Contaminants in terms of pesticide residues in selected fish sources

الملخص EN

The problem at hand is dealing with the assessment of selected fish species with respect to their content of pesticide residues.

The investigated fish include; Caranx, Red Mullet, Crabs, Clams, Sole of Qaroun, lake Sole of Bardawil lagoon and Catfish.

The results indicated the presence of 15 components of organ chlorine pesticides, namely ; α-benzene hex chloride (α-BHC), γ-benzene hex chloride + β-benzene hex chloride (γ-BHC + β-BHC), Heptachlor, Aldrin, Heptachorepoxide, γ-chlordane, α-chlordane, 1,1-dichloro-2,2-bis (P-chlorophyll) ethylene (P,P-DDE), Dieldrine, Endrin 1, -1 dichloro 2, 2-bis (P-chlorophyll) ethane (P,P-DDD), 1,1,1-trichloro-2,2-bis (P-chlorophyll) ethane (P,P-DDT)) Endosulfan sulfate, Methoxychlor and Endrin ketone.

Concentrations of chlorinated hydrocarbons in tissues, serve as good indicators of environmental loads.

The determination of organ chlorine residues became necessary since in high-polluted regions, the polychlorinated biphenyls (PCBs) are a point of discussion.

With respect to fish samples (Sole) collected from Bardawil lagoon, the obtained results indicated that none of the identified pesticides were detected in it.

Subsequently, it could be stated that Bardawil lagoon is the best source of fish and is considered to be completely free from pollutants.

On contrary Sole of Qaroun Lake contain six types of pesticides and the lowest frequently detected one was 8.49 μg / Kg as Heptachlor while the highest concentration of methoxychlor was 1268.68 μg / Kg in the same sample.

The residual concentration of the aforementioned pesticides varied within the tested fishes and Sole of Bardawil lagoon proved to be completely free from any residual amounts of the investigated pesticides as indicated and proved by statistical analysis, through the principal component and factorial analysis.