A study of Heavy Metals Consentration in water,sediments and Cyprinus carpio, Abramis brama, Carassius carassius Species From Anzali Wetland

摘要

In the present study, some heavy metals (Pb, Cd, Zn,Cr and Cu) were determined in water, sediment and some tissues of Cyprinus carpio,Abramis brama,Carassius carassiusfrom Anzaliwetland. Heavy metal levels in water, sediment and fish samples were analyzed by atomic absorption spectrophotometer. Also we studied condition factor for species. In this studyCarassius carassiushad best condition factor across caught species. the analysis of heavy metals in sediments and water indicated that among the heavy metals tested, Zn was maximum , followed by Cu, Pb,Cr and Cd. Heavy metal concentrations were found to decrease in sequence of the fish samples, in the muscle as Zn > Cu> Pb > Cr > Cd . The bioaccumulation factors obtained for the various heavy metals and were all less than 1.00 implying no bio-accumulation. Cu and Zn with the highest bioaccumulation factors was the most bio-accumulated and bio-magnified of all the metals studied