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Gerhardus De Jong

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TOP 3
Bregje J de Kort; Gerhardus J De Jong; Govert W Somsen
Native fluorescence detection of biomolecular and pharmaceutical compounds in capillary electrophoresis: detector designs, performance and applications: a review.
Miranda G M Kok; Marco M A Ruijken; Govert W Somsen; Jonathan R Swann; Ian D Wilson; Gerhardus J De Jong
Anionic metabolic profiling of urine from antibiotic-treated rats by capillary electrophoresis-mass spectrometry.
Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Low-flow sheathless capillary electrophoresis-mass spectrometry for sensitive glycoform profiling of intact pharmaceutical proteins.

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2013: Bregje J de Kort; Gerhardus J De Jong; Govert W Somsen
Native fluorescence detection of biomolecular and pharmaceutical compounds in capillary electrophoresis: detector designs, performance and applications: a review.
Analytica chimica acta 2013;766():13-33.
2013: Miranda G M Kok; Marco M A Ruijken; Govert W Somsen; Jonathan R Swann; Ian D Wilson; Gerhardus J De Jong
Anionic metabolic profiling of urine from antibiotic-treated rats by capillary electrophoresis-mass spectrometry.
Analytical and bioanalytical chemistry 2013;405(8):2585-94.
2013: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Low-flow sheathless capillary electrophoresis-mass spectrometry for sensitive glycoform profiling of intact pharmaceutical proteins.
Analytical chemistry 2013;85(4):2289-96.
2013: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
CE-MS for the analysis of intact proteins 2010-2012.
Electrophoresis 2013;34(1):99-112.
2013: Rawi Ramautar; Govert W Somsen; Gerhardus J De Jong
CE-MS for metabolomics: developments and applications in the period 2010-2012.
Electrophoresis 2013;34(1):86-98.
2012: Yvonne H Tak; Javier Sastre Toraño; Govert W Somsen; Gerhardus J De Jong
Optimization of in-line fritless solid-phase extraction for capillary electrophoresis-mass spectrometry.
Journal of chromatography. A 2012;1267():138-43.
2012: Bregje J de Kort; Gerhardus J De Jong; Govert W Somsen
Profiling of erythropoietin products by capillary electrophoresis with native fluorescence detection.
Electrophoresis 2012;33(19-20):2996-3001.
2012: Javier Sastre Toraño; Henriette Schluepmann; Sjef Smeekens; Gerhardus J De Jong; Thierry L Delatte; Govert W Somsen
Determination of trehalose-6-phosphate in Arabidopsis thaliana seedlings by hydrophilic-interaction liquid chromatography-mass spectrometry.
Analytical and bioanalytical chemistry 2012;403(5):1353-60.
2012: Igor Botello; Marta Calull; Carme Aguilar; Francesc Borrull; Govert W Somsen; Gerhardus J De Jong
In-line solid-phase extraction-capillary electrophoresis coupled with mass spectrometry for determination of drugs of abuse in human urine.
Analytical and bioanalytical chemistry 2012;403(3):777-84.
2011: Y H Tak; Govert W Somsen; Gerhardus J De Jong
Optimization of dynamic pH junction for the sensitive determination of amino acids in urine by capillary electrophoresis.
Analytical and bioanalytical chemistry 2011;401(10):3275-81.
2011: Miranda G M Kok; Gerhardus J De Jong; Govert W Somsen
Sensitivity enhancement in capillary electrophoresis-mass spectrometry of anionic metabolites using a triethylamine-containing background electrolyte and sheath liquid.
Electrophoresis 2011;32(21):3016-24.
2011: Paul Hommerson; Amjad M Khan; Gerhardus J De Jong; Govert W Somsen
Ionization techniques in capillary electrophoresis-mass spectrometry: principles, design, and application.
Mass spectrometry reviews 2011;30(6):1096-120.
2011: Thierry L Delatte; Youichi Kondou; Minami Matsui; Matthew J Paul; Lucia F Primavesi; Prapti Sedijani; Govert W Somsen; Anika Wiese-Klinkenberg; Gerhardus J De Jong; Henriette Schluepmann
Growth arrest by trehalose-6-phosphate: an astonishing case of primary metabolite control over growth by way of the SnRK1 signaling pathway.
Plant physiology 2011;157(1):160-74.
2011: Bregje J de Kort; Gerhardus J De Jong; Geert A ten Kate; Govert W Somsen
Capillary electrophoresis with lamp-based wavelength-resolved fluorescence detection for the probing of protein conformational changes.
