title: On-line high-performance liquid chromatography-solvent evaporation-high-performance liquid chromatography-capillary gas chromatography-flame ionisation detection for the analysis of mineral oil polyaromatic hydrocarbons in fatty foods.
abstract: An automated on-line method is described that involves a first LC separation on a large column, evaporation of a 6-ml fraction in an on-line solvent evaporator, a second LC separation using a different mobile phase, fractionating the components of interest and transfer to GC through the in-line vaporizer/overflow interface. The method is designed for the injection of a large amount of food extract (e.g. up to 200 mg of fat) and is applied to the analysis of mineral oil material in a linseed oil.
authors.affiliation: Official Food Control Authority of the Canton of Zürich (Kantonales Labor), Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Moret
authors.forename: K
authors.initials: K
authors.lastname: Grob
authors.forename: L S
authors.initials: LS
authors.lastname: Conte
mesh_terms: D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004042:Dietary Fats, Unsaturated / Q000032:analysis*; D005224:Fats, Unsaturated / Q000737:chemistry*; D005410:Flame Ionization; D008043:Linseed Oil / Q000737:chemistry; D008899:Mineral Oil / Q000737:chemistry*; D009862:Online Systems / Q000295:instrumentation*; D011083:Polycyclic Compounds / Q000032:analysis*; D012997:Solvents / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004042:Dietary Fats, Unsaturated; D005224:Fats, Unsaturated; D011083:Polycyclic Compounds; D012997:Solvents; D008043:Linseed Oil; D008899:Mineral Oil