title: Short polystyrene monolith-fritted micro-liquid chromatography columns for rapid isocratic analysis of pharmaceuticals direct from plasma.
abstract: The manufacture of micro-HPLC columns with combined stationary phases, a body of 3.5-microm XTerra-C18 particles, and poly(styrene-divinylbenzene) (PS-DVB) frits is described in detail. The efficiency of the columns was assessed by rapid separation of neutral and acid compound mixtures. Direct analysis of some pharmaceuticals in plasma resulted in lower limits of detection (LOD) for salmeterol xinofate of 12.5 nanograms on-column.
authors.affiliation: Centre for Analytical Sciences, Department of Chemistry, Imperial College London, Exhibition Rd, London, SW7 2AY, UK. c.legidoquigley@ic.ac.uk
authors.forename: Cristina
authors.initials: C
authors.lastname: Legido-Quigley
authors.forename: Norman W
authors.initials: NW
authors.lastname: Smith
mesh_terms: D000420:Albuterol / Q000031:analogs & derivatives* / Q000097:blood; D000730:Androstadienes / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation* / Q000379:methods; D000068298:Fluticasone; D011137:Polystyrenes / Q000737:chemistry*; D000068299:Salmeterol Xinafoate; D013997:Time Factors
chemical_list: D000730:Androstadienes; D011137:Polystyrenes; D000068299:Salmeterol Xinafoate; D000068298:Fluticasone; D000420:Albuterol