Gas–liquid chromatographic determination of aldicarb, aldicarb sulfoxide and aldicarb sulfone in soils and water using a hall electrolytic conductivity detector

Abstract

A method is described for the determination of individual components of toxic aldicarb residues (aldicarb sulfoxide and aldicarb sulfone) in water and soils using a gas chromatographic method with the Hall electrolytic conductivity detector. Aldicarb and its metabolites were extracted from water by chloroform and from soils by water–acetone and water–methanol mixtures. They were separated on a Florisil column and identified by GLC after conversion into aldicarb sulfone by peracetic acid oxidation. The sensitivity of the method is ca. 0.05 ppm of aldicarb.