title: Liquid chromatographic/mass spectrometric determination of desmedipham and phenmedipham and their metabolites in soil.
abstract: A simple method is described for the simultaneous determination of residues of 2 carbamate herbicides (phenmedipham and desmedipham) and related metabolites (m-aminophenol, aniline, and m-toluidine) in soil. The analytes are extracted from spiked soils with methanol. The solvent/soil suspension is centrifuged, and the supernatant is directly injected, without any further cleanup, into a reversed-phase liquid chromatography/mass spectrometry apparatus equipped with a TurbolonSpray interface. The method was tested on 5 soils having different physicochemical properties. Recoveries from the soil types, spiked over the range of 50-200 ppb, were essentially quantitative for each analyte. The detection limits of the method are < or = 25 ng/g.
authors.affiliation: Università La Sapienza di Roma, Dipartimento di Chimica, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Perret
authors.forename: A
authors.initials: A
authors.lastname: Gentili
authors.forename: S
authors.initials: S
authors.lastname: Marchese
authors.forename: A
authors.initials: A
authors.lastname: Marin
authors.forename: F
authors.initials: F
authors.lastname: Bruno
mesh_terms: D002219:Carbamates / Q000032:analysis*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002853:Chromatography, Liquid; D006540:Herbicides / Q000032:analysis*; D013058:Mass Spectrometry; D010573:Pesticide Residues / Q000032:analysis*; D012015:Reference Standards; D015203:Reproducibility of Results; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D012997:Solvents
chemical_list: D002219:Carbamates; D006540:Herbicides; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D012997:Solvents; C001984:desmedipham; C100128:phenmedipham