title: Detection and separation of fenpropathrin, flucythrinate, fluvalinate, and PP 321 by thin-layer chromatography.
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.
authors.affiliation: Indian Agricultural Research Institute, Division of Agricultural Chemicals, New Delhi.
authors.forename: R
authors.initials: R
authors.lastname: Khazanchi
authors.forename: S K
authors.initials: SK
authors.lastname: Handa
mesh_terms: D002855:Chromatography, Thin Layer; D007306:Insecticides / Q000032:analysis*; D009570:Nitriles; D010648:Phenylacetates / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis*
chemical_list: D007306:Insecticides; D009570:Nitriles; D010648:Phenylacetates; D011722:Pyrethrins; C034227:fluvalinate; C027975:flucythrinate; C044267:fenpropathrin; C037304:cyhalothrin