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