Analytical chemistry 2011;83(15):6060-7.
2011: R Haselberg; R J Kok; Gerhardus J De Jong; M E M Dolman; S Harmsen; Govert W Somsen
Characterization of drug-lysozyme conjugates by sheathless capillary electrophoresis-time-of-flight mass spectrometry.
Analytica chimica acta 2011;698(1-2):77-83.
2011: Eleazar Martínez-Barajas; Thierry Delatte; Henriette Schluepmann; Gerhardus J De Jong; Govert W Somsen; Cátia Nunes; Lucia F Primavesi; Patricia Coello; Rowan A C Mitchell; Matthew J Paul
Wheat grain development is characterized by remarkable trehalose 6-phosphate accumulation pregrain filling: tissue distribution and relationship to SNF1-related protein kinase1 activity.
Plant physiology 2011;156(1):373-81.
2011: T L Delatte; Henriette Schluepmann; Sjef Smeekens; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry analysis of trehalose-6-phosphate in Arabidopsis thaliana seedlings.
Analytical and bioanalytical chemistry 2011;400(4):1137-44.
2011: R Haselberg; V Brinks; A Hawe; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry using noncovalently coated capillaries for the analysis of biopharmaceuticals.
Analytical and bioanalytical chemistry 2011;400(1):295-303.
2011: Michiel H M van de Meent; Sebastiaan Eeltink; Gerhardus J De Jong
Potential of poly(styrene-co-divinylbenzene) monolithic columns for the LC-MS analysis of protein digests.
Analytical and bioanalytical chemistry 2011;399(5):1845-52.
2011: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry for the analysis of intact proteins 2007-2010.
Electrophoresis 2011;32(1):66-82.
2011: Rawi Ramautar; Oleg Mayboroda; Govert W Somsen; Gerhardus J De Jong
CE-MS for metabolomics: Developments and applications in the period 2008-2010.
Electrophoresis 2011;32(1):52-65.
2011: Rawi Ramautar; Ekaterina Nevedomskaya; Oleg Mayboroda; André M Deelder; Ian D Wilson; Helen G Gika; Georgios Theodoridis; Govert W Somsen; Gerhardus J De Jong
Metabolic profiling of human urine by CE-MS using a positively charged capillary coating and comparison with UPLC-MS.
Molecular bioSystems 2011;7(1):194-9.
2010: Rob Haselberg; Chitra K Ratnayake; Gerhardus J De Jong; Govert W Somsen
Performance of a sheathless porous tip sprayer for capillary electrophoresis-electrospray ionization-mass spectrometry of intact proteins.
Journal of chromatography. A 2010;1217(48):7605-11.
2010: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry of intact basic proteins using Polybrene-dextran sulfate-Polybrene-coated capillaries: system optimization and performance.
Analytica chimica acta 2010;678(1):128-34.
2010: Bregje J de Kort; Gerhardus J De Jong; Govert W Somsen
Lamp-based wavelength-resolved fluorescence detection for protein capillary electrophoresis: setup and detector performance.
Electrophoresis 2010;31(17):2861-8.
2010: Rawi Ramautar; Javier Sastre Toraño; Govert W Somsen; Gerhardus J De Jong
Evaluation of CE methods for global metabolic profiling of urine.
Electrophoresis 2010;31(14):2319-27.
2010: Govert W Somsen; Roelof Mol; Gerhardus J De Jong
On-line coupling of electrokinetic chromatography and mass spectrometry.
Journal of chromatography. A 2010;1217(25):3978-91.
2010: Anne-Catherine Servais; Marianne Fillet; Roelof Mol; Anne Rousseau; Jacques Crommen; Govert W Somsen; Gerhardus J De Jong
Influence of the BGE composition on analyte response in CD-mediated NACE-MS.
Electrophoresis 2010;31(7):1157-61.
2010: Christiaan H Vinkers; Gerdien A H Korte-Bouws; Javier Sastre Toraño; Naheed R Mirza; Elsebet Ø Nielsen; Philip K Ahring; Gerhardus J De Jong; Berend Olivier
The rapid hydrolysis of chlordiazepoxide to demoxepam may affect the outcome of chronic osmotic minipump studies.
Psychopharmacology 2010;208(4):555-62.
2010: Rawi Ramautar; Govert W Somsen; Gerhardus J De Jong
Recent developments in coupled SPE-CE.
Electrophoresis 2010;31(1):44-54.
