Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy

Molecular oxygen is detected at low concentrations using photoacoustic spectroscopy despite its unfavorable photoacoustic properties. The system consists of a seed laser diode, a tapered amplifier and a quartz tuning fork based spectrophone, thus employing quartz enhanced photoacoustic spectroscopy...

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Detalles Bibliográficos
Autores principales: Pohlkötter, Andreas, Köhring, Michael, Willer, Ulrike, Schade, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2010
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231212/
https://www.ncbi.nlm.nih.gov/pubmed/22163666
http://dx.doi.org/10.3390/s100908466
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author Pohlkötter, Andreas
Köhring, Michael
Willer, Ulrike
Schade, Wolfgang
author_facet Pohlkötter, Andreas
Köhring, Michael
Willer, Ulrike
Schade, Wolfgang
author_sort Pohlkötter, Andreas
collection PubMed
description Molecular oxygen is detected at low concentrations using photoacoustic spectroscopy despite its unfavorable photoacoustic properties. The system consists of a seed laser diode, a tapered amplifier and a quartz tuning fork based spectrophone, thus employing quartz enhanced photoacoustic spectroscopy (QEPAS). With this system a detection limit of 13 ppm is reached with a compact and long term stable setup. Further improvement of the detection limit is possible by adding suitable gases to the sample gas that promote the radiationless de-excitation of the oxygen molecules.
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spelling pubmed-32312122011-12-07 Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy Pohlkötter, Andreas Köhring, Michael Willer, Ulrike Schade, Wolfgang Sensors (Basel) Article Molecular oxygen is detected at low concentrations using photoacoustic spectroscopy despite its unfavorable photoacoustic properties. The system consists of a seed laser diode, a tapered amplifier and a quartz tuning fork based spectrophone, thus employing quartz enhanced photoacoustic spectroscopy (QEPAS). With this system a detection limit of 13 ppm is reached with a compact and long term stable setup. Further improvement of the detection limit is possible by adding suitable gases to the sample gas that promote the radiationless de-excitation of the oxygen molecules. Molecular Diversity Preservation International (MDPI) 2010-09-09 /pmc/articles/PMC3231212/ /pubmed/22163666 http://dx.doi.org/10.3390/s100908466 Text en © 2010 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Pohlkötter, Andreas
Köhring, Michael
Willer, Ulrike
Schade, Wolfgang
Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title_full Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title_fullStr Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title_full_unstemmed Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title_short Detection of Molecular Oxygen at Low Concentrations Using Quartz Enhanced Photoacoustic Spectroscopy
title_sort detection of molecular oxygen at low concentrations using quartz enhanced photoacoustic spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231212/
https://www.ncbi.nlm.nih.gov/pubmed/22163666
http://dx.doi.org/10.3390/s100908466
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