Lead and Zinc levels insilver carp ( HypophthalmichthysmolitrixValenciennes , 1844),grass carp ( Ctenopharyngodonidella , Cuvier and Valenciennes, 1844) and bighead carp ( Aristichthysnobilis ,Richardson, 1845) from Iran

摘要

The present study was carried out to investigate contamination of heavy metals Pb and Zn in liver and muscle in Hypophthalmichthys molitrix , Ctenopharyngodon idella and Aristichthys nobilis , Iran, in 2011. Heavy metal levels in fish samples were analyzed by Perkin Elmer 4100 zl atomic absorption. The results show that the highest concentration of Pb and Zn in the liver of Ctenopharyngodon idella 0.607±0.02 and 8.26±0.33 mgKg - 1 dw and the determined lowest concentration of Pb a nd Zn in the muscle of Hypophthalmichthys molitrix 0.404±0.02 and 4.71±0.17 mgKg - 1 dw. This study concentration of heavy metals Zn and Pb in the liver and muscle of Hypophthalmichthys molitrix , Ctenopharyngodon idella and Aristichthys nobilis significant di fference between (P<0.05). The mean estimated concentrations for Zn in the present study were lowest than International Standards for these metals as declare by the Ministry of Agriculture, Fisheries and Food (UK) and National Health & Medical Research Cou ncil (Australia ), but concentrations of Pb in this study were lowest than International Standards World Health Organization ( WHO ), Ministry of Agriculture, Fisheries and Food (UK) and National Health & Medical Research Council (Australia )