Determination of ropivacaine and bupivacaine in human plasma by programmed temperature vaporiser-fast gas chromatography-mass spectrometry (PTV/fast GC/MS) utilising in-vial liquid-liquid extractionABDEL-REHIM, Mohamed.Journal of separation science. 2002, Vol 25, Num 4, pp 252-254, issn 1615-9306Article

On-Line Whole Blood Analysis Using Microextraction by Packed Sorbent and LC―MS-MSABDEL-REHIM, Mohamed.LC GC North America. 2011, Vol 29, Num 7, pp 612-618, issn 1527-5949, 7 p.Article

Microextraction by packed sorbent (MEPS): A tutorialABDEL-REHIM, Mohamed.Analytica chimica acta. 2011, Vol 701, Num 2, pp 119-128, issn 0003-2670, 10 p.Article

New trend in sample preparation: on-line microextraction in packed syringe for liquid and gas chromatography applications. I. Determination of local anaesthetics in human plasma samples using gas chromatography-mass spectrometryABDEL-REHIM, Mohamed.Journal of chromatography. B. 2004, Vol 801, Num 2, pp 317-321, issn 1570-0232, 5 p.Article

Screening of Cocaine and Its Metabolites in Human Urine Samples by Direct Analysis in Real-Time Source Coupled to Time-of-Flight Mass Spectrometry After Online Preconcentration Utilizing Microextraction by Packed SorbentJAGERDEO, Eshwar; ABDEL-REHIM, Mohamed.Journal of the American Society for Mass Spectrometry. 2009, Vol 20, Num 5, pp 891-899, issn 1044-0305, 9 p.Article

Study of the factors affecting the performance of microextraction by packed sorbent (MEPS) using liquid scintillation counter and liquid chromatography-tandem mass spectrometryALTUN, Zeki; ABDEL-REHIM, Mohamed.Analytica chimica acta. 2008, Vol 630, Num 2, pp 116-123, issn 0003-2670, 8 p.Article

Determination of dopamine and serotonin in human urine samples utilizing microextraction online with liquid chromatography/electrospray tandem mass spectrometryEL-BEQQALI, Aziza; KUSSAK, Anders; ABDEL-REHIM, Mohamed et al.Journal of separation science. 2007, Vol 30, Num 3, pp 421-424, issn 1615-9306, 4 p.Article

Microextraction in packed syringe (MEPS) for liquid and gas chromatographic applications. Part II: Determination of ropivacaine and its metabolites in human plasma samples using MEPS with liquid chromatography/tandem mass spectrometryABDEL-REHIM, Mohamed; ALTUN, Zeki; BLOMBERG, Lars et al.Journal of mass spectrometry. 2004, Vol 39, Num 12, pp 1488-1493, issn 1076-5174, 6 p.Article

Chromatographic Behavior of Bupivacaine and Five of its Major Metabolites in Human Plasma, Utilizing Solid- Phase Extraction and Capillary Gas Chromatography : GAS CHROMATOGRAPHYÖNNERUD, Hans; BASSIOUNY, Fatma; ABDEL-REHIM, Mohamed et al.Journal of chromatographic science. 2010, Vol 48, Num 4, pp 294-298, issn 0021-9665, 5 p.Article

Recent advances in microextraction by packed sorbent for bioanalysisABDEL-REHIM, Mohamed.Journal of chromatography. 2010, Vol 1217, Num 16, pp 2569-2580, issn 0021-9673, 12 p.Article

Quantitative analysis of methadone in human urine samples by microextraction in packed syringe-gas chromatography-mass spectrometry (MEPS-GC-MS)EL-BEQQALI, Aziza; ABDEL-REHIM, Mohamed.Journal of separation science. 2007, Vol 30, Num 15, pp 2501-2505, issn 1615-9306, 5 p.Article

Quantification of ropivacaine and its major metabolites in human urine samples utilizing microextraction in a packed syringe automated with liquid chromatography-tandem mass spectrometry (MEPS-LC-MS/MS)ABDEL-REHIM, Mohamed; DAHLGREN, Marie; BLOMBERG, Lars et al.Journal of separation science. 2006, Vol 29, Num 11, pp 1658-1661, issn 1615-9306, 4 p.Article

Determination of ropivacaine and its metabolites in patient urine: Advantage of liquid chromatography-tandem mass spectrometry over liquid chromatography-UV detection and liquid chromatography-mass spectrometryABDEL-REHIM, Mohamed; BIELENSTEIN, Margareta; ASKEMARK, Yvonne et al.Analytica chimica acta. 2003, Vol 492, Num 1-2, pp 253-260, issn 0003-2670, 8 p.Article

