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Johan Lasaroms

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Publications

TOP 3
Maria J Groot; Johan J P Lasaroms; Johan Van Hende; M W F Nielen
Veterinary treatment of cows with isoxsuprine for a caesarian section may temporarily lead to residues in hair of both cow and calf.
Maria J Groot; Johan J P Lasaroms; T Meijer; Eric O van Bennekom; Jan Dirk van der Klis; E Vinyeta; Michel W F Nielen
Illegal treatment of barrows with nandrolone ester: effect on growth, histology and residue levels in urine and hair.
P Aqai; A A M Stolker; Johan J P Lasaroms
Effect of sample pre-treatment on the determination of steroid esters in hair of bovine calves.

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All Publications

2012: Maria J Groot; Johan J P Lasaroms; Johan Van Hende; M W F Nielen
Veterinary treatment of cows with isoxsuprine for a caesarian section may temporarily lead to residues in hair of both cow and calf.
Drug testing and analysis 2012;4(6):515-8.
2012: Maria J Groot; Johan J P Lasaroms; T Meijer; Eric O van Bennekom; Jan Dirk van der Klis; E Vinyeta; Michel W F Nielen
Illegal treatment of barrows with nandrolone ester: effect on growth, histology and residue levels in urine and hair.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment 2012;29(5):727-35.
2009: P Aqai; A A M Stolker; Johan J P Lasaroms
Effect of sample pre-treatment on the determination of steroid esters in hair of bovine calves.
Journal of chromatography. A 2009;1216(46):8233-9.
2009: A A M Stolker; Maria J Groot; Johan J P Lasaroms; A W J M Nijrolder; M H Blokland; I Riedmaier; C Becker; H H D Meyer; Michel W F Nielen
Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment.
Analytical and bioanalytical chemistry 2009;395(4):1075-87.
2009: Toine F H Bovee; Gerrit Bor; Henri H Heskamp; Johan J P Lasaroms; Marieke B Sanders; Michel W F Nielen
Validation and application of a yeast bioassay for screening androgenic activity in calf urine and feed.
Analytica chimica acta 2009;637(1-2):225-34.
2008: A A M Stolker; P Rutgers; E Oosterink; Johan J P Lasaroms; R J B Peters; J A van Rhijn; Michel W F Nielen
Comprehensive screening and quantification of veterinary drugs in milk using UPLC-ToF-MS.
Analytical and bioanalytical chemistry 2008;391(6):2309-22.
2008: Michel W F Nielen; Johan J P Lasaroms; M L Essers; J E Oosterink; T Meijer; M B Sanders; T Zuidema; A A M Stolker
Multiresidue analysis of beta-agonists in bovine and porcine urine, feed and hair using liquid chromatography electrospray ionisation tandem mass spectrometry.
Analytical and bioanalytical chemistry 2008;391(1):199-210.
2007: Michel W F Nielen; Johan J P Lasaroms; Martien L Essers; Marieke B Sanders; Henri H Heskamp; Toine F H Bovee; J Hans A van Rhijn; Maria J Groot
The ultimate veal calf reference experiment: hormone residue analysis data obtained by gas and liquid chromatography tandem mass spectrometry.
Analytica chimica acta 2007;586(1-2):30-4.
2006: Alida Melse-Boonstra; Petra Verhoef; Clive E West; Johannes A van Rhijn; Richard B Van Breemen; Johan J P Lasaroms; Spiros D Garbis; Martijn B Katan; Frans J Kok
A dual-isotope-labeling method of studying the bioavailability of hexaglutamyl folic acid relative to that of monoglutamyl folic acid in humans by using multiple orally administered low doses.
The American journal of clinical nutrition 2006;84(5):1128-33.
2006: T Zuidema; Patrick P J Mulder; Johan J P Lasaroms; S Stappers; Johannes A van Rhijn
Can high-performance liquid chromatography coupled with fluorescence detection under all conditions be regarded as a sufficiently conclusive confirmatory method for B-group substances?
Food additives and contaminants 2006;23(11):1149-56.
2006: Michel W F Nielen; Toine F H Bovee; Henri H Heskamp; Johan J P Lasaroms; M B Sanders; Johannes A van Rhijn; Maria J Groot; L A P Hoogenboom
Screening for estrogen residues in calf urine: comparison of a validated yeast estrogen bioassay and gas chromatography-tandem mass spectrometry.
Food additives and contaminants 2006;23(11):1123-31.
2006: Michel W F Nielen; Johan J P Lasaroms; Patrick P J Mulder; Johan Van Hende; J Hans A van Rhijn; Maria J Groot
Multi residue screening of intact testosterone esters and boldenone undecylenate in bovine hair using liquid chromatography electrospray tandem mass spectrometry.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006;830(1):126-34.
2004: Ivon E J Milder; Ilja C W Arts; Dini P Venema; Johan J P Lasaroms; Kristina Wähälä; Peter C H Hollman
Optimization of a liquid chromatography-tandem mass spectrometry method for quantification of the plant lignans secoisolariciresinol, matairesinol, lariciresinol, and pinoresinol in foods.
Journal of agricultural and food chemistry 2004;52(15):4643-51.
2004: Michel W F Nielen; Paula Rutgers; Eric O van Bennekom; Johan J P Lasaroms; Johannes A van Rhijn
Confirmatory analysis of 17beta-boldenone, 17alpha-boldenone and androsta-1,4-diene-3,17-dione in bovine urine, faeces, feed and skin swab samples by liquid chromatography-electrospray ionisation tandem mass spectrometry.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2004;801(2):273-83.
2002: Johannes A van Rhijn; Johan J P Lasaroms; B J A Berendsen; Udo A Th Brinkman
Liquid chromatographic-tandem mass spectrometric determination of selected sulphonamides in milk.
Journal of chromatography. A 2002;960(1-2):121-33.
2001: C A Hajee; H J van Rhijn; Johan J P Lasaroms; Henk Keukens; J de Jong
Development and validation of a method for the determination of sub-additive levels of virginiamycin in compound animal feeds by liquid chromatography.
The Analyst 2001;126(8):1332-8.