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K. Ensing · SciRah

Researcher profile · Semantic Scholar

K. Ensing

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K. Ensing — researcher profile on SciRah

h-index: 21
Works: 108
Citations: 2,012

Most-cited papers

Fibers coated with molecularly imprinted polymers for solid-phase microextraction.
E. Koster, C. Crescenzi, Widia den Hoedt, K. Ensing +1 more
2001Analytical Chemistry225 citations
Semantic Scholar
Evaluation of methods aimed at complete removal of template from molecularly imprinted polymers.
Arndt Ellwanger, C. Berggren, S. Bayoudh, Carlo Crecenzi +6 more
2001In Analysis220 citations
Semantic Scholar
Determination of clenbuterol in bovine liver by combining matrix solid-phase dispersion and molecular imprinted solid-phase extraction followed by liquid chromatography/electrospray ion trap multiple-stage mass spectrometry.
C. Crescenzi, Sami Bayoudh, P. A. G. Cormack, T. Klein +1 more
2001Analytical Chemistry150 citations
Semantic Scholar
Recent innovations in the use of charged cyclodextrins in capillary electrophoresis for chiral separations in pharmaceutical analysis
T. de Boer, R. D. de Zeeuw, G. D. de Jong, K. Ensing
2000Electrophoresis134 citations
Semantic Scholar
Extraction of clenbuterol from calf urine using a molecularly imprinted polymer followed by quantitation by high-performance liquid chromatography with UV detection.
A. Blomgren, C. Berggren, A. Holmberg, F. Larsson +2 more
2002Journal of Chromatography A123 citations
Semantic Scholar
Use of molecularly imprinted solid-phase extraction for the selective clean-up of clenbuterol from calf urine.
C. Berggren, Sami Bayoudh, D. Sherrington, K. Ensing
2000Journal of Chromatography A98 citations
Semantic Scholar
Spherical molecularly imprinted polymer particles: A promising tool for molecular recognition in capillary electrokinetic separations
T. de Boer, R. Mol, R. D. de Zeeuw, G. D. de Jong +3 more
2002Electrophoresis70 citations
Semantic Scholar
Capillary electrophoresis as a versatile tool for the bioanalysis of drugs--a review.
C. M. Boone, J. Waterval, H. Lingeman, K. Ensing +1 more
1999Journal of Pharmaceutical and Biomedical Analysis70 citations
Semantic Scholar
On-line coupling of solid-phase extraction with mass spectrometry for the analysis of biological samples. I. Determination of clenbuterol in urine.
C. H. P. Bruins, C. Jeronimus-Stratingh, K. Ensing, W. V. van Dongen +1 more
1999Journal of Chromatography A53 citations
Semantic Scholar
Pitfalls and solutions in the development of a fully automated solid-phase extraction method for drug screening purposes in plasma and whole blood.
Xiao-Hua Chen, J. Franke, K. Ensing, Jaap Wijsbeek +1 more
1993Journal of Analytical Toxicology41 citations
Semantic Scholar
Pharmacokinetics of ipratropium bromide after single dose inhalation and oral and intravenous administration
K. Ensing, R. D. de Zeeuw, G. Nossent, G. Koeter +1 more
2004European Journal of Clinical Pharmacology39 citations
Semantic Scholar
Enantioseparation of ofloxacin in urine by capillary electrokinetic chromatography using charged cyclodextrins as chiral selectors and assessment of enantioconversion
T. de Boer, R. Mol, R. D. de Zeeuw, G. D. de Jong +1 more
2001Electrophoresis33 citations
Semantic Scholar
Dynamically coated capillaries improve the identification power of capillary zone electrophoresis for basic drugs in toxicological analysis.
C. M. Boone, E. Z. Jonkers, J. Franke, R. D. de Zeeuw +1 more
2001Journal of Chromatography A31 citations
Semantic Scholar
Evaluation of capillary electrophoretic techniques towards systematic toxicological analysis.
C. M. Boone, J. Franke, R. D. de Zeeuw, K. Ensing
1999Journal of Chromatography A26 citations
Semantic Scholar
Clinically relevant anterograde amnesia and its relationship with blood levels of benzodiazepines in suicide attempters who took an overdose.
B. Verwey, A. Muntendam, K. Ensing, G. Essink +3 more
2005Progress in Neuro-psychopharmacology and Biological Psychiatry25 citations
Semantic Scholar
