Confirmatory analysis of 17β-boldenone, 17α-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

@inproceedings{Nielen2004ConfirmatoryAO,
  title={Confirmatory analysis of 17β-boldenone, 17α-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},
  author={Michel W F Nielen and Paula Rutgers and Eric O.van Bennekom and J.J.P. Lasaroms and J. A. van Rhijn},
  year={2004}
}
Abstract The origin, i.e. natural occurrence or illegal treatment, of findings of 17α-boldenone (α-Bol) and 17β-boldenone (β-Bol) in urine and faeces of cattle is under debate within the European Union. A liquid chromatographic positive ion electrospray tandem mass spectrometric method is presented for the confirmatory analysis of 17β-boldenone, 17α-boldenone and an important metabolite/precursor androsta-1,4-diene-3,17-dione (ADD), using deuterium-labelled 17β-boldenone (β-Bol-d3) as internal… CONTINUE READING

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