title: Quantification of ephedrines in urine by column-switching high-performance liquid chromatography.
abstract: A method for the quantification of five congener ephedrines in urine samples without sample preparation was developed. The analytes were trapped on a C18 precolumn and separated on a C18 BDS analytical column. Baseline separation was achieved for all analytes. The method meets the requirements of the International Olympic Committee (IOC) medical commission regarding cut-off limits for positive doping cases with ephedrines.
authors.affiliation: Chemical Analysis, Austrian Research Center Seibersdorf, Austria. guenter.gmeiner@arcs.ac.at
authors.forename: G
authors.initials: G
authors.lastname: Gmeiner
authors.forename: T
authors.initials: T
authors.lastname: Geisendorfer
authors.forename: J
authors.initials: J
authors.lastname: Kainzbauer
authors.forename: M
authors.initials: M
authors.lastname: Nikolajevic
authors.forename: H
authors.initials: H
authors.lastname: Tausch
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004809:Ephedrine / Q000652:urine*; D006801:Humans; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004809:Ephedrine