Monitoring of Organophosphorous Pesticides Residues in Water from the Nile River Tributaries, Egypt

Abstract

The levels of 14 organophosphorus pesticides in water samples from different tributaries of the in were monitored. water samples were collected from El Menofiya, canal water supplies (El Sarsawia, El Bagoria and Bahr Shebin), in addition to El Embaby, El Menofi and Miet Rabiha drainage canals each two month during periods of 16 month, June 2007-Septemper 2008.the water samples were extracted with methylene chloride and analyzed using a gas chromatography fitted with an flam photometric detector. In all water sample analyzed only chlorpyrifos-methyl (41.53ng L-1) and prothiphos (30.03ng L-1) were detected in only one water samples collected from El-Embaby drain.