Non-aqueous capillary zone electrophoresis method for the analysis of paroxetine, tamoxifen, and their main metabolites in urine

被引:26
作者
Flores, JR
Nevado, JJB
Salcedo, AMC
Díaz, MPC
机构
[1] Univ Castilla La Mancha, Dept Analyt Chem, E-13071 Ciudad Real, Spain
[2] Foods Technol, E-13071 Ciudad Real, Spain
关键词
non-aqueous capillary electrophoresis; paroxetine; tamoxifen; metabolites; ruggedness; human urine;
D O I
10.1016/j.aca.2004.02.048
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The potential of non-aqueous capillary electrophoresis (NACE) was investigated for the simultaneous separation of paroxetine, tamoxifen, and their main metabolites. Baseline separation of the studied solutes was obtained on a 57 cm x 75 mum capillary using a non-aqueous buffer composed of 18 mM ammonium acetate and 1.1% acetic acid in 80:20 (v/v) methanol-acetonitrile, with a temperature and voltage of 22degreesC and 15 kV, respectively. Clomipramine was used as internal standard. Aspects such as stability of the solutions, linearity, accuracy, precision and ruggedness were examined in order to validate the proposed method. Detection limits obtained for all the studied compounds ranged between 3.0 and 7.1 mug l(-1). The developed method is sensitive and robust and was used to determine paroxetine, tamoxifen, and their metabolites at clinically relevant levels in human urine. Before NACE determination, the samples were purified and enriched by means of an extraction-pre-concentration step with a pre-conditioned C-18 cartridge. Determination of these analytes in the urine of four females urines was demonstrated. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:287 / 295
页数:9
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