Residues and half-lives of certain insecticides on and in some vegetables under field conditions [electronic resource].

Includes references.

The present study was carried out to determine the residual behaviour of fenitrothion, profenofos and pyrazofos pesticides on and in tomato and cucumber fruits. The initial residues were 1.92, 2.45 and 0.54 ppm for fenitrothion, profenofos and pyrazofos on and in tomato fruits, respectively. While the initial deposits of profenolos and pyrazofos were 2.40 and 0.68 ppm on and in cucumber fruits. The analytical data showed a gradual decrease of tested pesticide residues with time. Results revealed that the residue half-lives for fenitrothion, profenofos and pyrazofos in tomato fruits were 29. 23 and 20 hours, respectively, also results revealed that the residue halflives were 18 and 22 hours for profenofos and pyrazofos on and in cucumber fruits.

Summary in Arabic.

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