title: Liquid chromatographic tandem mass spectrometric determination of five coccidiostats in poultry eggs and feed.
abstract: A method is described which permits the quantitative detection of the chemical coccidiostats halofuginone, robenidine, diclazuril, nicarbazin and dimetridazole and its main metabolite 2-hydroxydimetridazole in poultry eggs and feed. Sample preparations were kept very simple and are based upon extraction with an organic solvent. Sample extracts were injected into the liquid chromatography tandem mass spectrometry (LC-MS/MS) system on a C18 column and a gradient elution was performed. Dimetridazole-D3 and diclazuril-bis, a structural analogue of diclazuril, were used as internal standards. Detection was performed on a triple quadrupole mass spectrometer in the selected reaction monitoring mode after ionisation in the positive or negative electrospray ionisation mode. Argon was applied as collision gas for collision induced dissociation. Validation of the methods was performed based on Commission Decision 2002/657/EC [Official Journal of the European Communities L221 (2002) 8].
authors.affiliation: Ministry of the Flemish Community, Agricultural Research Centre Ghent (CLO), Department of Animal Product Quality and Transformation Technology (DVK), Brusselsesteenweg 370, 9090 Melle, Belgium. L.Mortier@clo.fgov.be
authors.forename: Leen
authors.initials: L
authors.lastname: Mortier
authors.forename: Els
authors.initials: E
authors.lastname: Daeseleire
authors.forename: Carlos
authors.initials: C
authors.lastname: Van Peteghem
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D003049:Coccidiostats / Q000032:analysis*; D004531:Eggs / Q000032:analysis*; D011200:Poultry; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D003049:Coccidiostats