2009: Rob Haselberg; Lineke van der Sneppen; Freek Ariese; Wim Ubachs; Cees Gooijer; Gerhardus J De Jong; Govert W Somsen
Effectiveness of charged noncovalent polymer coatings against protein adsorption to silica surfaces studied by evanescent-wave cavity ring-down spectroscopy and capillary electrophoresis.
Analytical chemistry 2009;81(24):10172-8.
2009: Rawi Ramautar; Anton A van der Plas; Ekaterina Nevedomskaya; Rico J E Derks; Govert W Somsen; Gerhardus J De Jong; Jacobus J van Hilten; André M Deelder; Oleg Mayboroda
Explorative analysis of urine by capillary electrophoresis-mass spectrometry in chronic patients with complex regional pain syndrome.
Journal of proteome research 2009;8(12):5559-67.
2009: Paul Hommerson; Amjad M Khan; Tony Bristow; Mark W Harrison; Gerhardus J De Jong; Govert W Somsen
Drug impurity profiling by capillary electrophoresis/mass spectrometry using various ionization techniques.
Rapid communications in mass spectrometry : RCM 2009;23(18):2878-84.
2009: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis of intact basic proteins using noncovalently triple-layer coated capillaries.
Journal of separation science 2009;32(14):2408-15.
2009: Paul Hommerson; Amjad M Khan; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-atmospheric pressure chemical ionization-mass spectrometry using an orthogonal interface: set-up and system parameters.
Journal of the American Society for Mass Spectrometry 2009;20(7):1311-8.
2009: Thierry L Delatte; Maurice H J Selman; Henriette Schluepmann; Govert W Somsen; Sjef Smeekens; Gerhardus J De Jong
Determination of trehalose-6-phosphate in Arabidopsis seedlings by successive extractions followed by anion exchange chromatography-mass spectrometry.
Analytical biochemistry 2009;389(1):12-7.
2009: Linda H H Silvertand; Javier Sastre Toraño; Gerhardus J De Jong; Wouter P van Bennekom
Development and characterization of cIEF-MALDI-TOF MS for protein analysis.
Electrophoresis 2009;30(10):1828-35.
2009: Govert W Somsen; Yvonne H Tak; Javier Sastre Toraño; Peter M J M Jongen; Gerhardus J De Jong
Determination of oversulfated chondroitin sulfate and dermatan sulfate impurities in heparin by capillary electrophoresis.
Journal of chromatography. A 2009;1216(18):4107-12.
2009: Rawi Ramautar; C K Ratnayake; Govert W Somsen; Gerhardus J De Jong
Capillary electrophoresis-mass spectrometry using an in-line sol-gel concentrator for the determination of methionine enkephalin in cerebrospinal fluid.
Talanta 2009;78(2):638-42.
2009: E C A Stigter; Gerhardus J De Jong; Wouter P van Bennekom
Development of an on-line SPR-digestion-nanoLC-MS/MS system for the quantification and identification of interferon-gamma in plasma.
Biosensors & bioelectronics 2009;24(7):2184-90.
2009: Michiel H M van de Meent; Gerhardus J De Jong
Potential of long capillary monolithic columns for the analysis of protein digests.
Journal of separation science 2009;32(4):487-93.
2009: Rawi Ramautar; Govert W Somsen; Gerhardus J De Jong
CE-MS in metabolomics.
Electrophoresis 2009;30(1):276-91.
2008: L H H Silvertand; Javier Sastre Toraño; Wouter P van Bennekom; Gerhardus J De Jong
Recent developments in capillary isoelectric focusing.
Journal of chromatography. A 2008;1204(2):157-70.
2008: Paul Hommerson; Amjad M Khan; Gerhardus J De Jong; Govert W Somsen
Comparison of electrospray ionization and atmospheric pressure photoionization for coupling of micellar electrokinetic chromatography with ion trap mass spectrometry.
Journal of chromatography. A 2008;1204(2):197-203.
2008: Roelof Mol; Gerhardus J De Jong; Govert W Somsen
Cyclodextrin-based nonaqueous electrokinetic chromatography with UV and mass spectrometric detection: application to the impurity profiling of amiodarone.
Electrophoresis 2008;29(17):3575-81.
2008: Rawi Ramautar; Oleg Mayboroda; André M Deelder; Govert W Somsen; Gerhardus J De Jong
Metabolic analysis of body fluids by capillary electrophoresis using noncovalently coated capillaries.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2008;871(2):370-4.
