Measurement and comparison of heavy metals (Mn, Cu, Zn,Fe) in Liza abu in the Karoon and Bahmanshir Rivers in Khoozestan Province

We assessed concentration of heavy metals Mn, Cu, Zn and Fe in the muscle, liver and gill tissues of Liza abu in Karoon and Bahmanshir Rivers in Khoozestan Province in winter 2009. Metals were extracted from the tissues using wet digestion method. Concentration of the heavy metals were measured by Atomic Absorption Spectrophotometer. The highest concentration of Mn, Cu, Zn and Fe was 0.706±0.013, 0.428±0.020, 11.74±0.40, 14.04±0.08 mg/Kg. and the determined lowest concentration of Mn, Cu, Zn and Fe was 0.646±0.012, 0.289±0.033, 9.74±0.26, 11.81±0.34 mg/Kg. respectively The results showed concentration of heavy metals Mn and Zn in the muscle, liver and gill of Liza abu in Karoon and Bahmanshir Rivers found no significant difference between them (P≥0.05). Cu in the muscle and liver showed a significant difference (P≤0.05), but in gill there was no significant difference (P≥0.05). Fe in the liver and gill showed no significant difference (P≥0.05) but in the muscle there was a significant difference (P≤0.05).