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Abstract
The paper describes a new sensitive and selective thin layer chromatographic method for the detection of some organophosphorous pesticides. Fifteen organophosphorous pesticides have been separated on thin layer using different stationary phases prepared at the “Raluca Ripan” Institute of Chemistry Cluj-Napoca, Roumania (silica gel R, amino bonded silica gel R) and some mixtures with different polarities as mobile phase (petroleum ether + chloroform + ethyl acetate 65:30:5, v/v).
The detection was performed by spraying the TLC plates with a 9-methylacridine solution (0.05%) in ethanol and their examination under UV light at 366 nm. The spots present different colors and intensities. Detection limit is between 0.1 - 10 spot.