بررسي عناصر سنگين (سرب، جيوه و كادميوم) در ماهيان بومي آب شيرين شيربت (Barbus grypus) و بياح (Liza abu) صيد رودخانه هاي كارون و كرخه در فصل تابستان

The study of Heavy metals (Pb, Hg and Cd ) In {Barbus grypus) and {Liza abu) in Karoon and Karkheh rivers

This study was carried out in order to measure heavy metals levels (Pb, Hg and Cd ) in following tissues muscle, liver and gills of Barbus grypus and Liza abu in Karoon and Karkheh rivers in winter 2003. The heavy metals concentration were measured by Atomic Absorption Spectrophotometery Perkin Elmer 4100.The results showed that the concentration of Pb in different organs of two mentioned species in two rivers were more than other metals (p<0.05). The heavy metals had higher concentration in gill and liver than muscle (p<0.05). The heavy metal had higher concentration in Karoon rivers than Karkheh rivers (p<0.05). The results showed that Barbus grypus was higher contaminated by heavy metals than Liza abu. The results of this study showed that heavy metals concentration changed according to the pollution of fish habitat, turget organ, type of heavy metal and fish species.