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1

Recent innovations in the use of charged cyclodextrins in capillary electrophoresis for chiral separations in pharmaceutical analysis

Theo de Boer, Rokus A. de Zeeuw, Gerhardus J. de Jong, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

2000

Language:

english

File:

PDF, 309 KB

english, 2000

2

Chiral derivatization of promethazine with (−)-menthyl chloroformate for enantiomeric separation by RP-HPLC

Dirk T. Witte, Rokus A. de Zeeuw, Ben F. H. Drenth

Journal:

Journal of Separation Science

Year:

1990

Language:

english

File:

PDF, 254 KB

english, 1990

3

Reproducibility of RF values in unsaturated chambers and related development techniques

Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1968

Language:

english

File:

PDF, 1.05 MB

english, 1968

4

Solid-phase extraction procedures in systematic toxicological analysis

Jan Piet Franke, Rokus A de Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1998

Language:

english

File:

PDF, 97 KB

english, 1998

5

Impact of substituents on the enantioseparation of racemic 2-amidotetralins on polysaccharide stationary phases. I. chiralcel OD

Ulrike Selditz, Swier Copinga, Jan Piet Franke, Håkan Wikström, Rokus A. De Zeeuw

Journal:

Year:

1996

Language:

english

File:

PDF, 514 KB

english, 1996

6

Selectivity in capillary electrokinetic separations

Theo de Boer, Rokus A. de Zeeuw, Gerhardus J. de Jong, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

1999

Language:

english

File:

PDF, 562 KB

english, 1999

7

Intra- and interinstrument reproducibility of migration parameters in capillary electrophoresis for substance identification in systematic toxicological analysis

Carolien M. Boone, Jan-Piet Franke, Rokus A. de Zeeuw, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

2000

Language:

english

File:

PDF, 82 KB

english, 2000

8

Enantioseparation of ofloxacin in urine by capillary electrokinetic chromatography using charged cyclodextrins as chiral selectors and assessment of enantioconversion

Theo de Boer, Roelof Mol, Rokus A. de Zeeuw, Gerhardus J. de Jong, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

2001

Language:

english

File:

PDF, 107 KB

english, 2001

9

Interlaboratory reproducibility of mobility parameters in capillary electrophoresis for substance identification in systematic toxicological analysis

Carolien M. Boone, Giulia Manetto, Franco Tagliaro, Joop C. M. Waterval, Willy J. M. Underberg, Jan-Piet Franke, Rokus A. de Zeeuw, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

2002

Language:

english

File:

PDF, 388 KB

english, 2002

10

Spherical molecularly imprinted polymer particles: A promising tool for molecular recognition in capillary electrokinetic separations

Theo de Boer, Roelof Mol, Rokus A. de Zeeuw, Gerhardus J. de Jong, David C. Sherrington, Peter A. G. Cormack, Kees Ensing

Journal:

ELECTROPHORESIS

Year:

2002

Language:

english

File:

PDF, 130 KB

english, 2002

11

Determination of the enantiomeric purity of (−−) 2-(N-propyl-n-2-thienylethylamino)-5-hydroxytetralin (n-0923) by chiral stationary phase HPLC

Dirk T. Witte, Jan-Piet Franke, Pieter J. Swart, Rokus A. De Zeeuw

Journal:

Year:

1992

Language:

english

File:

PDF, 250 KB

english, 1992

12

The influence of solute structure, temperature, and eluent composition on the chiral separation of 21 aminotetralins on a cellulose tris-3,5-dimethylcarbamate stationary phase in high-performance liquid chromatography

Dirk T. Witte, Jan-Piet Franke, Frank J. Bruggeman, Durk Dijkstra, Rokus A. De Zeeuw

Journal:

Year:

1992

Language:

english

File:

PDF, 565 KB

english, 1992

13

Comparison between cellulose and amylose tris(3,5-dimethylphenylcarbamate) chiral stationary phases for enantiomeric separation of 17 amidotetralins

