title: Comparison of methods for extraction of ethyl carbamate from alcoholic beverages in gas chromatography/mass spectrometry analysis.
abstract: A procedure to analyze ethyl carbamate (EC) by gas chromatography/mass spectrometry was optimized and validated. Deuterated EC (d5-EC) was added to the samples as an internal standard followed by extraction with polystyrene crosslinked polystyrene cartridges using minimal volumes of ethyl acetate. The EC response was measured in selective ion monitoring (SIM) mode and found to be linear in the range between the limit of quantitation (10 micro/L) and 1000 microg/L. EC recoveries varied from 92 to 112%, with the average value of 100 +/- 8%. The procedure compared well (r2 = 0.9970) with the existing AOAC Official Method with the added benefits of minimal solvent usage and reduced matrix interferences.
authors.affiliation: Alcohol and Tobacco Tax and Trade Bureau, National Laboratory Center, Beltsville, MD 20705, USA. armen.mirzoian@ttb.gov
authors.forename: Armen
authors.initials: A
authors.lastname: Mirzoian
authors.forename: Abdul
authors.initials: A
authors.lastname: Mabud
mesh_terms: D000434:Alcoholic Beverages; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D007477:Ions; D013058:Mass Spectrometry / Q000379:methods; D012015:Reference Standards; D012997:Solvents / Q000032:analysis; D014520:Urethane / Q000032:analysis*
chemical_list: D007477:Ions; D012997:Solvents; D014520:Urethane