title: Screening for library-assisted identification and fully validated quantification of 22 beta-blockers in blood plasma by liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization.
abstract: A liquid chromatographic-mass spectrometric assay with atmospheric pressure chemical ionization (LC-APCI-MS) is presented for screening for, library-assisted identification (both in scan mode) and quantification (selected-ion mode) of the beta-blockers acebutolol, diacetolol, alprenolol, atenolol, betaxolol, bisoprolol, bupranolol, carazolol, carteolol, carvedilol, celiprolol, esmolol, labetalol, metoprolol, nadolol, nebivolol, oxprenolol, penbutolol, propranolol, sotalol, talinolol and timolol in blood plasma after mixed-mode (HCX) solid-phase extraction (SPE) and separation by reverse-phase liquid chromatography with gradient elution. The validation data were within the required limits. The assay was successfully applied to authentic plasma samples allowing confirmation of diagnosis of overdose situations as well as monitoring of patients' compliance.
authors.affiliation: Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, University of Saarland, D-66421 Homburg (Saar), Germany. hans.maurer@uniklinik-saarland.de
authors.forename: Hans H
authors.initials: HH
authors.lastname: Maurer
authors.forename: Oliver
authors.initials: O
authors.lastname: Tenberken
authors.forename: Carsten
authors.initials: C
authors.lastname: Kratzsch
authors.forename: Armin A
authors.initials: AA
authors.lastname: Weber
authors.forename: Frank T
authors.initials: FT
authors.lastname: Peters
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000097:blood*; D001274:Atmospheric Pressure; D002853:Chromatography, Liquid / Q000379:methods*; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D000319:Adrenergic beta-Antagonists