Dr. Dirk T. Witte, Frank J. Bruggeman, Jan Piet Franke, Swier Copinga, Johanna M. Jansen, Rokus A. De Zeeuw

Journal:

Year:

1993

Language:

english

File:

PDF, 704 KB

english, 1993

14

Concentration-dependent behavior of drugs in capillary gas chromatography using splitless injection

Maciej Bogusz, Jaap Wijsbeek, Jan Piet Franke, Rokus A. de Zeeuw

Journal:

Journal of Separation Science

Year:

1983

Language:

english

File:

PDF, 221 KB

english, 1983

15

Percutaneous absorption, metabolic profiling, and excretion of the penetration enhancer azone after multiple dosing of an azone-containing triamcinolone acetonide cream in humans

Johann W. Wiechers, Ben F. H. Drenth, Jan H. G. Jonkman, Rokus A. De Zeeuw

Journal:

Journal of Pharmaceutical Sciences

Year:

1990

Language:

english

File:

PDF, 634 KB

english, 1990

16

Ultra-rapid non-equilibrium solid-phase microextraction at elevated temperatures and direct coupling to mass spectrometry for the analysis of lidocaine in urine

Mischa W. J. van Hout, Vincent Jas, Harm A. G. Niederländer, Rokus A. de Zeeuw, Gerhardus J. de Jong

Journal:

Journal of Separation Science

Year:

2003

Language:

english

File:

PDF, 288 KB

english, 2003

17

Plasticizers as contaminants in high-purity solvents: A potential source of interference in biological analysis

Rokus A. de Zeeuw, Jan H.G. Jonkman, Franc J.W. van Mansvelt

Journal:

Analytical Biochemistry

Year:

1975

Language:

english

File:

PDF, 166 KB

english, 1975

18

Rapid analysis of simple carbohydrates by means of vapour-programmed thin-layer chromatography and densitometry and using a new spotting device

Rokus A. De Zeeuw, Gerald G. Dull

Journal:

Journal of Chromatography A

Year:

1975

Language:

english

File:

PDF, 570 KB

english, 1975

19

Optimization of the direct enantiomeric separation by high-performance liquid chromatography of the D-2 dopamine agonist N-0437 using response surface methodology and the multi-criteria decision-making method

Dirk T. Witte, Jan Bosman, Rokus A. De Zeeuw, Jan H. De Boer, Durk A. Doornbos

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 594 KB

english, 1991

20

Radioreceptor assay — a tool for the bioanalysis of drugs

Kees Ensing, Rokus A. de Zeeuw

Journal:

TrAC Trends in Analytical Chemistry

Year:

1984

Language:

english

File:

PDF, 988 KB

english, 1984

21

Recent developments in therapeutic drug monitoring and clinical toxicology: edited by I. Sunshine, Marcel Dekker, New York, Basel, Hong Kong, 1992, XII + 792 pp., price US$ 175.00 (USA and Canada), US$ 201.25 (other countries), ISBN 0-8247-8586-X

Rokus A. de Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1992

Language:

english

File:

PDF, 48 KB

english, 1992

22

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, Jan-Piet Franke, Kees Ensing, Jaap Wijsbeek, Rokus A. de Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1993

Language:

english

File:

PDF, 476 KB

english, 1993

23

Study of lot-to-lot reproducibilities of Bond Elut Certify and Clean Screen DAU mixed-mode solid-phase extraction columns in the extraction of drugs from whole blood

Xiao-Hua Chen, Jan-Piet Franke, Jaap Wijsbeek, Rokus A. de Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1993

Language:

english

File:

PDF, 392 KB

english, 1993

24

Reusability of Bond Elut Certify columns for the extraction of drugs from plasma

Xiao-Hua Chen, Jan-Piet Franke, Jaap Wijsbeek, Rokus A. de Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1993

Language:

english

File:

PDF, 475 KB

english, 1993

25

Chromatography in analytical toxicology — state of the art and future perspectives

