Evaluation of headspace solid-phase microextraction for the analysis of volatile carbonyl compounds in spirits and alcoholic beverages.
A method was developed for the determination of C1-C6 carbonyl compounds in alcoholic solutions using pentafluorobenzoxymation followed by headspace sampling solid-phase microextraction and subsequent analysis by GC with electron-capture detection. Experimental conditions-alcohol content, exposure time, temperature and sample agitation were optimised. In this method, a spirit or distilled alcoholic beverage is first adjusted to 20% (v/v) alcohol. Detection limits for particular aldehydes and ketone varied from 0.05 to 0.5 microg/l and relative standard deviation was between 2.3 and 20%. Generally, the method showed good linearity for the tested concentration range 8 microg/l-0.32 mg/l with regression coefficients ranging between 0.9434 and 0.9983. The method was applied to the analysis of real alcoholic beverages (vodkas).
Wardencki
Waldemar
W
Department of Analytical Chemistry, Chemical Faculty, Technical University of Gdańsk, 11/12 Narutowicz Str., 80-952 Gdańsk, Poland. wawar@chem.pg.gda.pl
Sowiński
Piotr
P
Curyło
Janusz
J
D001628:Beverages / Q000032:analysis*; D002138:Calibration; D002849:Chromatography, Gas / Q000379:methods*; D000431:Ethanol; D014835:Volatilization
D000431:Ethanol