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Proceedings Paper

Ambient pressure REMPI monitoring of acetaldehyde production during the breakdown of ethyl-3-ethoxypropionate (EEP)
Author(s): Orven F. Swenson; Jason A. Williams; Ray Wells; Terence Tipton; Steve Baxley; Stewart Markgraf
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Paper Abstract

The production of acetaldehyde was monitored during the simulated atmospheric oxidation of ethyl-3-ethoxyproprionate (EEP), a paint component. The detection of acetaldehyde in ambient pressure air to below 1 ppbv levels was demonstrated using resonance enhanced multiphoton ionization (REMPI) via the two photon resonant 3 s implied by n Rydberg transition at 363.5 nm. The reactions were carried out at room temperature in 100 L FEP Teflon bags while the air was continuously pumped through a parallel plate REMPI cell. Banks of black lights and sun lights provided UV radiation in the 300-450 nm region to simulate atmospheric photocatalysis by the sun. The REMPI measurements confirmed previous GC/MS and FTIR measurements but in real-time with higher sensitivity. The technique can be directly applied to the detection of atmospheric pollutants and real-time monitoring of manufacturing processes.

Paper Details

Date Published: 22 January 1999
PDF: 9 pages
Proc. SPIE 3535, Advanced Sensors and Monitors for Process Industries and the Environment, (22 January 1999); doi: 10.1117/12.337470
Show Author Affiliations
Orven F. Swenson, North Dakota State Univ. (United States)
Jason A. Williams, U.S. Air Force Academy (United States)
Ray Wells, Air Force Research Lab. (United States)
Terence Tipton, Applied Research Associates (United States)
Steve Baxley, Applied Research Associates (United States)
Stewart Markgraf, Applied Research Associates (United States)

Published in SPIE Proceedings Vol. 3535:
Advanced Sensors and Monitors for Process Industries and the Environment
Wim A. de Groot, Editor(s)

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