Rokus A. De Zeeuw

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

1983

Language:

english

File:

PDF, 1.18 MB

english, 1983

26

Substance identification: the weak link in analytical toxicology

Rokus A. de Zeeuw

Journal:

Journal of Chromatography B

Year:

2004

Language:

english

File:

PDF, 163 KB

english, 2004

27

Rapid and sensitive liquid chromatographic determination of carbamazepine suitable for use in monitoring multiple-drug anticonvulsant therapy

Herman G.M. Westenberg, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1976

Language:

english

File:

PDF, 501 KB

english, 1976

28

Determination of carboxylic acids in the picomole range after derivatization with pentafluorobenzyl bromide and electron capture gas chromatography

Jan E. Greving, Jan H.G. Jonkman, Rokus A. de Zeeuw

Journal:

Journal of Chromatography A

Year:

1978

Language:

english

File:

PDF, 546 KB

english, 1978

29

Advances in Chromatography, Vol. 15 : Edited by J.C. Giddings, E. Grushka, J. Cazes and P.R. Brown, Marcel Dekker, New York, Basel, 1977 XV + 331 pp., price SFr. 98.00, ISBN 0-8247-6500-1.

Rokus A. de Zeeuw

Journal:

Journal of Chromatography A

Year:

1978

Language:

english

File:

PDF, 86 KB

english, 1978

30

Identification of Ergot-peptide alkaloids, based on gas—liquid chromatography of the peptide moiety

Franc.J.W. Van Manswelt, Jan E. Greving, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1978

Language:

english

File:

PDF, 526 KB

english, 1978

31

High-performance liquid chromatography in the elucidation of the metabolic fate of butoprozine : Screening for unknown metabolites in the rat

Ben F.H. Drenth, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1980

Language:

english

File:

PDF, 395 KB

english, 1980

32

Separation methods for drugs and related organic compounds, : by G. Schill, Apotekarsocieteten, Stockholm, 1st ed., 1978, VIII + 182 pp., price SKr. 75.00.

Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1979

Language:

english

File:

PDF, 113 KB

english, 1979

33

Assay of drugs and other trace compounds in biological fluids (Methodological Developments in Biochemistry, Vol. 5) : edited by E. Reid, North-Holland, Amsterdam, 1976, X + 254 pp., price Dfl. 65.00, US$ 26.75, ISBN 0-7204-0584-X.

Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1978

Language:

english

File:

PDF, 148 KB

english, 1978

34

Analysis of quaternary ammonium compounds and basic drugs based on ion-pair adsorption high-performance liquid chromatography

Jan E. Greving, Henk Bouman, Jan H.G. Jonkman, Herman G.M. Westenberg, Rokus A. de Zeeuw

Journal:

Journal of Chromatography A

Year:

1979

Language:

english

File:

PDF, 604 KB

english, 1979

35

Identification power of thin-layer chromatographic colour reactions and integration of colour codes in a database for computerized identification in systematic toxicological analysis

Rokus A. De Zeeuw, Dirk T. Witte, Jan-Piet Franke

Journal:

Journal of Chromatography A

Year:

1990

Language:

english

File:

PDF, 704 KB

english, 1990

36

Influence of humidity variations in the thin-layer chromatography of hypnotics

Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1968

Language:

english

File:

PDF, 1.50 MB

english, 1968

37

Ion-pair adsorption chromtography of basic drugs using straight-phase systems on silica gel thin layers

Rokus A. De Zeeuw, Franc J.W. van Mansvelt, Jan E. Greving

Journal:

Journal of Chromatography A

Year:

1978

Language:

english

File:

PDF, 645 KB

english, 1978

38

The use of vapour-programmed thin-layer chromatography in the separation and identification of sulphonamides

Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1970

Language:

english

File:

PDF, 1.85 MB

english, 1970

39

Reaction thin-layer chromatography of thiobarbiturates and barbiturates after bromination at the starting point

