Laser photoacoustic detection of the essential oil vapors of thyme, mint, and anise

A. M. El-Kahlout; M. M. Al-Jourani; M. I. Abu-Taha; Derek C. Laine

doi:10.1117/12.312811

2 July 1998 Laser photoacoustic detection of the essential oil vapors of thyme, mint, and anise

A. M. El-Kahlout, M. M. Al-Jourani, M. I. Abu-Taha, Derek C. Laine

Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312811
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania

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.

Citation Download Citation

A. M. El-Kahlout, M. M. Al-Jourani, M. I. Abu-Taha, and Derek C. Laine "Laser photoacoustic detection of the essential oil vapors of thyme, mint, and anise", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); https://doi.org/10.1117/12.312811

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