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Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
41, Number 1, January 2003, pp. 31-35
Determination of Limonene Oxidation Products Using SPME and
GC–MS
Susan Sonchik Marine* and Jason Clemons
Miami University Middletown, 4200 E. University Blvd., Middletown, OH 45005
Limonene is a common component found in consumer goods ranging
from beverages to cleaning compounds. Limonene oxidation products, however,
have a less desirable flavor and fragrance. Early detection of limonene oxide
formation would aid quality control. A method is developed to determine the
concentration of limonene oxide in essential oils and beverages using solid-phase
microextraction (SPME). A headspace sampling technique is used to reduce or
eliminate the presence of less volatile components. Several different SPME
fibers are tested, varying in polymer thickness, polymer cross-linking and
bonding, and polarity of the polymer. For each fiber tested, the sampling time
is optimized for reproducible results. The 7-µm-thick bonded poly(dimethylsiloxane)
fiber provides the best results. External standards are used for quantitation.
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