Selectivity in capillary electrokinetic separations
T. de Boer, R. D. de Zeeuw, G. D. de Jong, K. Ensing
1999Electrophoresis25 citations
Semantic Scholar
Immobilization of antibodies as a versatile tool in hybridized capillary electrophoresis.
K. Ensing, Aran Paulus
1996Journal of Pharmaceutical and Biomedical Analysis25 citations
Semantic Scholar
Screening for the presence of drugs in serum and urine using different separation modes of capillary electrophoresis.
C. M. Boone, Jan Willem Douma, J. Franke, R. D. de Zeeuw +1 more
2001Forensic Science International24 citations
Semantic Scholar
Intra‐ and interinstrument reproducibility of migration parameters in capillary electrophoresis for substance identification in systematic toxicological analysis
C. M. Boone, J. Franke, R. D. de Zeeuw, K. Ensing
2000Electrophoresis23 citations
Semantic Scholar
Imaging Beta-Adrenoceptors in the Human Brain with (5)-l'-[18F]Fluorocarazolol
Hoshi H, Jinnouchi S. Nagamachi, Wantanabe K, Mituyama Y. The +20 more
200622 citations
Semantic Scholar
Determination of the enantiomeric purity of (-) terbutaline by capillary electrophoresis using cyclodextrins as chiral selectors in a polyethylene glycol gel.
T. de Boer, K. Ensing
1998Journal of Pharmaceutical and Biomedical Analysis21 citations
Semantic Scholar
Standardization procedure for the in vitro skin permeation of anticholinergics
I. Bosman, K. Ensing, R. D. de Zeeuw
199820 citations
Semantic Scholar
Characterisation of β2-adrenoceptors, using the agonist []formoterol and positron emission tomography
T. Visser, A. van Waarde, P. Doze, P. Elsinga +4 more
199820 citations
Semantic Scholar
Methodological aspects of quantitative receptor assays.
J. S̆misterová, K. Ensing, R. D. de Zeeuw
1994Journal of Pharmaceutical and Biomedical Analysis20 citations
Semantic Scholar
Semi-automated solid-phase extraction procedure for drug screening in biological fluids using the ASPEC system in combination with Clean Screen DAU columns.
Xiao-Hua Chen, J. Franke, K. Ensing, J. Wijsbeek +1 more
1993Journal of Chromatography A20 citations
Semantic Scholar
Modelling of conditions for the enantiomeric separation of beta2-adrenergic sympathicomimetics by capillary electrophoresis using cyclodextrins as chiral selectors in a polyethylene glycol gel.
Theo de de Boer, R. Bijma, K. Ensing
1999Journal of Pharmaceutical and Biomedical Analysis19 citations
Semantic Scholar
Development and registration of chiral drugs
D. T. Witte, K. Ensing, J. Franke, R. A. Zeeuw
1993Pharmacy World & Science19 citations
Semantic Scholar
Novel diffusion cell for in vitro transdermal permeation, compatible with automated dynamic sampling.
I. Bosman, A. L. Lawant, S. R. Avegaart, K. Ensing +1 more
1996Journal of Pharmaceutical and Biomedical Analysis18 citations
Semantic Scholar
Application of Empore C-8 extraction disks for screening urine in systematic toxicological analysis.
K. Ensing, J. Franke, Anita Temmink, Xiao-Hua Chen +1 more
1992Journal of Forensic Sciences17 citations
Semantic Scholar
Interlaboratory reproducibility of mobility parameters in capillary electrophoresis for substance identification in systematic toxicological analysis
C. M. Boone, G. Manetto, F. Tagliaro, J. Waterval +4 more
2002Electrophoresis16 citations
Semantic Scholar
Radioreceptor assays of ipratropium bromide in plasma and urine.
K. Ensing, M. Pol, R. D. de Zeeuw
1988Journal of Pharmaceutical and Biomedical Analysis15 citations
Semantic Scholar
Development and validation of fluorescent receptor assays based on the human recombinant estrogen receptor subtypes alpha and beta.
T. de Boer, Debby Otjens, A. Muntendam, E. Meulman +2 more
2004Journal of Pharmaceutical and Biomedical Analysis14 citations
Semantic Scholar
Application of radioreceptor assays for systematic toxicological analysis--1. Procedures for radioreceptor assays for antihistaminics, anticholinergics and benzodiazepines.
K. Ensing, I. Bosman, A. C. G. Egberts, J. Franke +1 more
1994Journal of Pharmaceutical and Biomedical Analysis14 citations
Semantic Scholar
