DIBUTYLBARBITURIC ACID AS AN IMPURITY IN BUTOBARBITAL TABLETSDEZEEUW RA; WIJSBEEK J.1973; PHARM. WEEKBL.; NETHERL.; DA. 1973; VOL. 108; NO 4; PP. 69-73; BIBL. 6REF.Serial Issue

ISOLATION AND DETERMINATION OF QUARTENARY AMMONIUM COMPOUNDS BY MEANS OF AMBERLITE XAD COLUMNS AND THIN LAYER CHROMATOGRAPHYFRANKE JP; WIJSBEEK J; GREVING JE et al.1979; ARCH. TOXICOL.; DEU; DA. 1979; VOL. 42; NO 2; PP. 115-121; BIBL. 11 REF.Article

BIOAVAILABILITY OF THE QUATERNARY AMMONIUM COMPOUND THIAZINAMIUM METHYLSULPHATE (MULTERGAN) AFTER ORAL AND INTRAMUSCULAR ADMINISTRATION = LA BIODISPONIBILITE DU COMPOSE AMMONIUM QUATERNAIRE THIAZINAMIUM METHYLSULFATE (MULTERGAN) APRES ADMINISTRATION PER OS ET INTRAMUSCULAIREJONKMAN JHG; WIJSBEEK J; BROUWER SH et al.1974; J. PHARM. PHARMACOL., SUPPL.; G.B.; DA. 1974; VOL. 26; PP. 63; BIBL. 7REF.; (BR. PHARM. CONF. 111TH MEET. SCI. PAP. COMMUN.; NOTTINGHAM; 1974)Conference Paper

COMPOSITION OF PHOSPHOLIPIDS IN PLASMODIUM KNOWLESI MEMBRANES AND IN HOST RHESUS ERYTHROCYTE MEMBRANESDE ZEEUW RA; WIJSBEEK J; ROCK RC et al.1972; PROC. HELMINTHOL. SOC. WASHINGTON; U.S.A.; DA. 1972; VOL. 39; PP. 412-418; BIBL. 11REF.Serial Issue

VARIATIONS IN THE BIOAVAILABILITY OF THIAZINAMIUM METHYLSULFATE.JONKMAN JHG; VAN BORK LE; WIJSBEEK J et al.1977; CLIN. PHARMACOL. THERAPEUT.; U.S.A.; DA. 1977; VOL. 21; NO 4; PP. 457-463; BIBL. 1 P. 1/2Article

DETERMINATION OF THIAZINAMIUM SULPHOXIDE IN URINE BY MEANS OF AMBERLITE XAD-2 COLUMN CHROMATOGRAPHY AND THIN-LAYER DENSITOMETRY.JONKMAN JHG; WIJSBEEK J; GRAVING JE et al.1976; J. CHROMATOGR.; NETHERL.; DA. 1976; VOL. 128; NO 1; PP. 208-211; BIBL. 18 REF.Article

Potentials of wide-bore fused silica capillary columns for substance identification by means of retention indicesFRANKE, J. P; DE ZEEUW, R. A; WIJSBEEK, J et al.Journal of analytical toxicology. 1986, Vol 10, Num 4, pp 132-134, issn 0146-4760Article

FIRST-PASS EFFECT AFTER RECTAL ADMINISTRATION OF THIAZINAMIUM METHYLSULFATEJONKMAN JHG; VAN BORK LE; WIJSBEEK J et al.1979; J. PHARM. SCI.; USA; DA. 1979; VOL. 68; NO 1; PP. 69-72; BIBL. 19 REF.Article

"FIRST PASS EFFECT" AFTER RECTAL ADMINISTRATION OF THIAZINAMIUM METHYLSULPHATE.JONKMAN JHG; VAN BORCK LE; WIJSBEEK J et al.1976; J. PHARM. PHARMACOL.; G.B.; DA. 1976; VOL. 28; SUPPL.; PP. 56; BIBL. 2 REF.; (BR. PHARM. CONF. 1976. MEET. 113; ST. ANDREWS; 1976)Conference Paper

SPEC® disc solid-phase extraction for rapid broad-spectrum drug screening in urineDE ZEEUW, R. A; WIJSBEEK, J; FRANKE, J. P et al.Journal of analytical toxicology. 2000, Vol 24, Num 2, pp 97-101, issn 0146-4760Article

