Liquid chromatographic determination and gas chromatographic-mass spectrometric confirmation of lasalocid sodium in bovine liver: interlaboratory study.
An analytical method has been developed that can reliably measure the metabolic marker residue of lasalocid. The method monitors this marker residue in food samples to ensure that the total residue of toxicological concern is not being exceeded. Interlaboratory studies of the liquid chromatographic determinative procedure and the gas chromatographic/mass spectrometric confirmatory procedure for lasalocid sodium at the 0.7 ppm level and higher were successful.
Newkirk
D R
DR
Food and Drug Administration, Center for Veterinary Medicine, Rockville, MD 20857.
Barnes
C J
CJ
D000818:Animals; D002417:Cattle; D002853:Chromatography, Liquid; D008401:Gas Chromatography-Mass Spectrometry; D007202:Indicators and Reagents; D007832:Lasalocid / Q000032:analysis*; D008099:Liver / Q000032:analysis*
D007202:Indicators and Reagents; D007832:Lasalocid