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Proceedings Paper

REMPI detection of volatile aromatic hydrocarbons in ambient air
Author(s): Orven F. Swenson; Gregory D. Gillispie
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Paper Abstract

Volatile aromatic hydrocarbons such as benzene, toluene, ethylbenzene, and xylenes (BTEX), and styrene, aniline, and phenol can be directly and sensitively detected in ambient air by resonance-enhanced multiphoton ionization (REMPI) spectroscopy. The REMPI spectra closely resemble conventional absorbance spectra, but the REMPI technique is far more sensitive. Detection limits for directly focused tunable laser light into the ionization cell are less than 10 ppbv for BTEX and less than 1 ppbv for styrene, aniline, and phenol. Benzene in aqueous solution was remotely detected down to concentrations at the (mu) g/L level by a headspace analysis in which light was delivered to the ionization cell over a 20-meter long optical fiber.

Paper Details

Date Published: 26 November 1996
PDF: 9 pages
Proc. SPIE 2835, Advanced Technologies for Environmental Monitoring and Remediation, (26 November 1996); doi: 10.1117/12.259767
Show Author Affiliations
Orven F. Swenson, North Dakota State Univ. (United States)
Gregory D. Gillispie, North Dakota State Univ. (United States)

Published in SPIE Proceedings Vol. 2835:
Advanced Technologies for Environmental Monitoring and Remediation
Tuan Vo-Dinh, Editor(s)

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