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Calibration of gas chromatography inlet splitting for gas chromatography olfactometry dilution analysis
Author(s) -
Deibler Kathryn D.,
Martin Llesca Fabien,
Lavin Edward H.,
Acree Terry E.
Publication year - 2004
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1454
Subject(s) - chemistry , chromatography , olfactometry , gas chromatography , dilution , calibration , solid phase microextraction , serial dilution , injection port , analytical chemistry (journal) , flame ionization detector , solvent , gas chromatography–mass spectrometry , mass spectrometry , organic chemistry , medicine , physics , statistics , mathematics , alternative medicine , surgery , pathology , thermodynamics
Abstract The application of solid phase microextraction (SPME) to gas chromatography–olfactometry (GC–O) dilution analysis has previously been achieved by varying the thickness of the bre phase and the length of exposure. In this study, eight steps of dilution by a factor of 2 were achieved by splitting of the injected sample in different ratios in the gas chromatograph's injection port. Using solvent injection and SPME headspace sampling, it was found that the nominal split ratios of the hardware requires calibration to achieve the actual dilutions desired. This calibration method was applied to the CharmAnalysis of coffee as it was brewed. Copyright © 2004 John Wiley & Sons, Ltd.