title: Determination of lasalocid in eggs using liquid chromatography-electrospray mass spectrometry.
abstract: A method is presented for the determination of the polyether ionophore, lasalocid, in eggs. Samples are extracted under acidic conditions using acetonitrile and the extracts are cleaned up using a simple liquid-liquid extraction step. Lasalocid is detected and quantified using liquid chromatography-electrospray mass spectrometry on a quadrupole bench-top instrument. The technique is highly sensitive, with a detection limit of about 0.5 ng g-1 of lasalocid in homogenized egg samples.
authors.affiliation: Department of Agriculture, Veterinary Sciences Division, Belfast, UK.
authors.forename: W J
authors.initials: WJ
authors.lastname: Blanchflower
authors.forename: D G
authors.initials: DG
authors.lastname: Kennedy
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004531:Eggs / Q000032:analysis*; D007832:Lasalocid / Q000032:analysis*; D013058:Mass Spectrometry
chemical_list: D007832:Lasalocid