P.W. Zoontjes

Effective monitoring of residues of nortestosterone and its major metabolite in bovine urine and bile

Leendert A. van Ginkel, R.W. Stephany, H.J. van Rossum et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1989 · 57 citations

Life Sciences, Pharmacokinetics, Veterinary Pharmacology +16

Potential of Recent Ambient Ionization Techniques for Future Food Contaminant Analysis Using (Trans)Portable Mass Spectrometry

Marco Blokland, Arjen Gerssen, P.W. Zoontjes et al. · Food Analytical Methods · 2019 · 44 citations · Full text

Pharmacy, Food Science, Toxicology +17

Assay for trenbolone and its metabolite 17α-trenbolone in bovine urine based on immunoaffinity chromatographic clean-up and off-line high-performance liquid chromatography-thin-layer chromatography

Leendert A. van Ginkel, H. van Blitterswijk, P.W. Zoontjes et al. · Journal of Chromatography A · 1988 · 41 citations

Pharmacy, Toxicology, Veterinary Toxicology +13

Multiple heart-cutting two dimensional liquid chromatography quadrupole time-of-flight mass spectrometry of pyrrolizidine alkaloids

Milou G.M. van de Schans, Marco Blokland, P.W. Zoontjes et al. · Journal of Chromatography A · 2017 · 39 citations · Full text

Pharmacy, Pharmacology, Toxicology +17

Multi-residue screening of a minimum package of anabolic steroids in urine with GC–MS

P.R. Kootstra, P.W. Zoontjes, E.F. van Tricht et al. · Analytica Chimica Acta · 2006 · 30 citations

Life Sciences, Pharmaceutical Analysis, Drug Metabolism +14