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Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy
A multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were used in M-QEPTS to increase the signal amplitude...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7511967/ https://www.ncbi.nlm.nih.gov/pubmed/32995269 http://dx.doi.org/10.1016/j.pacs.2020.100206 |
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author | Ma, Yufei Hu, Yinqiu Qiao, Shunda He, Ying Tittel, Frank K. |
author_facet | Ma, Yufei Hu, Yinqiu Qiao, Shunda He, Ying Tittel, Frank K. |
author_sort | Ma, Yufei |
collection | PubMed |
description | A multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were used in M-QEPTS to increase the signal amplitude by adding the generated piezoelectric signals. The coating film of the QTFs was removed in order to improve the laser absorption and transmission. Acetylene (C(2)H(2)) was chosen as the target analyte. Wavelength modulation spectroscopy (WMS) and 2nd harmonic detection were utilized for the concentration detection. Limit of detection (LoD) of 0.97 ppm was achieved with a 1 second integration time for the M-QEPTS sensor, which realized a 1.51 times signal enhancement compared to a traditional QEPTS sensor employing a single QTF. By using an Allan deviation analysis approach, LoD of 0.19 ppm for an optimum integration time of 200 s was obtained. |
format | Online Article Text |
id | pubmed-7511967 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-75119672020-09-28 Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy Ma, Yufei Hu, Yinqiu Qiao, Shunda He, Ying Tittel, Frank K. Photoacoustics Research Article A multi-quartz-enhanced photothermal spectroscopy (M-QEPTS) based trace gas detection method is reported for the first time. Different from traditional QEPTS sensor employing a single quartz tuning fork (QTF) as a photothermal detector, two QTFs were used in M-QEPTS to increase the signal amplitude by adding the generated piezoelectric signals. The coating film of the QTFs was removed in order to improve the laser absorption and transmission. Acetylene (C(2)H(2)) was chosen as the target analyte. Wavelength modulation spectroscopy (WMS) and 2nd harmonic detection were utilized for the concentration detection. Limit of detection (LoD) of 0.97 ppm was achieved with a 1 second integration time for the M-QEPTS sensor, which realized a 1.51 times signal enhancement compared to a traditional QEPTS sensor employing a single QTF. By using an Allan deviation analysis approach, LoD of 0.19 ppm for an optimum integration time of 200 s was obtained. Elsevier 2020-09-04 /pmc/articles/PMC7511967/ /pubmed/32995269 http://dx.doi.org/10.1016/j.pacs.2020.100206 Text en © 2020 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Ma, Yufei Hu, Yinqiu Qiao, Shunda He, Ying Tittel, Frank K. Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title | Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title_full | Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title_fullStr | Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title_full_unstemmed | Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title_short | Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
title_sort | trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7511967/ https://www.ncbi.nlm.nih.gov/pubmed/32995269 http://dx.doi.org/10.1016/j.pacs.2020.100206 |
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