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Proceedings Paper

Photoluminescence study of adsorption-luminescent Al2O3 sensor for determining odor substances in air
Author(s): Koh Utsunomiya; Masuo Nakagawa; Shinji Chikamori; Masaki Kohata; Tsuyoshi Tomiyama; Isao Yamamoto; Tomonori Wada; Nobuhiko Yamashita; Yoshihiko Yamashita
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Paper Abstract

An adsorption-luminescent sensor enables us to discriminate and determine the vapor of odor substances by measuring temperature dependence of luminescence from the sensor (powder of (gamma) -Al2O3) which previously adsorbed odor vapor in the air. Profiles of the adsorption luminescence (AL) spectra as a function of temperature for butanol, acetone, and n- butyric acid are apparently different from each other, and these vapors of 1 to 100 ppm in concentration in the air can be determined from the total luminescence intensity. The study of photoluminescence (PL) observed for the sensor after contact with these odor vapors implies that AL is peculiar chemiluminescence during catalytic oxidation of odor vapor which produces water and surface hydroxide.

Paper Details

Date Published: 18 May 1993
PDF: 8 pages
Proc. SPIE 1885, Advances in Fluorescence Sensing Technology, (18 May 1993); doi: 10.1117/12.144700
Show Author Affiliations
Koh Utsunomiya, Okayama Univ. of Science (Japan)
Masuo Nakagawa, Okayama Univ. of Science (Japan)
Shinji Chikamori, Okayama Univ. of Science (Japan)
Masaki Kohata, Okayama Univ. of Science (Japan)
Tsuyoshi Tomiyama, Okayama Univ. of Science (Japan)
Isao Yamamoto, Okayama Univ. of Science (Japan)
Tomonori Wada, Okayama Univ. (Japan)
Nobuhiko Yamashita, Okayama Univ. (Japan)
Yoshihiko Yamashita, Okayama Univ. (Japan)

Published in SPIE Proceedings Vol. 1885:
Advances in Fluorescence Sensing Technology
Joseph R. Lakowicz; Richard B. Thompson, Editor(s)

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