title: High-performance liquid chromatographic-tandem mass spectrometric determination of 3-hydroxypropylmercapturic acid in human urine.
abstract: A sensitive and specific high-performance liquid chromatographic-tandem mass spectrometric (HPLC-MS-MS) method was developed for the determination of 3-hydroxypropylmercapturic acid (3-HPMA) in human urine. Samples were extracted using ENV+ cartridges and then injected onto a C8 Superspher Select B column with acetonitrile and formic acid as eluent (5:95, v/v). N-Acetylcysteine was used as internal standard for HPLC-MS-MS. Linearity was given in the tested range of 50-5000 ng/ml urine. The limit of quantification was 50 ng/ml. Precision, as C.V., in the tested range of 50-5000 ng/ml was 1.47-6.04%. Accuracy ranged from 87 to 114%. 3-HPMA was stable in human urine at 37 degrees C for 24 h. The method was able to quantify 3-HPMA in urine of non-smokers and smokers.
authors.affiliation: Pharm Analyt Laboratory GmbH, Baden, Austria. pharm-analyt@eunet.at
authors.forename: D G
authors.initials: DG
authors.lastname: Mascher
authors.forename: H J
authors.initials: HJ
authors.lastname: Mascher
authors.forename: G
authors.initials: G
authors.lastname: Scherer
authors.forename: E R
authors.initials: ER
authors.lastname: Schmid
mesh_terms: D000111:Acetylcysteine / Q000031:analogs & derivatives / Q000652:urine*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D013058:Mass Spectrometry / Q000379:methods*; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: C001423:S-(3-hydroxypropyl)cysteine N-acetate; D000111:Acetylcysteine