Determination of heavy metals in Liza abu from Karkheh and Bahmanshir Rivers in Khoozestan from Iran

摘要

Liza abu is a species of the Mugilidae family from rivers in Khoozestan Province of Iran. The present studywas carried out to investigate contamination of heavy metals (Hg, Cd, Pb, Cu, Zn, Fe and Mn) in gill, liver andmuscle in Liza abu from Karkheh and Bahmanshir rivers in Khoozestan, Iran, in winter 2010. Heavy metallevels in fish samples were analyzed by Perkin Elmer 4100 atomic absorption. The results show that the highestHg, Cd, Pb, Cu, Mn, Zn and Fe concentrations in fish samples were 29.66, 518.66, 1057.66, 369.33, 696μg/Kg/dw, 10.62, 13.26 mgKg-1dw. The highest and lowest concentration of heavy metals in tissues was donegill and muscle of Liza abu. Also, concentrations of heavy metals (mean±SD) in muscle, liver and gill of Lizaabu from Bahmanshir river were higher than in Liza abu from Karkheh river (P<0.05), except for concentrationof Fe that in Liza abu from Karkheh river were higher than in Liza abu from Bahmanshir river (P<0.05). Themean estimated concentrations for Cd, Hg, Cu and Zn in the present study were lower the InternationalStandards for these metals as declare by the World Health Organization (WHO), Environmental ProtectionAgency (EPA) and Food and Drug Administration (FDA), but Pb higher than FAO and FDA.