Gas-liqiid chromatographic determination of pydrin, a synthetic pyrethroid, in cabbage and lettuce
- PMID: 681258
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Gas-liqiid chromatographic determination of pydrin, a synthetic pyrethroid, in cabbage and lettuce
J Assoc Off Anal Chem.
1978 Jul.
Abstract
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.
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