2008: E C A Stigter; Gerhardus J De Jong; Wouter P van Bennekom
Pepsin immobilized in dextran-modified fused-silica capillaries for on-line protein digestion and peptide mapping.
Analytica chimica acta 2008;619(2):231-8.
2008: Rawi Ramautar; Oleg Mayboroda; Rico J E Derks; Cees van Nieuwkoop; Jaap T van Dissel; Govert W Somsen; André M Deelder; Gerhardus J De Jong
Capillary electrophoresis-time of flight-mass spectrometry using noncovalently bilayer-coated capillaries for the analysis of amino acids in human urine.
Electrophoresis 2008;29(12):2714-22.
2008: Linda H H Silvertand; Javier Sastre Toraño; Gerhardus J De Jong; Wouter P van Bennekom
Improved repeatability and matrix-assisted desorption/ionization - time of flight mass spectrometry compatibility in capillary isoelectric focusing.
Electrophoresis 2008;29(10):1985-96.
2008: Patricia Puig; F W Alexander Tempels; Govert W Somsen; Gerhardus J De Jong; Francesc Borrull; Carme Aguilar; Marta Calull
Use of large-volume sample stacking in on-line solid-phase extraction-capillary electrophoresis for improved sensitivity.
Electrophoresis 2008;29(6):1339-46.
2008: Roelof Mol; Gerhardus J De Jong; Govert W Somsen
Coupling of non-aqueous electrokinetic chromatography using cationic cyclodextrins with electrospray ionization mass spectrometry.
Rapid communications in mass spectrometry : RCM 2008;22(6):790-6.
2008: F W Alexander Tempels; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
Design and applications of coupled SPE-CE.
Electrophoresis 2008;29(1):108-28.
2007: E C A Stigter; Gerhardus J De Jong; Wouter P van Bennekom
Development of an open-tubular trypsin reactor for on-line digestion of proteins.
Analytical and bioanalytical chemistry 2007;389(6):1967-77.
2007: Patricia Puig; F W Alexander Tempels; Francesc Borrull; Marta Calull; Carme Aguilar; Govert W Somsen; Gerhardus J De Jong
On-line coupling of solid-phase extraction and capillary electrophoresis for the determination of cefoperazone and ceftiofur in plasma.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2007;856(1-2):365-70.
2007: Rob Haselberg; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry for the analysis of intact proteins.
Journal of chromatography. A 2007;1159(1-2):81-109.
2007: Roelof Mol; Anne-Catherine Servais; Marianne Fillet; Jacques Crommen; Gerhardus J De Jong; Govert W Somsen
Nonaqueous electrokinetic chromatography-electrospray ionization mass spectrometry using anionic cyclodextrins.
Journal of chromatography. A 2007;1159(1-2):51-7.
2007: Paul Hommerson; Amjad M Khan; Tony Bristow; Wilfried Niessen; Gerhardus J De Jong; Govert W Somsen
Photon-independent gas-phase-ion formation in capillary electrophoresis-mass spectrometry using atmospheric pressure photoionization.
Analytical chemistry 2007;79(14):5351-7.
2007: Jonatan R Catai; Javier Sastre Toraño; Peter M J M Jongen; Gerhardus J De Jong; Govert W Somsen
Analysis of recombinant human growth hormone by capillary electrophoresis with bilayer-coated capillaries using UV and MS detection.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2007;852(1-2):160-6.
2007: M H M van de Meent; Gerhardus J De Jong
Improvement of the liquid-chromatographic analysis of protein tryptic digests by the use of long-capillary monolithic columns with UV and MS detection.
Analytical and bioanalytical chemistry 2007;388(1):195-200.
2007: Paul Hommerson; Amjad M Khan; Gerhardus J De Jong; Govert W Somsen
Comparison of atmospheric pressure photoionization and ESI for CZE-MS of drugs.
Electrophoresis 2007;28(9):1444-53.
2007: F W Alexander Tempels; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
On-line coupling of SPE and CE-MS for peptide analysis.
Electrophoresis 2007;28(9):1319-26.
2007: Jonatan R Catai; Javier Sastre Toraño; Gerhardus J De Jong; Govert W Somsen
Capillary electrophoresis-mass spectrometry of proteins at medium pH using bilayer-coated capillaries.
The Analyst 2007;132(1):75-81.
2007: Rawi Ramautar; Govert W Somsen; Gerhardus J De Jong
Direct sample injection for capillary electrophoretic determination of organic acids in cerebrospinal fluid.
