Heavy metals are among important pollutants of environment. They may enter to the sea from costal areas and rivers. They accumulate in body of aquatic organisms through food chain. Macrophyts as a trophic level absorb heavy metals. Thus, macrphytes can be used as an indicator of heavy metal accumulation. In the present research three species (Phragmites australis, Typha angustjfolia and Potamogeton crispus) and sediment at six stations in Miankaleh Wetland have been determine concentration of zinc, lead, cupper and cadmium and effect of macrophyts in refining of heavy metals. The results show that average concentration of lead in Ph. Austrais. T. angustfolia, P. crispus and sediment are 5.3ppm, 4ppm, 5.4ppm and 19.83ppm, respectively. For zinc 290.83 ppm, 203.33 ppm, 141.55ppm and 274.33 ppm respectively. For cupper 7.63 ppm, 5.4 ppm, 4.58ppm, 0.5ppm and 1 .33ppm repectively. The highest accumulation of metal in Ph. Australis and T Angustfolia was in root and in P. Crispus was similar in different organs.
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