration of heavy metals (Pb, Fe, Zn, Cr, Ni and Cd) in the muscle of Psettodes erumei, Carangoides fulvoguttatus and Thunnus tonggol in Boushehr, and also to compare these concentrations with global standards. 30 Samples of the investigated fishes were obtained from daily hunting of fishermen in Boushehr. Then the muscle tissues were washed, separated and following acid digestion, the measurement of heavy metals concentration was performed by Atomic absorption spectrometry. The mean of metal concentration of Zn, Pb, Cd, Ni, Fe and Cr for Psettodes erume were 3.11±0.14, 3.20±0.10, 2.64±0.21, 0.36±0.01, 15.44±0.33 and 0.40±0.05 ppb respectively and for Carangoides fulvoguttatus were 1.24±0.07, 0.33±0.01, 0.02±0, 32.35±0, 11.49±0 and 0.61±0.06 ppb respectively and for Thunnus tonggol were 2.34±0.14, 1.82±0.12, 0.02±0, 0.27±0, 13.37±0.07 and 0.30±0.01 ppb respectively. Statistical analysis of the results indicated that significant differences in concentration of Fe, Zn and Pb between different fishes (P0.05). The results of this investigation showed that the concentration of heavy metals including Zn, Cr, Fe and Ni in the fish muscle were less than the amounts reported by WHO