Analytical and bioanalytical chemistry 2007;387(1):293-301.
2006: Roelof Mol; Else Kragt; Ilias Jimidar; Gerhardus J De Jong; Govert W Somsen
Micellar electrokinetic chromatography-electrospray ionization mass spectrometry for the identification of drug impurities.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;843(2):283-8.
2006: Constantinos Zacharis; F W Alexander Tempels; Georgios Theodoridis; Anastasios N Voulgaropoulos; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
Coupling of sequential injection analysis and capillary electrophoresis - Laser-induced fluorescence via a valve interface for on-line derivatization and analysis of amino acids and peptides.
Journal of chromatography. A 2006;1132(1-2):297-303.
2006: L H H Silvertand; Egidijus Machtejevas; R Hendriks; Klaus K Unger; Wouter P van Bennekom; Gerhardus J De Jong
Selective protein removal and desalting using microchip CE.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;839(1-2):68-73.
2006: F W Alexander Tempels; Gerard Wiese; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
On-line coupling of size exclusion chromatography and capillary electrophoresis via solid-phase extraction and a Tee-split interface.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;839(1-2):30-5.
2006: Johan Rozenbrand; Wouter P van Bennekom; Klaus K Unger; Gerhardus J De Jong
Fast LC separation of a myoglobin digest: a case study using monolithic and particulate RP 18 silica capillary columns.
Analytical and bioanalytical chemistry 2006;385(6):1055-61.
2006: Jonatan R Catai; Javier Sastre Toraño; Gerhardus J De Jong; Govert W Somsen
Efficient and highly reproducible capillary electrophoresis-mass spectrometry of peptides using Polybrene-poly(vinyl sulfonate)-coated capillaries.
Electrophoresis 2006;27(11):2091-9.
2006: Roland Djang'eing'a Marini; Carl Groom; François R Doucet; Jalal Hawari; Yaser Bitar; Ulrike Holzgrabe; Roberto Gotti; Julie Schappler; Serge Rudaz; Jean-Luc Veuthey; Roelof Mol; Govert W Somsen; Gerhardus J De Jong; Pham Thi Thanh Ha; Jie Zhang; Ann Van Schepdael; Jos Hoogmartens; Willy Briône; Attilio Ceccato; Bruno Boulanger; Debby Mangelings; Yvan Vander Heyden; Willy Van Ael; Ilias Jimidar; Matteo Pedrini; Anne-Catherine Servais; Marianne Fillet; Jacques Crommen; Eric Rozet; Ph Hubert
Interlaboratory study of a NACE method for the determination of R-timolol content in S-timolol maleate: assessment of uncertainty.
Electrophoresis 2006;27(12):2386-99.
2006: Harm A G Niederländer; E H M Koster; Martijn J Hilhorst; H J Metting; M Eilders; B Ooms; Gerhardus J De Jong
High throughput therapeutic drug monitoring of clozapine and metabolites in serum by on-line coupling of solid phase extraction with liquid chromatography-mass spectrometry.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;834(1-2):98-107.
2006: Anne-Catherine Servais; Marianne Fillet; Roelof Mol; Govert W Somsen; Patrice Chiap; Gerhardus J De Jong; Jacques Crommen
On-line coupling of cyclodextrin mediated nonaqueous capillary electrophoresis to mass spectrometry for the determination of salbutamol enantiomers in urine.
Journal of pharmaceutical and biomedical analysis 2006;40(3):752-7.
2006: Govert W Somsen; Roelof Mol; Gerhardus J De Jong
Micellar electrokinetic chromatography-mass spectrometry: combining the supposedly incompatible.
Analytical and bioanalytical chemistry 2006;384(1):31-3.
2005: PV van Zomeren; H J Metting; P M J Coenegracht; Gerhardus J De Jong
Simultaneous resolution of overlapping peaks in high-performance liquid chromatography and micellar electrokinetic chromatography with diode array detection using augmented iterative target transformation factor analysis.
Journal of chromatography. A 2005;1096(1-2):165-76.
2005: E C A Stigter; Gerhardus J De Jong; Wouter P van Bennekom
An improved coating for the isolation and quantitation of interferon-gamma in spiked plasma using surface plasmon resonance (SPR).
Biosensors & bioelectronics 2005;21(3):474-82.
2005: Martijn Kranendijk; Joop C M Waterval; Govert W Somsen; Gerhardus J De Jong
Evaluation of the sensitivity of miniaturized liquid chromatography-electrospray ionization-mass spectrometry for pharmaceutical analysis.
