The Effect of Cold and Warm Seasons on Accumulation of Nickel, Cadmium and Lead in Muscle of Acanthopagrus latus and Platycephalus indicus from Oman Sea (Chabahar)

This study was done in order to determine the concentration of heavy metals Nickle, Cadmium and Lead in the muscle of Acanthopagrus latus and Platycephalus indicus from Oman Sea (Chabahar Bay) in spring, summer and fall of 2013. In this study 48 samples of fishes were obtained from coastal and marine regions of Oman Sea (Chabahar Bay). Metals were extracted from the tissues using wet digestion method and concentration of heavy metals were measured by Younglin AAS8020 Atomic Absorption Spectrophotometer. The highest concentration of Cd, Pb and Ni were found in the muscle of Platycephalus indicus which were 0.052±0.02, 0.047±0.02 and 1.768±0.96 mg kg-1. The lowest concentration of Cd, Pb and Ni were obtained in the muscle of Acanthopagrus latus which were 0.019±0.01, 0.010±0.01 and 0.466±0.02 mg kg-1. Concentration of Cd, Pb and Ni in the two fishes from coastal zone was higher than marine area. Concentration of heavy metals in the muscle of Acanthopagrus latus and Platycephalus indicus in summer was higher than spring and fall. Concentration of Ni in the two fishes was higher than Cd and Pb. Concentration of Cd and Pb in the muscle of Platycephalus indicus from coastal and marine zone in spring, summer and fall was higher than Acanthopagrus latus, but concentration of Ni in the muscle of Acanthopagrus latus was higher than Platycephalus indicus. Concentration of Cd and Pb was lower in comparison with levels recommended by FAO, WHO, UKMAFF, NHMRC and FDA, but concentration of Ni was higher in comparison with international standards.