Ambient pressure REMPI monitoring of acetaldehyde production during the breakdown of ethyl-3-ethoxypropionate (EEP)

Orven F. Swenson; Jason A. Williams; Ray Wells; Terence Tipton; Steve Baxley; Stewart Markgraf

doi:10.1117/12.337470

22 January 1999 Ambient pressure REMPI monitoring of acetaldehyde production during the breakdown of ethyl-3-ethoxypropionate (EEP)

Orven F. Swenson, Jason A. Williams, Ray Wells, Terence Tipton, Steve Baxley, Stewart Markgraf

Author Affiliations +

Proceedings Volume 3535, Advanced Sensors and Monitors for Process Industries and the Environment; (1999) https://doi.org/10.1117/12.337470
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

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.

Citation Download Citation

Orven F. Swenson, Jason A. Williams, Ray Wells, Terence Tipton, Steve Baxley, and Stewart Markgraf "Ambient pressure REMPI monitoring of acetaldehyde production during the breakdown of ethyl-3-ethoxypropionate (EEP)", Proc. SPIE 3535, Advanced Sensors and Monitors for Process Industries and the Environment, (22 January 1999); https://doi.org/10.1117/12.337470

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