Organochlorine Pesticides (OCs) and Polychlorinated Biphenyls (PCBs) in Tilapia zillii from Lake El-Manzala, Egypt PDF

Keywords

Fish, Tilapia zillii, Lake Manzala, Organochlorine pesticides, Polychlorinated biphenyls, Concentration, Egypt

Abstract

A freshwater fish species, (Tilapia zillii) from Lake El-Manzala was analyzed for concentrations of several Organochlorine pesticides (OCs) and Polychlorinated biphenyls (PCBs) in liver, gonads, mesenteric fat, flesh and the digestive tract in mature fish during the breeding season. Polychlorinated biphenyls (PCBs) and Organochlorine pesticides (OCs) were calculated in (ng/g) dry weight (dw) in homogenized samples. The obtained results revealed differences in lipid content between these different organs. The females showed higher lipid content than males. There was significant positive correlation between the lipid content and organochlorines and polychlorinated biphenyls (PCBs). The results come concomitant with the lipophilicity of studied compounds. However, the recorded concentrations of these studied pollutants still do not exceed the international hazardous levels.