Solid phase extraction of morphine from whole blood by means of Bond Elut Certify columns.
Xiao-Hua Chen, Alexandra L. C. Hommerson, P. Zweipfenning, J. Franke +3 more
1993Journal of Forensic Sciences14 citations
Semantic Scholar
Characterization of pulmonary and myocardial beta-adrenoceptors with S-1'-[fluorine-18]
T. Visser, A. van Waarde, J. Kraan, P. Elsinga +8 more
200613 citations
Semantic Scholar
Influence of the sample volume and the position of the electrode and the capillary-end in the sample vial on the electrokinetic injection in capillary electrophoresis
T. de Boer, K. Ensing
199713 citations
Semantic Scholar
Separation and identification of neuropeptide Y, two of its fragments and their degradation products using capillary electrophoresis-mass spectrometry.
K. Ensing, T. de Boer, Nanno Schreuder, R. D. de Zeeuw
1999Journal of Chromatography B: Biomedical Sciences and Applications12 citations
Semantic Scholar
Identification with liquid chromatography-ionspray mass spectrometry of the metabolites of the enantiomers N-methyl dextrorphan and N-methyl levorphanol after rat liver perfusion.
A. B. L. Lanting, A. P. Bruins, B. Drenth, K. D. de Jonge +3 more
1993Biological Mass Spectrometry11 citations
Semantic Scholar
Determination of the benzodiazepine plasma concentrations in suicidal patients using a radioreceptor assay.
Lutea A. A. de Jong, B. Verwey, G. Essink, A. Muntendam +2 more
2004Journal of Analytical Toxicology10 citations
Semantic Scholar
Comparison of intravenous and endobronchial atropine: a pharmacokinetic and -dynamic study in pigs.
U. Hörnchen, J. Schüttler, H. Stoeckel, K. Ensing +2 more
1989European Journal of Anaesthesiology10 citations
Semantic Scholar
Development and application of a radioreceptor assay for scopolamine.
K. Ensing, W. G. In 't Hout, P. Halma, H. Klinkers +2 more
1988Arzneimittel-Forschung10 citations
Semantic Scholar
Centrifugation or filtration in quantitative radioreceptor assays.
K. Ensing, K. G. Feitsma, D. Bloemhof, W. G. In 't Hout +1 more
1986Journal of Biochemical and Biophysical Methods10 citations
Semantic Scholar
A fluorescent receptor assay for benzodiazepines using coumarin-labeled desethylflumazenil as ligand.
M. J. Janssen, K. Ensing, R. D. de Zeeuw
2001Analytical Chemistry9 citations
Semantic Scholar
Evaluation of a novel diffusion cell for in vitro transdermal permeation: effects of injection height, volume and temperature.
I. Bosman, S. R. Avegaart, A. L. Lawant, K. Ensing +1 more
1998Journal of Pharmaceutical and Biomedical Analysis9 citations
Semantic Scholar
HPLC-UV ATMOSPHERIC-PRESSURE IONIZATION MASS-SPECTROMETRIC DETERMINATION OF THE DOPAMINE-D2 AGONIST N-0923 AND ITS MAJOR METABOLITES AFTER OXIDATIVE-METABOLISM BY RAT-LIVER, MONKEY LIVER, AND HUMAN LIVER-MICROSOMES
P. Swart, G. Bronner, A. Bruins, K. Ensing +2 more
19939 citations
Semantic Scholar
Improved benzodiazepine radioreceptor assay using the MultiScreen Assay System.
M. J. Janssen, K. Ensing, R. D. de Zeeuw
1999Journal of Pharmaceutical and Biomedical Analysis8 citations
Semantic Scholar
Solubilized benzodiazepine receptors for use in receptor assays.
M. J. Janssen, M. Stegeman, K. Ensing, R. D. de Zeeuw
1996Journal of Pharmaceutical and Biomedical Analysis8 citations
Semantic Scholar
Application of radioreceptor assays for systematic toxicological analysis--2. Theoretical considerations and evaluation.
K. Ensing, I. Bosman, A. Egberts, J. Franke +1 more
1994Journal of Pharmaceutical and Biomedical Analysis8 citations
Semantic Scholar
Influence of chemical structure of tricyclic tertiary dimethylamines on chiral separation by reversed-phase high-performance liquid chromatography after derivatization with (−)-menthylchloroformate
D. T. Witte, J. Bosman, T. de Boer, B. Drenth +2 more
19918 citations
Semantic Scholar
Characterization of pulmonary and myocardial beta-adrenoceptors with S-1'-[fluorine-18]fluorocarazolol.
T. Visser, A. van Waarde, T. W. van der Mark, J. Kraan +9 more
1997Journal of Nuclear Medicine7 citations
Semantic Scholar

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