title: Assessment of MEKC suitability for residue drug monitoring on pharmaceutical manufacturing equipment.
abstract: The suitability of micellar electrokinetic chromatography for the simultaneous trace determination of several compounds (sulfamethoxazole, trimethoprim, sulfanilic acid, sulfanilamide, 3,4,5-trimethoxybenzoic acid and nonoxynol-9) was assessed. The mixture was separated within 14min at an applied voltage of 22kV by using 30mM phosphate electrolyte, containing 10mM SDS, adjusted to pH 7.8. Under optimized separation conditions acceptable levels of linearity, precision and accuracy were obtained for all compounds. The method could be used as part of a cleaning validation study when assaying trace levels of co-trimoxazole drug, some of its decomposition products and detergent in the swab samples collected from pharmaceutical manufacturing equipment, after cleaning.
authors.affiliation: Department of Anatomy, Faculty of Health Sciences, University of Pretoria, 0002 Pretoria, South Africa.
authors.forename: Madalina Brindusa
authors.initials: MB
authors.lastname: Boca
authors.forename: Etheresia
authors.initials: E
authors.lastname: Pretorius
authors.forename: Christopher
authors.initials: C
authors.lastname: Kgaje
authors.forename: Zeno
authors.initials: Z
authors.lastname: Apostolides
mesh_terms: D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D004866:Equipment Contamination; D006863:Hydrogen-Ion Concentration; D009994:Osmolar Concentration; D015662:Trimethoprim, Sulfamethoxazole Drug Combination / Q000032:analysis*
chemical_list: D015662:Trimethoprim, Sulfamethoxazole Drug Combination