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Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite
Photoacoustic spectroscopic detection of infrared absorption often produces spectra with enhanced intensities for weaker peaks, enabling the detection of features due to overtones and combinations, as well as less-abundant isotopic species. To illustrate this phenomenon, we present and discuss photo...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8255507/ https://www.ncbi.nlm.nih.gov/pubmed/33783238 http://dx.doi.org/10.1177/00037028211009212 |
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author | Campbell, Stephen Dusseault, Marisa Xu, Ben Michaelian, Kirk H. Poduska, Kristin M. |
author_facet | Campbell, Stephen Dusseault, Marisa Xu, Ben Michaelian, Kirk H. Poduska, Kristin M. |
author_sort | Campbell, Stephen |
collection | PubMed |
description | Photoacoustic spectroscopic detection of infrared absorption often produces spectra with enhanced intensities for weaker peaks, enabling the detection of features due to overtones and combinations, as well as less-abundant isotopic species. To illustrate this phenomenon, we present and discuss photoacoustic infrared spectra of calcite. We use linearization of rapid-scan spectra, as well as comparing step-scan and rapid-scan spectra, to demonstrate that saturation is not the driving force behind these enhanced intensities. Our results point to a significant knowledge gap, since a theoretical basis for the enhancement of these weak bands has not yet been developed. |
format | Online Article Text |
id | pubmed-8255507 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-82555072021-07-13 Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite Campbell, Stephen Dusseault, Marisa Xu, Ben Michaelian, Kirk H. Poduska, Kristin M. Appl Spectrosc Articles Photoacoustic spectroscopic detection of infrared absorption often produces spectra with enhanced intensities for weaker peaks, enabling the detection of features due to overtones and combinations, as well as less-abundant isotopic species. To illustrate this phenomenon, we present and discuss photoacoustic infrared spectra of calcite. We use linearization of rapid-scan spectra, as well as comparing step-scan and rapid-scan spectra, to demonstrate that saturation is not the driving force behind these enhanced intensities. Our results point to a significant knowledge gap, since a theoretical basis for the enhancement of these weak bands has not yet been developed. SAGE Publications 2021-04-22 2021-07 /pmc/articles/PMC8255507/ /pubmed/33783238 http://dx.doi.org/10.1177/00037028211009212 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Articles Campbell, Stephen Dusseault, Marisa Xu, Ben Michaelian, Kirk H. Poduska, Kristin M. Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title | Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title_full | Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title_fullStr | Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title_full_unstemmed | Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title_short | Photoacoustic Detection of Weak Absorption Bands in Infrared Spectra of Calcite |
title_sort | photoacoustic detection of weak absorption bands in infrared spectra of calcite |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8255507/ https://www.ncbi.nlm.nih.gov/pubmed/33783238 http://dx.doi.org/10.1177/00037028211009212 |
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