title: Determination of succinonitrile in horse urine by gas chromatography-nitrogen-phosphorus detector and gas chromatography-mass spectrometry.
abstract: A chromatographic method was developed to detect and confirm the presence of succinonitrile (SDN) in horse urine samples, for antidoping control. The urine samples (5 ml) were extracted with diethyl ether and screened by gas chromatography-nitrogen-phosphorus detector and the confirmation of the drug's presence was accomplished by using gas chromatography-mass selective detection. The recovery of extraction was 78 and 81% for 1.0 and 2.0 micrograms ml-1 (relative standard deviation, < 10%), respectively. Urine samples collected after the administration of Energisan were positive for SDN (1-30 h) in all samples analysed.
authors.affiliation: Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil.
authors.forename: R C
authors.initials: RC
authors.lastname: Pedroso
authors.forename: M C
authors.initials: MC
authors.lastname: Salvadori
authors.forename: M H
authors.initials: MH
authors.lastname: Andraus
authors.forename: N M
authors.initials: NM
authors.lastname: Lopez
mesh_terms: D000818:Animals; D002849:Chromatography, Gas / Q000379:methods; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006736:Horses / Q000652:urine*; D008403:Mass Screening / Q000662:veterinary; D009570:Nitriles / Q000302:isolation & purification / Q000652:urine*
chemical_list: D009570:Nitriles; C010337:succinonitrile