Estimation of organochlorine, organophosphorus and polychlorinated biphenyl's (pcb's) pesticides residues in fish and water of Giza governorate [electronic resource].

Includes references.

Thirty samples of both fish and water were examined in this study for estimation of pesticide residues and polychlorinated Biphenyl's Three samples of both fish and surrounding water were collected from ten locations at Giza Governorate. Organochlorine pesticide was the major pollutants in fish samples and detected in 30%. However, 10 of collected water samples were contained organochlorine residues with different concentrations, DDT average in water samples ranged between (min 2.1 - max 14.6 ppb), Delta BHC 0.28. 2.6, 4.6, 5.41 ppb, B.BHC 8.9 ppb, Heptachlor 2.5 ppb, endosulfan 3.7 ppb and aIderine 0.48 ppb. Our results were above the permissible limits set by World Health Organization (1984). The obseryed residue levels for organophosphorus pesticide were detected in 20% of water samples and 30% of fish samples. For the examined water, two location contained ethoprophos 6.57 and 26.5 ppb and in 3 area fish samples contained Dichlorophos 2.9 ppb, methamidotos 1.63 ppb and malathion 0.05 ppb. Our results were below the permissible limit which is recorded by FAO/WHO (2001) which was 0.1 ppm. Concerning polychlorinated biphenyls (PCBs), they were detected in 70% of the examined water samples PCB70, PCB101 PCB105. PCB152 PCB153 PCB138 and PCBl92. Seven congeners were detected with different concentrations with an average range min 0.003- max 0.02 ppb. Only one area of collected fish samples contained PCBs congener, 44 with an average 0.006 ppb. The total PCBs were below the permissible limits in all examined samples.

Summary in Arabic.

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