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Proceedings Paper

Laser photoacoustic detection of the essential oil vapors of thyme, mint, and anise
Author(s): A. M. El-Kahlout; M. M. Al-Jourani; M. I. Abu-Taha; Derek C. Laine
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Paper Abstract

Photoacoustic studies of the vapors of the essential oils of thyme, mint and anise have been made using a line-tunable waveguide CO2 laser in conjunction with a heat-pipe type of photoacoustic vapor sample cell operated over the temperature range 20 - 180 degree(s)C. Identifying spectral fingerprint features are found in the 9 - 10 micrometers spectral region for each of the three essential oils investigated. The principal features of the photoacoustic spectrum of each essential oil are associated with the dominant chemicals present i.e. thymol in thyme oil, menthol in mint and anethole in anise.

Paper Details

Date Published: 2 July 1998
PDF: 6 pages
Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); doi: 10.1117/12.312811
Show Author Affiliations
A. M. El-Kahlout, Keele Univ. (United Kingdom)
M. M. Al-Jourani, Keele Univ. (United Kingdom)
M. I. Abu-Taha, Al Quds Univ. (Israel)
Derek C. Laine, Keele Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 3405:
ROMOPTO '97: Fifth Conference on Optics
Valentin I. Vlad; Dan C. Dumitras, Editor(s)

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