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Permanent link (DOI): https://doi.org/10.7939/R3V05H

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Development of a Mid-infrared Detection System for Real-time Measurements of Gas Phase Benzene, Toluene, Ethylbenzene and Xylenes using a Tunable External Cavity Quantum Cascade Laser Open Access

Descriptions

Other title
Subject/Keyword
UV
Mid-IR
EC-QCL
BTEX
Spectroscopy
Real-time
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Momen Nejad, Boshra
Supervisor and department
Jaeger, Wolfgang (Chemistry)
Tulip, John (Electrical and Computer Engineering)
Examining committee member and department
Jacob, Zubin (Electrical and Computer Engineering)
Jaeger, Wolfgang (Chemistry)
Tulip, John (Electrical and Computer Engineering)
Tsui, Ying (Electrical and Computer Engineering)
Department
Department of Electrical and Computer Engineering
Specialization
Photonics and Plasmas
Date accepted
2012-04-02T10:26:29Z
Graduation date
2012-06
Degree
Master of Science
Degree level
Master's
Abstract
The chemical transformation of trace gases, including reactions that result in aerosol particle formation, as well as the composition of the atmosphere deeply influence air quality and Earth's global climate. Use of a simulation chamber to study smog formation is a common method to investigate chemical transformations of trace gases. We focus our efforts on benzene, toluene, ethyl-benzene and m-, o-, and p-xylene gases (i.e., BTEX gases), which are often associated with air emissions from petroleum production industries. Studies have shown that these gases have multiple impacts on the environment and public health along with their effect on photochemical smog and ozone formation in the troposphere. We demonstrate our progress in developing an application of mid-IR continuous wave External Cavity Quantum Cascade Laser (EC-QCL) absorption spectroscopy for measurements of multiple trace gas species in combination with a smog simulation chamber. The results are compared to in situ measurements of the trace gas species with UV absorption spectroscopy.
Language
English
DOI
doi:10.7939/R3V05H
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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