Examination of VOC Concentration of Aroma Essential Oils and Their Major VOCs Diffused in Room Air

Toshio Itoh, Yoshitake Masuda, Ichiro Matsubara, Junichirou Arai and Woosuck Shin
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Toshio Itoh: National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan
Yoshitake Masuda: National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan
Ichiro Matsubara: National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan
Junichirou Arai: Technology and Innovation Center, Daikin Industries Ltd., Nishi-Hitotsuya, Osaka 566-8585, Japan
Woosuck Shin: National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan

IJERPH, 2022, vol. 19, issue 5, 1-15

Abstract: This study analyzed temporal variation of the composition of volatile organic compounds (VOCs) at different diffusion time of gaseous phase of aroma compounds of four essential oils, lavender, tea tree, eucalyptus, and melissa. GC/MS methodology with the trace gas sampling by a thermal desorption tube is used to quantitatively determine the concentration of the corresponding 14 kinds of major and original VOCs in four essential oils. This study revealed for the first time that the concentration level of gaseous phase composition is varied, with a diffusion time from that of the liquid phase at equilibrium with it and the VOCs in the essential oils are classified into two groups, depending on whether their concentration with the time. It is verified that the total concentration of VOCs of these essential oils in the room air diffused by the ultrasonic diffuser is as low as 0.6 ppb and decreased soon below 0.1 ppb.

Keywords: essential oil; aroma oil; melissa; lavender; tea tree; eucalyptus; GC/MS (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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