Rokus A. De Zeeuw, Jaap Wijsbeek

Journal:

Journal of Chromatography A

Year:

1970

Language:

english

File:

PDF, 253 KB

english, 1970

40

A study of the separation of enantiomers of some aromatic carboxylic acids by high-performance liquid chromatography on a β-cyclodextrin-bonded stationary phase

Karla G. Feitsma, Jan Bosman, Ben F.H. Drenth, Rokus A. de Zeeuw

Journal:

Journal of Chromatography A

Year:

1985

Language:

english

File:

PDF, 581 KB

english, 1985

41

Influence of chemical structure of tricyclic tertiary dimethylamines on chiral separation by reversed-phase high-performance liquid chromatography after derivatization with (−)-menthylchloroformate

Dirk T. Witte, Jan Bosman, Theo De Boer, Ben F.H. Drenth, Kees Ensing, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 491 KB

english, 1991

42

Diurnal changes in plasma levels of 2-pyrrolidinone determined by isotope dilution mass spectrometry

Gita A. Van Den Berg, Bert G. Wolthers, Gijs T. Nagel, Frits A.J. Muskiet, Sharon Banghman, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 470 KB

english, 1991

43

Determination of oxyphenonium bromide in plasma and urine by means of ion-pair extraction, derivatization and gas chromatography-electron-capture detection

Jan E. Greving, Jan H.G. Jonkman, Fenny Fiks, Rokus A. De Zeeuw, L.E. Van Bork, N.G.M. Orie

Journal:

Journal of Chromatography A

Year:

1977

Language:

english

File:

PDF, 617 KB

english, 1977

44

Comparison of two β-cyclodextrin bonded stationary phases for high-performance liquid chromatography : Elution order and optical purity of enantiomers of cyclohexylphenylglycolic acid

Karla G. Feitsma, Ben F.H. Drenth, Rokus A. De Zeeuw

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 417 KB

english, 1987

45

Size-exclusion chromatographic reconstitution of the bovine brain benzodiazepine receptor: Effects of lipid environment on the binding characteristics

Gerhard T Viel, Qing Yang, Per Lundahl, Kees Ensing, Rokus A de Zeeuw

Journal:

Journal of Chromatography A

Year:

1997

Language:

english

File:

PDF, 278 KB

english, 1997

46

Direct enantiomeric separation of mianserin and 6-azamianserin derivatives using chiral stationary phases

Ulrike Selditz, Yi Liao, Jan Piet Franke, Rokus A de Zeeuw, Håkan Wikström

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 141 KB

english, 1998

47

Evaluation of capillary electrophoretic techniques towards systematic toxicological analysis

Carolien M Boone, Jan-Piet Franke, Rokus A de Zeeuw, Kees Ensing

Journal:

Journal of Chromatography A

Year:

1999

Language:

english

File:

PDF, 205 KB

english, 1999

48

Modern chromatographic procedures in systematic toxicological analysis

Rokus A. De Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1989

Language:

english

File:

PDF, 1.01 MB

english, 1989

49

Mass spectral and GC data of drugs, poisons and their metabolites : Parts I and II, by K. Pfleger, H. Maurer and A. Weber, VCH, Weinheim, Deerfield Beach, FL, 1985, XXX + 208 pp. (Part I), XI + 744 pp. (Part II), price: DM 480.00, US$ 212.50, ISBN 3-527-26303-9 (F.R.G.), 0-89573-430-3 (U.S.A.)

Rokus A. De Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1986

Language:

english

File:

PDF, 156 KB

english, 1986

50

Analytical aspects of drug testing (Chemical Analysis Series, Vol. 100) : Edited by Dale G. Deutsch, Wiley, New York, Chichester, Brisbane, Toronto, Singapore, 1989, XVI+304 pp., price £58.50, ISBN 0-471-85309-7

Rokus A. De Zeeuw

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1990

Language:

english

File:

PDF, 231 KB

english, 1990

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