The Determination of some heavy metal levels in capoeta capoeta umbla (heckel, 1843) caught in Hazar lake

II ABSTRACT Masters Thesis THE DETERMINATION OF SOME HEAVY METAL LEVELS IN CAPOETA CAPOETA UMBLA (HECKEL, 1843) CAUGTH IN HAZAR LAKE Özgür CANPOLAT Fırat University Graduate School of Natural and Applied Sciences Department of Basic Aquatic Sciences 2001, Page 50 In this study, the levels of some heavy metals (Cu, Fe, Mn, Zn, Cd, Cr, Co and Pb) in muscle, gill, skin, liver, gonad and kidney of 200 of Capoeta capoeta umbla caught in Hazar Lake (Elazığ) have been investigated. Co, Cr, Cd and Pb were not found in detectable levels in any organs and tissues according to results obtained by Atomic Absorption Spectrophotometer. The level of all heavy metals were the highest in liver and the lowest in the muscle. In addition, it has been found that the concentrations of Cu, Fe, Mn and Zn were different according to tissues and organs. The results were compared with the other tolerable values for heavy metals provided from WHO, FAO and Ministry of Agriculture and it was determined that there was not any risk for humans healty when this fish species was consumed as food. Key Words: Capoeta capoeta umbla, heavy metal, accumulation, Hazar Lake.