Jaap Wijsbeek

Isolation of Acidic, Neutral, and Basic Drugs from Whole Blood Using A Single Mixed-Mode Solid-Phase Extraction Column

Xiaohua Chen, Jan‐Piet Franke, Jaap Wijsbeek et al. · Journal of Analytical Toxicology · 1992 · 99 citations

Engineering, Whole Blood, Biomedical Engineering +20

A Single-Column Procedure on Bond Elut Certify for Systematic Toxicological Analysis of Drugs in Plasma and Urine

X-H Chen, Jaap Wijsbeek, Jan Piet Franke et al. · Journal of Forensic Sciences · 1992 · 78 citations

Systematic Toxicological Analysis, Medicinal Chemistry, Bond Elut Certify +25

Solid-phase extraction for the screening of acidic, neutral and basic drugs in plasma using a single-column procedure on Bond Elut Certify

Xiaohua Chen, Jaap Wijsbeek, Jan Van Veen et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1990 · 54 citations

Solvent Extraction, Solid-phase Extraction, Chemistry +16

Pitfalls and Solutions in the Development of a Fully Automated Solid-Phase Extraction Method for Drug Screening Purposes in Plasma and Whole Blood

Xiaohua Chen, Jan‐Piet Franke, Kees Ensing et al. · Journal of Analytical Toxicology · 1993 · 40 citations

Engineering, Whole Blood, Biomedical Engineering +20

Cannabinoids with a Propyl Side Chain in Cannabis: Occurrence and Chromatographic Behavior

Dick de Zeeuw, Jaap Wijsbeek, D. D. Breimer et al. · Science · 1972 · 39 citations · Full text

Cannabis Use, Substance Abuse, Drug Analysis +14