Showing results 101 to 120 of 123
 Automated determination of acetylsalicylic, salicylic and salicyluric acids in human plasma using solid-phase extraction and HPLCHubert, Philippe  ; Chiap, Patrice ; Ceccato, Attilio et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 2 (1 ULg)Automated determination of camazepam in human plasma by solid phase extraction coupled to HPLCHubert, Philippe ; Chiap, Patrice ; Ceccato, Attilio et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 2 (2 ULg)Enantiomeric separaiton of sotalol and other B-blockers on a chiral-AGP column using aliphatic carboxylic acids as ionic modifiersCeccato, Attilio ; Hubert, Philippe ; et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 3 (1 ULg)Automated HPLC analysis of molsidomine and two of its metabolites in human plasma using solid phase extraction as sample preparationChiap, Patrice ; Hubert, Philippe ; Ceccato, Attilio et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 18 (2 ULg)On-line combination of dialysis and liquid chromatography for the automated determination of oxprenolol in human plasma; Ceccato, Attilio ; Chiap, Patrice et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 5 (1 ULg)Determination of phenothiazines by microcolumn liquid chromatography using injection-generated gradient techniques for sample enrichment; Hubert, Philippe ; Ceccato, Attilio et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 10 (2 ULg)Comparison of solid-phase extraction and dialysis as on-line sample preparation procedures for the automated HPLC determination of verapamil and norverapamil in human plasmaChiap, Patrice ; Hubert, Philippe ; Ceccato, Attilio et alin Journal de Pharmacie de Belgique (1995), 50 Detailed reference viewed: 3 (1 ULg)Automated solid-phase extraction coupled to HPLC for the determination of drugs in biological fluidsHubert, Philippe ; Chiap, Patrice ; Ceccato, Attilio et alin Pharmacy World & Science [=PWS] (1995), 17 Detailed reference viewed: 8 (3 ULg)Enantioseparations of basic compounds by capillary electrophoresis using neutral and anionic cyclodextrinsFillet, Marianne ; ; Ceccato, Attilio et alPoster (1995) Detailed reference viewed: 3 (1 ULg) Injection-generated solvent and pH gradients for sample enrichment on injection of large volumes in microclumn liquid chromatography; Ceccato, Attilio ; Chiap, Patrice et alin Biomedical Chromatography : BMC (1995), 9 Detailed reference viewed: 6 (1 ULg)Chiral separations of basic drugs in capillary electrophoresis using cyclodextrin derivatives as chiral selectorsCrommen, Jacques ; Fillet, Marianne ; et alConference (1994) Detailed reference viewed: 6 (2 ULg)Method developement and applications of capillary electrophoresis in drug analysisCrommen, Jacques ; ; et alConference (1993) Detailed reference viewed: 5 (1 ULg)Fully automated systems for the bioanalysis of drugs and metabolites using solid-phase extraction in combination with liquid chromatographyHubert, Philippe ; Chiap, Patrice ; Ceccato, Attilio et alConference (1993) Detailed reference viewed: 5 (1 ULg)HPLC enantiomeric separation of B-blocking drugs using an alpha 1-acid glycoprotein columnCeccato, Attilio ; Hubert, Philippe ; et alin Journal de Pharmacie de Belgique (1993), 48 Detailed reference viewed: 4 (1 ULg)Analysis of basic drugs by capillary zone electrophoresis; ; Ceccato, Attilio et alPoster (1993) Detailed reference viewed: 5 (1 ULg)Evaluation of an alpha 1-acid glycoprotein chiral stationary phase for the enantioseparation of -blocking drugsCeccato, Attilio ; Hubert, Philippe ; et alPoster (1993) Detailed reference viewed: 3 (1 ULg) Determination of verapamil and norverapamil in human plasma by liquid chromatography: comparison between a liquid-liquid extraction procedure and an automated liquid-solid extraction method for sample preparation.Hubert, Philippe ; Chiap, Patrice ; Ceccato, Attilio et alin Journal of Pharmaceutical & Biomedical Analysis (1992), 10(10-12), 937-42 A conventional liquid-liquid extraction (LLE) procedure with high-performance liquid chromatography (HPLC) has been developed for the determination of verapamil and its main metabolite, norverapamil, in ... [more ▼] A conventional liquid-liquid extraction (LLE) procedure with high-performance liquid chromatography (HPLC) has been developed for the determination of verapamil and its main metabolite, norverapamil, in plasma. After addition of the internal standard, plasma samples were basified with phosphate buffer (pH 9.0) and extracted with a mixture of cyclohexane-dichloromethane. After centrifugation, the organic layer was separated and the analytes were extracted back into a 0.1 N sulphuric acid solution containing 2-aminoheptane. An aliquot of this aqueous phase was then injected directly onto the HPLC column. This LLE procedure has been compared with an automated liquid-solid extraction (LSE) method that has been developed in parallel. Good linearity was obtained using both extraction methods. The absolute recoveries for the two analytes were ca 95% with the automated LSE procedure and slightly lower (ca 84%) for the LLE method. The automated method gives better results with respect to detectability and precision, but the LLE procedure is simpler to develop, requires much less expensive equipment, and remains a useful alternative when the number of samples to be analysed is limited. [less ▲] Detailed reference viewed: 43 (5 ULg)Automatic determination of diltiazem and desacetyldiltiazem in human plasma using liquid-solid extraction on disposable cartridges coupled to HPLC; Hubert, Philippe ; Ceccato, Attilio et alConference (1992) Detailed reference viewed: 6 (1 ULg)Enantiomeric separation of basic drugs on an ovomucoid columnCeccato, Attilio ; Hubert, Philippe ; et alin Journal de Pharmacie de Belgique (1992), 47 Detailed reference viewed: 10 (1 ULg)Separation and quantitative analysis of amino acids by capillary zone electrophoresis with indirect photometric detection; Ceccato, Attilio ; Hubert, Philippe et alin Journal de Pharmacie de Belgique (1992), 47 Detailed reference viewed: 4 (1 ULg) |
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