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TITLE:  Confirmation of identity by gas chromatography/tandem mass spectrometry of sulfathiazole, sulfamethazine, sulfachloropyridazine, and sulfadimethoxine from bovine or swine liver extracts after quantitation by gas chromatography/electron-capture detection
 
AUTHORS:  Matusik JE;Sternal RS;Barnes CJ;Sphon JA;
 
YEAR:  1990
 
JOURNAL ABBREV:  J Assoc Off Anal Chem
 
MONTH:  Jul
 
TYPE:  JOUR
 
REFMAN INDEX:  482
 
JOURNAL FULL:  Journal - Association of Official Analytical Chemists
 
VOLUME:  73
 
ISSUE:  4
 
START PAGE:  529
 
END PAGE:  533
 
KEYWORDS:  analysis;Animals;Cattle;chemistry;Chromatography;Chromatography,Gas;Drug Residues;Food;Indicators and Reagents;Liver;Mass Spectrometry;Sulfachlorpyridazine;Sulfadimethoxine;Sulfamethazine;Sulfathiazoles;Sulfonamides;Swine;Tandem Mass Spectrometry;Tissue Extracts;veterinary;
 
ABSTRACT:  Four sulfonamide veterinary drug residues were quantitated by electron-capture detection (ECD) after separation by gas chromatography (GC). The identities of sulfathiazole (ST), sulfamethazine (SM), sulfachloropyridazine (SCP), and sulfadimethoxine (SDM) were confirmed in bovine or swine liver residues by tandem mass spectrometry (MS/MS). Bovine or swine liver tissues were extracted by using either the Tishler or the Manuel-Steller cleanup. The methylated residues containing ST, SM, SCP, and SDM were separated by GC prior to MS/MS daughter ion analysis. Control tissue, control tissue fortified at 0.1 ppm, and incurred tissue residues at approximately 0.1 ppm were analyzed for these 4 sulfonamides. A Finnigan Model TSQ-46 operating in the chemical ionization mode was used to perform the MS/MS daughter ion experiments. The identities of all 4 sulfonamides were confirmed in a single GC/MS/MS analysis
 
AFFILIATIONS:  Food and Drug Administration, Division of Contaminants Chemistry, Washington, DC 20204
 
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