Gas-liqiid chromatographic determination of pydrin, a synthetic pyrethroid, in cabbage and lettuce.
Pydrin, alpha-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)-3-methylbutyrate, a synthetic pyrethroid ester, is extracted from vegetables with acetonitrile, partitioned into petroleum ether before cleanup on a Florisil column, and analyzed by electron capture gas-liquid chromatography. Recoveries of 88-102% at 0.01 ppm, 99-102% at 0.1 ppm, and 98-104% at 1.0 ppm were obtained from fortified cabbage and lettuce samples. The method appears applicable to detection of the residues of Pydrin in the foliage of many types of crops.
D001937:Brassica / Q000032:analysis; D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D007306:Insecticides / Q000032:analysis*; D009570:Nitriles / Q000032:analysis; D010654:Phenylbutyrates / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis; D014675:Vegetables / Q000032:analysis*
D007306:Insecticides; D009570:Nitriles; D010654:Phenylbutyrates; D011722:Pyrethrins; C017690:fenvalerate