title: Silica-based monolithic columns versus conventional particle-packed columns for liquid chromatographic analysis of tetracycline, oxytetracycline and chlortetracycline.
abstract: The rise of monolithic stationary phases offers to routine and research laboratories several advantages. In spite of their recent discovery, they have rapidly become highly popular separation media for liquid chromatography. Time reduction and economic reasons like e.g. a diminished use of mobile phase are the most important ones. At the same time, it was reported that these columns offer a faster and better separation. The aim of this article was to investigate the transferability of methods originally developed on conventional particle-packed C(18) columns (XTerra RP18 and Zorbax RX), onto the more recent monolithic columns. Both types, conventional particle-packed and monolithic columns, were able to separate tetracycline, oxytetracycline and chlortetracycline from their respective impurities with sufficient resolution, but showed remarkably shorter analysis times and lower backpressures, improving the lifetime of the column.
authors.affiliation: Katholieke Universiteit Leuven, Laboratorium voor Farmaceutische Analyse, O&N 2, PB 923, Herestraat 49, B-3000 Leuven, Belgium.
authors.forename: Erik
authors.initials: E
authors.lastname: Haghedooren
authors.forename: Liesbeth
authors.initials: L
authors.lastname: Peeters
authors.forename: Sanja
authors.initials: S
authors.lastname: Dragovic
authors.forename: Jos
authors.initials: J
authors.lastname: Hoogmartens
authors.forename: Erwin
authors.initials: E
authors.lastname: Adams
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis; D002751:Chlortetracycline / Q000032:analysis; D002853:Chromatography, Liquid / Q000295:instrumentation*; D010118:Oxytetracycline / Q000032:analysis; D012822:Silicon Dioxide; D013752:Tetracycline / Q000032:analysis; D013754:Tetracyclines / Q000032:analysis*
chemical_list: D000900:Anti-Bacterial Agents; D013754:Tetracyclines; D012822:Silicon Dioxide; D013752:Tetracycline; D002751:Chlortetracycline; D010118:Oxytetracycline