The present study was carried out to investigate contamination of heavy metals Pb and Zn in liver and muscle in Cyprinus carpio and Oncorhynchus mykiss from Iran in 2001 and 2011. Heavy metal levels in fish samples were analyzed by Perkin Elmer 4100 zl atomic absorption. Sampling was done completely random and 48 number fishes were prepared of farmed fishes from the ahvaz and shehrekrod. The results show that the The highest concentration of Pb in muscle of Oncorhynchus mykiss 0.73±0.05 mgKg-1dw (2001). Also determined lowest concentration of Pb was in liver this fish 0.16±0.01 mgKg-1dw (2001).The highest concentration of Zn in the liver of Cyprinus carpio 62±5.81 mgKg-1dw (2001) and lowest concentration of Zn in muscle of Oncorhynchus mykiss2.78±0.13 mgKg-1dw (2001). This study concentration of heavy metals Zn and Pb were in the liver and muscle of Cyprinus carpio and Oncorhynchus mykiss significant difference between 2001 and 2011 (P<0.05), except Pb in muscle and liver Cyprinus carpio (P≥0.05). The mean estimated concentrations for Zn in the present study were higher than International Standards for these metals as declare by the UKMAFF and FAO. Concentrations of Pb in this study were lowest than WHO, UKMAFF, FAO, FDA and NHMRC.
کلید واژگان :Heavy metal, zinc, lead, Cyprinus carpio, Oncorhynchus mykiss
ارزش ریالی : 600000 ریال
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