Fast and sensitive environmental analysis utilizing microextraction in packed syringe online with gas chromatography-mass spectrometry Determination of polycyclic aromatic hydrocarbons in waterEL-BEQQALI, Aziza; KUSSAK, Anders; ABDEL-REHIM, Mohamed et al.Journal of chromatography. 2006, Vol 1114, Num 2, pp 234-238, issn 0021-9673, 5 p.Article

New trends in sample preparation: on-line microextraction in packed syringe (MEPS) for LC and GC applications. Part III: Determination and validation of local anaesthetics in human plasma samples using a cation-exchange sorbent, and MEPS-LC-MS-MSALTUN, Zeki; ABDEL-REHIM, Mohamed; BLOMBERG, Lars G et al.Journal of chromatography. B. 2004, Vol 813, Num 1-2, pp 129-135, issn 1570-0232, 7 p.Article

Increasing sample preparation throughput using monolithic methacrylate polymer as packing material for 96-tip robotic deviceALTUN, Zeki; BLOMBERG, Lars G; ABDEL-REHIM, Mohamed et al.Journal of liquid chromatography & related technologies. 2006, Vol 29, Num 9-12, pp 1477-1489, issn 1082-6076, 13 p.Article

Rapid and Sensitive Method for Determination of Cyclophosphamide in Patients Plasma Samples Utilizing Microextraction by Packed Sorbent Online with Liquid Chromatography-Tandem Mass Spectrometry (MEPS-LC-MS/MS)SAID, Rana; HASSAN, Zuzan; HASSAN, Moustapha et al.Journal of liquid chromatography & related technologies. 2008, Vol 31, Num 5-8, pp 683-694, issn 1082-6076, 12 p.Article

Simultaneous determination of busulphan in plasma samples by liquid chromatography-electrospray ionization mass spectrometry utilizing microextraction in packed syringe (MEPS) as on-line sample preparation methodABDEL-REHIM, Mohamed; HASSAN, Zuzana; SKANSEM, Patrik et al.Journal of liquid chromatography & related technologies. 2007, Vol 30, Num 17-20, pp 3029-3041, issn 1082-6076, 13 p.Article

Development and validation of a liquid chromatography and tandem mass spectrometry method for determination of roscovitine in plasma and urine samples utilizing on-line sample preparationVITA, Marina; SKANSEN, Patrik; HASSAN, Moustapha et al.Journal of chromatography. B. 2005, Vol 817, Num 2, pp 303-307, issn 1570-0232, 5 p.Article

Microextraction in packed syringe/liquid chromatography/electrospray tandem mass spectrometry for quantification of acebutolol and metoprolol in human plasma and urine samplesEL-BEQQALI, Aziza; KUSSAK, Anders; BLOMBERG, Lars et al.Journal of liquid chromatography & related technologies. 2007, Vol 30, Num 1-4, pp 575-586, issn 1082-6076, 12 p.Article

Drug screening using microextraction in a packed syringe (MEPS)/mass spectrometry utilizing monolithic-, polymer-, and silica-based sorbentsALTUN, Zeki; BLOMBERE, Lars G; JAGERDEO, Eshwar et al.Journal of liquid chromatography & related technologies. 2006, Vol 29, Num 5-8, pp 829-840, issn 1082-6076, 12 p.Article

On-line derivatization utilizing solid-phase microextraction (SPME) for determination of Busulphan in plasma using gas chromatography-mass spectrometry (GC-MS)ABDEL-REHIM, Mohamed; HASSAN, Zuzana; BLOMBERG, Lars et al.Therapeutic drug monitoring. 2003, Vol 25, Num 3, pp 400-406, issn 0163-4356, 7 p.Article

Monolithic methacrylate packed 96-tips for high throughput bioanalysisALTUN, Zeki; SKOGLUND, Christina; ABDEL-REHIM, Mohamed et al.Journal of chromatography. 2010, Vol 1217, Num 16, pp 2581-2588, issn 0021-9673, 8 p.Article

Evaluation of Monolithic Packed 96-Tips for Solid-Phase Extraction of Local Anesthetics from Human Plasma for Quantitation by Liquid Chromatography Tandem Mass SpectrometryALTUN, Zeki; HJELMSTRÖM, Anette; BLOMBERG, Lars G et al.Journal of liquid chromatography & related technologies. 2008, Vol 31, Num 5-8, pp 743-751, issn 1082-6076, 9 p.Article

Surface modified polypropylene pipette tips packed with a monolithic plug of adsorbent for high-throughput sample preparationALTUN, Zeki; HJELMSTRÖM, Anette; ABDEL-REHIM, Mohamed et al.Journal of separation science. 2007, Vol 30, Num 12, pp 1964-1972, issn 1615-9306, 9 p.Article