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-
1dw and the determined lowest concentration of Pb and Zn in the muscle of Hypophthalmichthys molitrix
0.404±0.02 and 4.71±0.17 mgKg-1dw. This study concentration of heavy metals Zn and Pb in the liver and
muscle of Hypophthalmichthys molitrix, Ctenopharyngodon idella and Aristichthys nobilis significant
difference 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 Council (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)
