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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > February  >
In the Laboratory
Analysis of Volatile Fragrance and Flavor Compounds by Headspace Solid Phase Microextraction and GC-MS: An Undergraduate Instrumental Analysis Experiment
Randolph C. Galipo, Alfredo J. Canhoto, Michael D. Walla, and Stephen L. Morgan
The University of South Carolina, Columbia Campus, Department of Chemistry & Biochemistry, Columbia, South Carolina 29208
Cover
February 1999
Vol. 76 No. 2
p. 245
Abstract
A senior-level undergraduate laboratory experiment that demonstrates the use of solid-phase microextraction (SPME) and capillary gas chromatography-mass spectrometry (GC-MS) was developed for the identification of volatile compounds in consumer products. SPME minimizes sample preparation and concentrates volatile analytes in a solvent-free manner. Volatile flavor and fragrance compounds were extracted by SPME from the headspace of vials containing shampoos, chewing gums, and perfumes and analyzed by GC-MS. Headspace SPME was shown to be more sensitive than conventional headspace analysis of similar samples performed with an airtight syringe. Analysis times were less than 30 min, allowing multiple analyses to be performed in a typical laboratory class period.
More Information
*  Citation
 Galipo, Randolph C.; Canhoto, Alfredo J.; Walla, Michael D.; Morgan, Stephen L. J. Chem. Educ. 1999 76 245.
*  Keywords
 Laboratory Equipment / Apparatus; Chromatography; Analytical Chemistry; Mass Spectrometry
*  History
 Created:
Last Updated:		 June 15, 1999
June 22, 2005
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