Journal of separation science 2005;28(14):1796-802.
2005: Roelof Mol; Gerhardus J De Jong; Govert W Somsen
Atmospheric pressure photoionization for enhanced compatibility in on-line micellar electrokinetic chromatography-mass spectrometry.
Analytical chemistry 2005;77(16):5277-82.
2005: Jonatan R Catai; Heli A Tervahauta; Gerhardus J De Jong; Govert W Somsen
Noncovalently bilayer-coated capillaries for efficient and reproducible analysis of proteins by capillary electrophoresis.
Journal of chromatography. A 2005;1083(1-2):185-92.
2005: M Bart; E C A Stigter; H R Stapert; Gerhardus J De Jong; Wouter P van Bennekom
On the response of a label-free interferon-gamma immunosensor utilizing electrochemical impedance spectroscopy.
Biosensors & bioelectronics 2005;21(1):49-59.
2005: Thom Stroink; Mireya Castillo Ortiz; Auke Bult; Henk Lingeman; Gerhardus J De Jong; Willy J M Underberg
On-line multidimensional liquid chromatography and capillary electrophoresis systems for peptides and proteins.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2005;817(1):49-66.
2005: Roelof Mol; Gerhardus J De Jong; Govert W Somsen
On-line capillary electrophoresis-mass spectrometry using dopant-assisted atmospheric pressure photoionization: setup and system performance.
Electrophoresis 2005;26(1):146-54.
2005: Georgios Theodoridis; Gerhardus J De Jong
Solid-phase microextraction: a new tool in contemporary bioanalysis.
Advances in chromatography 2005;43():231-71.
2004: F W Alexander Tempels; Jan Teeuwsen; Ioannis K Kyriakou; Georgios Theodoridis; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
Chromatographic preconcentration coupled on-line to capillary electrophoresis via a tee-split interface.
Journal of chromatography. A 2004;1053(1-2):263-8.
2004: F W Alexander Tempels; Willy J M Underberg; Govert W Somsen; Gerhardus J De Jong
Chromatographic preconcentration coupled to capillary electrophoresis via an in-line injection valve.
Analytical chemistry 2004;76(15):4432-6.
2004: Jonatan R Catai; Govert W Somsen; Gerhardus J De Jong
Efficient and reproducible analysis of peptides by capillary electrophoresis using noncovalently bilayer-coated capillaries.
Electrophoresis 2004;25(6):817-24.
2004: PV van Zomeren; A Hoogvorst; P M J Coenegracht; Gerhardus J De Jong
Optimisation of high-performance liquid chromatography with diode array detection using an automatic peak tracking procedure based on augmented iterative target transformation factor analysis.
The Analyst 2004;129(3):241-8.
2004: Jonas H C Eriksson; Roelof Mol; Govert W Somsen; W L J Hinrichs; Henderik W Frijlink; Gerhardus J De Jong
Feasibility of nonvolatile buffers in capillary electrophoresis-electrospray ionization-mass spectrometry of proteins.
Electrophoresis 2004;25(1):43-9.
2003: Jonas H C Eriksson; W L J Hinrichs; Gerhardus J De Jong; Govert W Somsen; Henderik W Frijlink
Investigations into the stabilization of drugs by sugar glasses: III. The influence of various high-pH buffers.
Pharmaceutical research 2003;20(9):1437-43.
2003: M W J van Hout; C M Hofland; Harm A G Niederländer; Andries P Bruins; Rokus A de Zeeuw; Gerhardus J De Jong
On-line coupling of solid-phase extraction with mass spectrometry for the analysis of biological samples. III. Determination of prednisolone in serum.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2003;794(1):185-92.
2003: Govert W Somsen; Roelof Mol; Gerhardus J De Jong
On-line micellar electrokinetic chromatography-mass spectrometry: feasibility of direct introduction of non-volatile buffer and surfactant into the electrospray interface.
Journal of chromatography. A 2003;1000(1-2):953-61.
2003: H J C Eriksson; Willem Ronald Verweij; Klaas Poelstra; W L J Hinrichs; Gerhardus J De Jong; Govert W Somsen; Henderik W Frijlink
Investigations into the stabilisation of drugs by sugar glasses: II. Delivery of an inulin-stabilised alkaline phosphatase in the intestinal lumen via the oral route.
International journal of pharmaceutics 2003;257(1-2):273-81.
