title: Gradient stationary phase optimized selectivity liquid chromatography with conventional columns.
abstract: Stationary phase optimized selectivity liquid chromatography (SOSLC) is a promising technique to optimize the selectivity of a given separation. By combination of different stationary phases, SOSLC offers excellent possibilities for method development under both isocratic and gradient conditions. The so far available commercial SOSLC protocol utilizes dedicated column cartridges and corresponding cartridge holders to build up the combined column of different stationary phases. The present work is aimed at developing and extending the gradient SOSLC approach towards coupling conventional columns. Generic tubing was used to connect short commercially available LC columns. Fast and base-line separation of a mixture of 12 compounds containing phenones, benzoic acids and hydroxybenzoates under both isocratic and linear gradient conditions was selected to demonstrate the potential of SOSLC. The influence of the connecting tubing on the deviation of predictions is also discussed.
authors.affiliation: Pfizer Analytical Research Centre, Ghent University, Krijgslaan 281, S4-bis, B-9000 Ghent, Belgium.
authors.forename: Kai
authors.initials: K
authors.lastname: Chen
authors.forename: Frédéric
authors.initials: F
authors.lastname: Lynen
authors.forename: Roman
authors.initials: R
authors.lastname: Szucs
authors.forename: Melissa
authors.initials: M
authors.lastname: Hanna-Brown
authors.forename: Pat
authors.initials: P
authors.lastname: Sandra
mesh_terms: D001565:Benzoates / Q000302:isolation & purification*; D002853:Chromatography, Liquid / Q000295:instrumentation; D062385:Hydroxybenzoates / Q000302:isolation & purification*; D007659:Ketones / Q000302:isolation & purification*
chemical_list: D001565:Benzoates; D062385:Hydroxybenzoates; D007659:Ketones