Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer

A tunable laser absorption spectrometer (TLAS) was developed for the simultaneous measurement of δ(13)C and δD values of methane (CH(4)). A mid-infrared interband cascade laser (ICL) emitting around 3.27 µm was used to measure the absorption of the three most abundant isotopologues in CH(4) with a s...

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Autores principales: Kääriäinen, Teemu, Richmond, Craig A., Manninen, Albert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5855934/
https://www.ncbi.nlm.nih.gov/pubmed/29414879
http://dx.doi.org/10.3390/s18020496
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author Kääriäinen, Teemu
Richmond, Craig A.
Manninen, Albert
author_facet Kääriäinen, Teemu
Richmond, Craig A.
Manninen, Albert
author_sort Kääriäinen, Teemu
collection PubMed
description A tunable laser absorption spectrometer (TLAS) was developed for the simultaneous measurement of δ(13)C and δD values of methane (CH(4)). A mid-infrared interband cascade laser (ICL) emitting around 3.27 µm was used to measure the absorption of the three most abundant isotopologues in CH(4) with a single, mode-hop free current sweep. The instrument was validated against methane samples of fossil and biogenic origin with known isotopic composition. Three blended mixtures with varied biogenic content were prepared volumetrically, and their δ(13)C and δD values were determined. Analysis demonstrated that, provided the isotopic composition of the source materials was known, the δ(13)C and δD values alone were sufficient to determine the biogenic content of the blended samples to within 1.5%.
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spelling pubmed-58559342018-03-20 Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer Kääriäinen, Teemu Richmond, Craig A. Manninen, Albert Sensors (Basel) Article A tunable laser absorption spectrometer (TLAS) was developed for the simultaneous measurement of δ(13)C and δD values of methane (CH(4)). A mid-infrared interband cascade laser (ICL) emitting around 3.27 µm was used to measure the absorption of the three most abundant isotopologues in CH(4) with a single, mode-hop free current sweep. The instrument was validated against methane samples of fossil and biogenic origin with known isotopic composition. Three blended mixtures with varied biogenic content were prepared volumetrically, and their δ(13)C and δD values were determined. Analysis demonstrated that, provided the isotopic composition of the source materials was known, the δ(13)C and δD values alone were sufficient to determine the biogenic content of the blended samples to within 1.5%. MDPI 2018-02-07 /pmc/articles/PMC5855934/ /pubmed/29414879 http://dx.doi.org/10.3390/s18020496 Text en © 2018 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kääriäinen, Teemu
Richmond, Craig A.
Manninen, Albert
Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title_full Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title_fullStr Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title_full_unstemmed Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title_short Determining Biogenic Content of Biogas by Measuring Stable Isotopologues (12)CH(4), (13)CH(4), and CH(3)D with a Mid-Infrared Direct Absorption Laser Spectrometer
title_sort determining biogenic content of biogas by measuring stable isotopologues (12)ch(4), (13)ch(4), and ch(3)d with a mid-infrared direct absorption laser spectrometer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5855934/
https://www.ncbi.nlm.nih.gov/pubmed/29414879
http://dx.doi.org/10.3390/s18020496
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