title: Determination of organophosphorus pesticides in fruits by on-line size-exclusion chromatography-liquid chromatography-gas chromatography-flame photometric detection.
abstract: The determination of organophosphorus pesticides in fruits by size-exclusion chromatography (SEC) on a polystyrene column coupled on-line to a gas chromatography (GC) system was unsatisfactory as a result of interfering peaks in GC. A liquid chromatography step on silica gel was therefore inserted between the SEC and GC steps to filter out polar by-products. Samples of fruit (apples, grapes and kiwi fruits) were extracted, then the extract filtered or centrifuged and injected into an automated on-line SEC-liquid chromatography-GC-flame photometric detection. Recoveries were about 95% and the detection limits about 1 ng/g.
authors: Centro Regionale per la Sperimentazione Agraria, Pozzuolo del Friuli (UD), Italy.
authors: M
authors: M
authors: De Paoli
authors: M T
authors: MT
authors: Barbina
authors: R
authors: R
authors: Mondini
authors: A
authors: A
authors: Pezzoni
authors: A
authors: A
authors: Valentino
authors: K
authors: K
authors: Grob
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D002850:Chromatography, Gel / Q000379:methods*; D002853:Chromatography, Liquid / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D009862:Online Systems; D009943:Organophosphorus Compounds / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D010783:Photometry / Q000379:methods*
chemical_list: D009943:Organophosphorus Compounds; D010575:Pesticides