2003: Thom Stroink; Pim Schravendijk; Gerard Wiese; Jan Teeuwsen; Henk Lingeman; Joop C M Waterval; Auke Bult; Gerhardus J De Jong; Willy J M Underberg
On-line coupling of size-exclusion chromatography and capillary zone electrophoresis via a reversed-phase C18 trapping column for the determination of peptides in biological samples.
Electrophoresis 2003;24(6):1126-34.
2003: Thom Stroink; Gerard Wiese; Jan Teeuwsen; Henk Lingeman; Joop C M Waterval; Auke Bult; Gerhardus J De Jong; Willy J M Underberg
On-line coupling of size exclusion and capillary zone electrophoresis via a reversed-phase C18 trapping column for the analysis of structurally related enkephalins in cerebrospinal fluid.
Electrophoresis 2003;24(5):897-903.
2003: H J C Eriksson; M Wijngaard; W L J Hinrichs; Henderik W Frijlink; Govert W Somsen; Gerhardus J De Jong
Potential of capillary electrophoresis for the monitoring of the stability of placental alkaline phosphatase.
Journal of pharmaceutical and biomedical analysis 2003;31(2):351-7.
2003: M W J van Hout; Harm A G Niederländer; Rokus A de Zeeuw; Gerhardus J De Jong
Ion suppression in the determination of clenbuterol in urine by solid-phase extraction atmospheric pressure chemical ionisation ion-trap mass spectrometry.
Rapid communications in mass spectrometry : RCM 2003;17(3):245-50.
2002: H J C Eriksson; W L J Hinrichs; Bert van Veen; Govert W Somsen; Gerhardus J De Jong; Henderik W Frijlink
Investigations into the stabilisation of drugs by sugar glasses: I. Tablets prepared from stabilised alkaline phosphatase.
International journal of pharmaceutics 2002;249(1-2):59-70.
2002: Thom Stroink; Gerard Wiese; Jan Teeuwsen; Henk Lingeman; Joop C M Waterval; Auke Bult; Gerhardus J De Jong; Willy J M Underberg
On-line coupling of SEC and RP-LC for the determination of structurally related enkephalins in cerebrospinal fluid.
Journal of pharmaceutical and biomedical analysis 2002;30(4):1393-401.
2002: Govert W Somsen; H T M E Welten; F Ph Mulder; C W Swart; I P Kema; Gerhardus J De Jong
Capillary electrophoresis with laser-induced fluorescence detection for fast and reliable apolipoprotein E genotyping.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2002;775(1):17-26.
2002: E H M Koster; C H P Bruins; Gerhardus J De Jong
On-fiber derivatization for direct immersion solid-phase microextraction. Part II. Acylation of amphetamine with pentafluorobenzoyl chloride for urine analysis.
The Analyst 2002;127(5):598-602.
2002: Theo De Boer; Roelof Mol; Rokus A de Zeeuw; Gerhardus J De Jong; David C Sherrington; Peter A G Cormack; Kees Ensing
Spherical molecularly imprinted polymer particles: a promising tool for molecular recognition in capillary electrokinetic separations.
Electrophoresis 2002;23(9):1296-300.
2002: Georgios Theodoridis; Willem Haasnoot; Geert Cazemier; Robert Schilt; M Jaziri; B Diallo; Ioannis N Papadoyannis; Gerhardus J De Jong
Immunoaffinity chromatography for the sample pretreatment of Taxus plant and cell extracts prior to analysis of taxanes by high-performance liquid chromatography.
Journal of chromatography. A 2002;948(1-2):177-85.
2002: M W J van Hout; V Jas; Harm A G Niederländer; Rokus A de Zeeuw; Gerhardus J De Jong
Non-equilibrium solid-phase microextraction coupled directly to ion-trap mass spectrometry for rapid analysis of biological samples.
The Analyst 2002;127(3):355-9.
2002: M W J van Hout; W M A van Egmond; Jan Piet Franke; Rokus A de Zeeuw; Gerhardus J De Jong
Feasibility of the direct coupling of solid-phase extraction-pipette tips with a programmed-temperature vaporiser for gas chromatographic analysis of drugs in plasma.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2002;766(1):37-45.
2001: Martijn J Hilhorst; Govert W Somsen; Gerhardus J De Jong
Capillary electrokinetic separation techniques for profiling of drugs and related products.
Electrophoresis 2001;22(12):2542-64.
2001: E H M Koster; C Crescenzi; W den Hoedt; Kees Ensing; Gerhardus J De Jong
Fibers coated with molecularly imprinted polymers for solid-phase microextraction.
