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Screening and confirmation criteria for hormone residue analysis using liquid chromatography accurate mass time-of-flight, Fourier transform ion cyclotron resonance and orbitrap mass spectrometry techniques.
Nielen MW, van Engelen MC, Zuiderent R, Ramaker R. Nielen MW, et al. Anal Chim Acta. 2007 Mar 14;586(1-2):122-9. doi: 10.1016/j.aca.2006.08.055. Epub 2006 Sep 3. Anal Chim Acta. 2007. PMID: 17386703
Application of 1D 1H NMR for fast non-targeted screening and compositional analysis of steroid cocktails and veterinary drug formulations administered to livestock.
Lommen A, Schilt R, Weseman J, Roos AH, van Velde JW, Nielen MW. Lommen A, et al. J Pharm Biomed Anal. 2002 Apr 1;28(1):87-96. doi: 10.1016/s0731-7085(01)00613-6. J Pharm Biomed Anal. 2002. PMID: 11861112
Identification of an unknown beta-agonist in feed by liquid chromatography/bioassay/quadrupole time-of-flight tandem mass spectrometry with accurate mass measurement.
Nielen MW, Elliott CT, Boyd SA, Courtheyn D, Essers ML, Hooijerink HH, van Bennekom EO, Fuchs RE. Nielen MW, et al. Rapid Commun Mass Spectrom. 2003;17(14):1633-41. doi: 10.1002/rcm.1099. Rapid Commun Mass Spectrom. 2003. PMID: 12845590
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.
Nielen MW, Rutgers P, van Bennekom EO, Lasaroms JJ, van Rhijn JA. Nielen MW, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2004 Mar 5;801(2):273-83. doi: 10.1016/j.jchromb.2003.11.026. J Chromatogr B Analyt Technol Biomed Life Sci. 2004. PMID: 14751796
Bioassay-directed identification of estrogen residues in urine by liquid chromatography electrospray quadrupole time-of-flight mass spectrometry.
Nielen MW, van Bennekom EO, Heskamp HH, van Rhijn JH, Bovee TF, Hoogenboom LR. Nielen MW, et al. Anal Chem. 2004 Nov 15;76(22):6600-8. doi: 10.1021/ac0490705. Anal Chem. 2004. PMID: 15538783
Uptake and metabolism of enterolactone and enterodiol by human colon epithelial cells.
Jansen GH, Arts IC, Nielen MW, Müller M, Hollman PC, Keijer J. Jansen GH, et al. Arch Biochem Biophys. 2005 Mar 1;435(1):74-82. doi: 10.1016/j.abb.2004.12.015. Arch Biochem Biophys. 2005. PMID: 15680909
Multi residue screening of intact testosterone esters and boldenone undecylenate in bovine hair using liquid chromatography electrospray tandem mass spectrometry.
Nielen MW, Lasaroms JJ, Mulder PP, Van Hende J, van Rhijn JH, Groot MJ. Nielen MW, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2006 Jan 2;830(1):126-34. doi: 10.1016/j.jchromb.2005.10.028. Epub 2005 Nov 21. J Chromatogr B Analyt Technol Biomed Life Sci. 2006. PMID: 16301005
Urine testing for designer steroids by liquid chromatography with androgen bioassay detection and electrospray quadrupole time-of-flight mass spectrometry identification.
Nielen MW, Bovee TF, van Engelen MC, Rutgers P, Hamers AR, van Rhijn JH, Hoogenboom LR. Nielen MW, et al. Anal Chem. 2006 Jan 15;78(2):424-31. doi: 10.1021/ac051317q. Anal Chem. 2006. PMID: 16408923
Screening for estrogen residues in calf urine: comparison of a validated yeast estrogen bioassay and gas chromatography-tandem mass spectrometry.
Nielen MW, Bovee TF, Heskamp HH, Lasaroms JJ, Sanders MB, Van Rhijn JA, Groot MJ, Hoogenboom LA. Nielen MW, et al. Food Addit Contam. 2006 Nov;23(11):1123-31. doi: 10.1080/02652030600743797. Food Addit Contam. 2006. PMID: 17071514
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