Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
40, Number 6, July 2002, pp. 309-314
Fast Temperature-Programmed Gas Chromatography–Mass Spectrometry
for Food Analysis
Steven W. Lloyd and Casey
C. Grimm United States Department of Agriculture, Agricultural Research
Service, Southern Regional Research Center, 1100 Robert E. Lee Boulevard, New
Orleans, LA 70124
Fast temperature-programmed gas chromatography (FTGC) is evaluated.
A modified capillary column allowing temperature-program rates as high as 20°C/s
is operated with mass spectrometric detection (MSD). FTGC methods are developed
for the analysis of off-flavors in water, derivatized sugars, and fatty acid
methyl esters. Liquid injection and solid-phase microextraction are evaluated.
Although the resolution can be somewhat lower than analysis with a traditional
column, time savings are significant. Analysis times range from 2 to 4.5 min
compared with 20 to 60 min for conventional methods. MSD allows for the analysis
of some coeluting peaks, which allows for quantitation even when peaks coelute.
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