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Proceedings Paper

Vapor detection of polyaromatic compounds using laser-induced fluorescence
Author(s): Zenhuan Chi; Brian M. Cullum; Joel Mobley; Gordon H. Miller; Tuan Vo-Dinh
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Paper Abstract

12 In this work, we present the fluorescence spectra of anthracene and pyrene vapors at different elevated temperatures (from 150 to 650 degree(s)C) excited with the 337 nm line of a nitrogen laser. We describe the high temperature effects on the resulting spectral properties including spectral intensity, spectral bandwidth and spectral shift. We found that the PAH fluorescence spectral bandwidths become very broad as the temperature increases. The broadening is mainly due to thermal vibrational sequence congestion. We also have found that the fluorescence intensity of pyrene vapor increases with increasing temperature, which results from the increase of the pyrene vapor absorption cross section at 337 nm.

Paper Details

Date Published: 14 February 2001
PDF: 7 pages
Proc. SPIE 4199, Water, Ground, and Air Pollution Monitoring and Remediation, (14 February 2001); doi: 10.1117/12.417374
Show Author Affiliations
Zenhuan Chi, Oak Ridge National Lab. (United States)
Brian M. Cullum, Oak Ridge National Lab. (United States)
Joel Mobley, Oak Ridge National Lab. (United States)
Gordon H. Miller, Oak Ridge National Lab. (United States)
Tuan Vo-Dinh, Oak Ridge National Lab. (United States)


Published in SPIE Proceedings Vol. 4199:
Water, Ground, and Air Pollution Monitoring and Remediation
Tuan Vo-Dinh; Robert L. Spellicy, Editor(s)

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