| Effective monitoring of residues of nortestosterone and its major metabolite in bovine urine and bile LA Van Ginkel, RW Stephany, HJ Van Rossum, H Van Blitterswijk, ... Journal of Chromatography B: Biomedical Sciences and Applications 489 (1 …, 1989 | 77 | 1989 |
| The use of supercritical fluid extraction for the determination of steroids in animal tissues AAM Stolker, PW Zoontjes, LA van Ginkel Analyst 123 (12), 2671-2676, 1998 | 72 | 1998 |
| 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 … LA Van Ginkel, H Van Blitterswijk, PW Zoontjes, D Van Den Bosch, ... Journal of Chromatography A 445, 385-392, 1988 | 48 | 1988 |
| Determination of acetyl gestagenic steroids in kidney fat by automated supercritical fluid extraction and liquid chromatography ion-trap mass spectrometry AAM Stolker, PW Zoontjes, PLWJ Schwillens, PR Kootstra, LA van Ginkel, ... Analyst 127 (6), 748-754, 2002 | 47 | 2002 |
| Development and validation of a gas chromatographic—mass spectrometric procedure for the identification and quantification of residues of chloramphenicol LA Van Ginkel, HJ Van Rossum, PW Zoontjes, H Van Blitterswijk, G Ellen, ... Analytica chimica acta 237, 61-69, 1990 | 43 | 1990 |
| Multi-residue screening of a minimum package of anabolic steroids in urine with GC–MS PR Kootstra, PW Zoontjes, EF Van Tricht, SS Sterk Analytica chimica acta 586 (1-2), 82-92, 2007 | 40 | 2007 |
| Potential of recent ambient ionization techniques for future food contaminant analysis using (trans) portable mass spectrometry MH Blokland, A Gerssen, PW Zoontjes, J Pawliszyn, MWF Nielen Food Analytical Methods 13, 706-717, 2020 | 39 | 2020 |
| Multiple heart-cutting two dimensional liquid chromatography quadrupole time-of-flight mass spectrometry of pyrrolizidine alkaloids MGM van de Schans, MH Blokland, PW Zoontjes, PPJ Mulder, ... Journal of Chromatography A 1503, 38-48, 2017 | 33 | 2017 |
| Liquid chromatographic purification and detection of anabolic compounds LA Van Ginkel, E Jansen, RW Stephany, PW Zoontjes, P Schwillens, ... Journal of Chromatography A 624 (1-2), 389-401, 1992 | 30 | 1992 |
| Confirmatory analysis of Trenbolone using accurate mass measurement with LC/TOF-MS MH Blokland, PW Zoontjes, SS Sterk, RW Stephany, J Zweigenbaum, ... Analytica chimica acta 618 (1), 86-93, 2008 | 21 | 2008 |
| The presence of nortestosterone in edible parts from non-castrated male pigs LA Van Ginkel, RW Stephany, PW Zoontjes, HJ Van Rossum, ... Tijdschrift voor Diergeneeskunde 114 (6), 311-314, 1989 | 21 | 1989 |
| Multiclass screening in urine by comprehensive two-dimensional liquid chromatography time of flight mass spectrometry for residues of sulphonamides, beta-agonists and steroids MH Blokland, PW Zoontjes, LA Van Ginkel, MGM Van De Schans, ... Food Additives & Contaminants: Part A 35 (9), 1703-1715, 2018 | 19 | 2018 |
| Fast high-performance liquid chromatographic screening method for the presence of trenbolone and its major metabolite in urine of slaughter cattle E Jansen, PW Zoontjes, H Van Blitterswijk, R Both-Miedema, ... Journal of Chromatography A 319, 436-439, 1985 | 19 | 1985 |
| Selectivity of a diol phase high-performance liquid chromatographic system in trace analysis of anabolic compounds EHJM Jansen, H Van Blitterswijk, PW Zoontjes, R Both-Miedema, ... Journal of Chromatography A 347, 375-378, 1985 | 18 | 1985 |
| Rapid method for the determination of stanozolol in meat with supercritical fluid extraction and liquid chromatography–mass spectrometry AAM Stolker, EF Van Tricht, PW Zoontjes, LA Van Ginkel, RW Stephany Analytica chimica acta 483 (1-2), 1-9, 2003 | 17 | 2003 |
| Investigation of the presence of prednisolone in bovine urine E de Rijke, PW Zoontjes, D Samson, S Oostra, SS Sterk, LA van Ginkel Food Additives & Contaminants: Part A 31 (4), 605-613, 2014 | 16 | 2014 |
| Screening of parts-per-billion levels of diethylstilbestrol in bovine urine by high-performance liquid chromatography with ultraviolet detection E Jansen, PW Zoontjes, R Both-Miedema, H Van Blitterswijk, ... Journal of Chromatography A 347, 379-383, 1985 | 14 | 1985 |
| Supercritical fluid extraction of residues of veterinary drugs and growth-promoting agents from food and biological matrices AAM Stolker, MAS Marques, PW Zoontjes, LA Van Ginkel, RJ Maxwell Sem Food Anal 1, 117-132, 1996 | 9 | 1996 |
| Perspectives in residue analysis; the use of immobilized antibodies in (multi) residue analysis LA Van Ginkel, RW Stephany, HJ Van Rossum, PW Zoontjes TrAC Trends in Analytical Chemistry 11 (8), 294-298, 1992 | 9 | 1992 |
| Simplified screening approach of anabolic steroid esters using a compact atmospheric solid analysis probe mass spectrometric system A Arrizabalaga-Larrañaga, PW Zoontjes, JJP Lasaroms, MWF Nielen, ... Analytical and Bioanalytical Chemistry 414 (11), 3459-3470, 2022 | 6 | 2022 |