Analytical chemistry 2001;73(13):3140-5.
2001: H J C Eriksson; Govert W Somsen; W L J Hinrichs; Henderik W Frijlink; Gerhardus J De Jong
Characterization of human placental alkaline phosphatase by activity and protein assays, capillary electrophoresis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.
Journal of chromatography. B, Biomedical sciences and applications 2001;755(1-2):311-9.
2001: Theo De Boer; Roelof Mol; Rokus A de Zeeuw; Gerhardus J De Jong; Kees Ensing
Enantioseparation of ofloxacin in urine by capillary electrokinetic chromatography using charged cyclodextrins as chiral selectors and assessment of enantioconversion.
Electrophoresis 2001;22(7):1413-8.
2001: Martijn J Hilhorst; A F Derksen; M Steringa; Govert W Somsen; Gerhardus J De Jong
Towards a general approach for the impurity profiling of drugs by micellar electrokinetic chromatography.
Electrophoresis 2001;22(7):1337-44.
2000: Theo De Boer; Rokus A de Zeeuw; Gerhardus J De Jong; Kees Ensing
Recent innovations in the use of charged cyclodextrins in capillary electrophoresis for chiral separations in pharmaceutical analysis.
Electrophoresis 2000;21(15):3220-39.
2000: Georgios Theodoridis; E H M Koster; Gerhardus J De Jong
Solid-phase microextraction for the analysis of biological samples.
Journal of chromatography. B, Biomedical sciences and applications 2000;745(1):49-82.
2000: E H M Koster; Gerhardus J De Jong
Multiple solid-phase microextraction.
Journal of chromatography. A 2000;878(1):27-33.
2000: Martijn J Hilhorst; Govert W Somsen; Gerhardus J De Jong
Capillary electrochromatography of basic compounds using octadecyl-silica stationary phases with an amine-containing mobile phase.
Journal of chromatography. A 2000;872(1-2):315-21.
2000: E H M Koster; C Wemes; J B Morsink; Gerhardus J De Jong
Determination of lidocaine in plasma by direct solid-phase microextraction combined with gas chromatography.
Journal of chromatography. B, Biomedical sciences and applications 2000;739(1):175-82.
2000: PV van Zomeren; Martijn J Hilhorst; P M J Coenegracht; Gerhardus J De Jong
Resolution optimisation in micellar electrokinetic chromatography using empirical models.
Journal of chromatography. A 2000;867(1-2):247-59.
2000: M W J van Hout; C M Hofland; Harm A G Niederländer; Gerhardus J De Jong
On-line coupling of solid-phase extraction with mass spectrometry for the analysis of biological samples. II. Determination of clenbuterol in urine using multiple-stage mass spectrometry in an ion-trap mass spectrometer.
Rapid communications in mass spectrometry : RCM 2000;14(22):2103-11.
1999: C H Bruins; C M Jeronimus-Stratingh; Kees Ensing; W D van Dongen; Gerhardus J De Jong
On-line coupling of solid-phase extraction with mass spectrometry for the analysis of biological samples. I. Determination of clenbuterol in urine.
Journal of chromatography. A 1999;863(1):115-22.
1999: M W J van Hout; Rokus A de Zeeuw; Gerhardus J De Jong
Coupling device for desorption of drugs from solid-phase extraction-pipette tips and on-line gas chromatographic analysis.
Journal of chromatography. A 1999;858(1):117-22.
1999: Theo De Boer; Rokus A de Zeeuw; Gerhardus J De Jong; Kees Ensing
Selectivity in capillary electrokinetic separations.
Electrophoresis 1999;20(15-16):2989-3010.
1999: M W J van Hout; Rokus A de Zeeuw; Jan Piet Franke; Gerhardus J De Jong
Evaluation of the programmed temperature vaporiser for large-volume injection of biological samples in gas chromatography.
Journal of chromatography. B, Biomedical sciences and applications 1999;729(1-2):199-210.
1998: Martijn J Hilhorst; M W J van Hout; Govert W Somsen; Jan Piet Franke; Gerhardus J De Jong
Profiling of cocaine by micellar electrokinetic chromatography.
Journal of capillary electrophoresis 1998;5(3-4):159-64.
1998: Martijn J Hilhorst; Govert W Somsen; Gerhardus J De Jong
Choice of capillary electrophoresis systems for the impurity profiling of drugs.
Journal of pharmaceutical and biomedical analysis 1998;16(7):1251-60.