Association between water pollution and insecticides and their residues in fish

ABSTRACT

Forty water samples were collected from Lake Maryut and Alexandria Hydrodrome. Twenty samples were collected from each locality during summer months, at the same time, other 40 samples of Tilapia galilea fish, each weighed 100-150 g, were obtained from the same localities from which water samples were collected. After estimation of some organochlorine and organophosphorus insecticide residues in water and fish samples using gas liquid chromatography [GLC]. The results were evaluated according to water quality criteria [1968] and Joint FAO/WHO [1978]. The obtained data indicated a correlation between detected insecticides residues DDT, dieldrin and dimethoate in fish and their concentration in water. The data also indicated that the level of insecticides in Alexandria Hydrodrome water and fish samples is higher than in Maryut samples. The insecticide hazards as well as public health importance were discussed