Influence of biological matrix on retention behaviour and identification possibilities of selected neutral and acidic drugs in thin layer chromatography: an interlaboratory investigationBOGUSZ, M; FRANKE, J. P; WIJSBEEK, J et al.Journal of analytical toxicology. 1986, Vol 10, Num 6, pp 245-249, issn 0146-4760Article

Semi-automated solid-phase extraction procedure for drug screening in biological fluids using the ASPEC system in combination with Clean Screen DAU columnsXIAO-HUA CHEN; FRANKE, J.-P; ENSING, K et al.Journal of chromatography. Biomedical applications. 1993, Vol 613, Num 2, pp 289-294, issn 0378-4347Article

Reusability of Bond Elut Certify columns for the extraction of drugs from plasmaXIAO-HUA CHEN; FRANKE, J.-P; WIJSBEEK, J et al.Journal of chromatography. Biomedical applications. 1993, Vol 619, Num 1, pp 137-142, issn 0378-4347Article

Determination of basic drugs extracted from biological matrices by means of solid-phase extraction and wide-bore capillary gas chromatography with nitrogen-phosphorus detectionXIAO-HUA CHEN; FRANKE, J.-P; WIJSBEEK, J et al.Journal of analytical toxicology. 1994, Vol 18, Num 3, pp 150-153, issn 0146-4760Article

Systematic analysis of solvents and other volatile substances by gas chromatographyFRANKE, J. P; WIJSBEEK, J; DE ZEEUW, R. A et al.Journal of analytical toxicology. 1988, Vol 12, Num 1, pp 20-24, issn 0146-4760Article

Impact of biological matrix, drug concentration, and method of isolation on detectability and variability of retention index values in gas chromatographyBOGUSZ, M; WIJSBEEK, J; FRANKE, J. P et al.Journal of analytical toxicology. 1985, Vol 9, Num 2, pp 49-54, issn 0146-4760Article

An enzymic digestion and solid-phase extraction procedure for the screening for acidic, neutral, and basic drugs in liver using gas chromatography for analysisHUANG, Z.-P; CHEN, X.-H; WIJSBEEK, J et al.Journal of analytical toxicology. 1996, Vol 20, Num 4, pp 248-254, issn 0146-4760Article

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 bloodXIAO-HUA CHEN; FRANKE, J.-P; WIJSBEEK, J et al.Journal of chromatography. Biomedical applications. 1993, Vol 617, Num 1, pp 147-151, issn 0378-4347Article

Interlaboratory applicability of a retention index library of drugs for screening by reversed phase HPLC in systematic toxicological analysisBOGUSZ, M; ERKENS, M; FRANKE, J. P et al.Journal of liquid chromatography. 1993, Vol 16, Num 6, pp 1341-1354, issn 0148-3919Article

Impact of biological matrix and isolation methods on detectability and interlaboratory variations of TLC Rf-values in systematic toxicological analysisBOGUSZ, M; KLYS, M; WIJSBEEK, J et al.Journal of analytical toxicology. 1984, Vol 8, Num 4, pp 149-154, issn 0146-4760Article

Untersuchung pflanzlicher Drogen auf Rückstände von Organochlorverbindungen. III: Identifizierung von Rückständen polychlorierter Biphenyle durch Vergleich von Gaschromatographie an gepackter und Kapillarsäule sowie GC/MS-Kopplung = Etude des résidus d'organochlorés dans les plantes médicinales. III: Identification des résidus de biphényles polychlorés par chromatographie en phase gazeuse en colonne compacte et capillaire et par CG/SM = Investigation of residues of organochlorine compounds in vegetable drugs. III: Identification of residues of polychlorinated biphenyls by gas chromatography on packed and capillary columns and by GC/MSBENECKE, R; BROTKA, J; WIJSBEEK, J et al.Pharmazie. 1988, Vol 43, Num 2, pp 123-125, issn 0031-7144Article

Clinical pharmacokinetics of intramuscular thiazinamium methyl sulfateJONKMAN, J. H. G; VAN BORK, L. E; CALVERT, B et al.International journal of clinical pharmacology, therapy and toxicology (1980). 1983, Vol 21, Num 9, pp 454-459, issn 0174-4879Article