title: High performance liquid chromatographic separations of gas oil samples and their hydrotreated products using commercial normal phases.
abstract: Three commercially available high performance liquid chromatography columns are used in normal phase or quasi-normal phase mode for the separation of gas oil samples. The columns are tested with 20 analytical standards to determine their suitability for separations of petroleum samples and their ability to separate the nitrogen group-types (pyrrole and pyridine) found in petroleum. The columns studied are polymeric hypercrosslinked polystyrene (HGN), a biphenyl phase, and a Chromegabond "DNAP" column from ES Industries. The HGN column separates gas oils based on both ring structure and heteroatom, while the biphenyl phase has low retention of most compounds studied in quasi-normal phase mode. The "DNAP" column is selective for nitrogen-containing compounds, separating them from PAHs as well as oxygen and sulphur compounds. Retention data of standards on all three columns is shown, along with chromatograms of gas oil samples on the HGN and "DNAP" columns.
authors.affiliation: Department of Chemistry, University of Alberta, Gunning/Lemieux Chemistry Centre, Edmonton, Alberta T6G 2G2, Canada.
authors.forename: Nicole E
authors.initials: NE
authors.lastname: Oro
authors.forename: Charles A
authors.initials: CA
authors.lastname: Lucy
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D008956:Models, Chemical; D009821:Oils / Q000737:chemistry*; D017601:Oxygen Compounds / Q000302:isolation & purification; D010578:Petroleum / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000302:isolation & purification; D011137:Polystyrenes / Q000737:chemistry; D011725:Pyridines / Q000302:isolation & purification; D011758:Pyrroles / Q000302:isolation & purification; D013457:Sulfur Compounds / Q000302:isolation & purification
chemical_list: D009821:Oils; D017601:Oxygen Compounds; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons; D011137:Polystyrenes; D011725:Pyridines; D011758:Pyrroles; D013457:Sulfur Compounds