Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy

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dc.citation.articleNumber100206
dc.citation.journalTitlePhotoacoustics
dc.citation.volumeNumber20
dc.contributor.authorMa, Yufei
dc.contributor.authorHu, Yinqiu
dc.contributor.authorQiao, Shunda
dc.contributor.authorHe, Ying
dc.contributor.authorTittel, Frank K.
dc.date.accessioned2021-12-17T20:09:11Z
dc.date.available2021-12-17T20:09:11Z
dc.date.issued2020
dc.description.abstractA 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 (C2H2) 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.
dc.identifier.citationMa, Yufei, Hu, Yinqiu, Qiao, Shunda, et al.. "Trace gas sensing based on multi-quartz-enhanced photothermal spectroscopy." <i>Photoacoustics,</i> 20, (2020) Elsevier: https://doi.org/10.1016/j.pacs.2020.100206.
dc.identifier.digital1-s2-0-S221359792030046X-main
dc.identifier.doihttps://doi.org/10.1016/j.pacs.2020.100206
dc.identifier.urihttps://hdl.handle.net/1911/111884
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an open access article under the CC BY-NC-ND license
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleTrace gas sensing based on multi-quartz-enhanced photothermal spectroscopy
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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