Bioaccumulation of Heavy Metals in Organs of Fresh Water Fish Clarias Batrachus (Mangur)

Abstract

The present study is to determine the bioaccumulation of heavy metals invarious organs of the fresh water fish Clarias batrachus exposed to heavy metalcontaminated water system. The experimental fish were exposed to Cr, Ni, Cd andPb concentrations for periods of 48 days.the heavy metals Cd, Pb, Ni & Cr wereassayed using atomic absorption spectrophotometery and the result were givenas μg/g dry Wt. The accumulation of heavy metals gradually increases in liverduring the heavy metals exposure period. The heavy metal accumulation in thegills was in the order of Pb>Cd>Ni>Cr, the heavy metal accumulation in the liverwas in the order of Pb>Cd>Ni>Cr. The bioaccumulation in kidney and flesh tissueswas in the order of Pb>Cd>Cr>Ni and Cr>Pb>Cd>Ni.