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Journal - Association of Official Analytical Chemists

Detection and separation of fenpropathrin, flucythrinate, fluvalinate, and PP 321 by thin-layer chromatography.


PMID 2745380

Abstract

Four synthetic pyrethroids having alpha-cyano ester groups, i.e., fenpropathrin, flucythrinate, fluvalinate, and PP 321, are separated by thin-layer chromatography and detected by a new set of chromogenic reagents. Synthetic pyrethroids containing the alpha-cyano group react with sodium hydroxide to liberate cyanide which forms pink spots with o-dinitrobenzene and p-nitrobenzaldehyde. The detection limit is 0.1 microgram and the method can be applied for identification and confirmation of these synthetic pyrethroids in vegetables.

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