Behavior of Thiophanate Methyl and Propiconazole in Grape and Mango Fruits Under the Egyptian Field Conditions.

This research aims at determining residues of thiophanate methyl and propiconazole in grape and mango fruits as an indication for their persistence in this environmental compartment. Fruit extracts were analyzed for thiophanate methyl using High Performance Liquid Chromatography and using Gas Chromatography Electron Capture Detector (GC/ECD), respectively. The results indicated that propiconazole had a less environmental impact since propiconazole had shorter residue half-lives which were 1.

Estimation of etofenprox residues in tomato fruits by QuEChERS methodology and HPLC-DAD.

Etofenprox residues were estimated by employing standardized QuEChERS technique in tomato following one application of Trebon(®) 20 % EC. The average recoveries of etofenprox on tomato for fortification levels 0.01, 0.

Metals in water from the River Nile tributaries in Egypt.

The objective of this study was to evaluate the levels of Zn, Cu, Pb, Fe and Cd metals in water samples collected from different tributaries of the Nile River in Egypt. Samples were taken from El-Sarsawia, El-Bagoria, Bahr Shebin canals, in addition to three drainage canal sites El-Embaby, El-Menofi and Miet-Rabiha drain. According to the data, Fe has the highest concentration, followed by Pb, Zn, Cd and Cu.

Organophosphorus pesticides residues in fish samples from the River Nile tributaries in Egypt.

The concentration of organophosphorus pesticides in fish samples from different tributaries of the Nile River in Egypt was monitored. Fish 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 2 month during periods of 16 month, June 2007-Septemper 2008. Chloropyrifos, cadusafos, diazinon, prothiphos and malathion were detected in fish tissues samples at level below the maximum residue limit.