Loss of paraoxon in aqueous acetonitrile extractions
Copyright policy )Loss of paraoxon in aqueous acetonitrile extractions
There are many methods available for the extraction.of parathion from diverse substrates for residue analysis, among which is a method wherein the pesticide is partitioned from an acetonit r i l e extract after i t has been diluted with water. Finley and co-workers (FINLEY and ROGILLIO, 1969, FINLEY, et al . , 1974) have reported the extraction of cloth for parathion u--sin-gthis technique. Similarly GUNTHER, et al. (1973, 1974) have extracted leaf homogenates by this general procedure for pesticide residue analysis. I t is easy to assume that this procedure works as well for the oxygen analog, paraoxon, as i t does for the parent parathion. However, this is not the case and tests with this method yield paraoxon recoveries as low as 13%.
- University of California, Berkeley United States
Acetonitriles, Chromatography, Gas, Parathion, Methods, Pesticide Residues, Solvents, Benzene, Paraoxon
Acetonitriles, Chromatography, Gas, Parathion, Methods, Pesticide Residues, Solvents, Benzene, Paraoxon
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