Cargando…

An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples

Hydrogen isotope analysis of coal is an important tool in the geochemical analysis of coal. The traditional method of hydrogen isotope analysis of coal requires the oxidation of organic matter bound hydrogen in coal to water by an oxidizing agent and then its reduction to hydrogen by a reducing agen...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Hongwei, Feng, Lianjun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021440/
https://www.ncbi.nlm.nih.gov/pubmed/35464206
http://dx.doi.org/10.3389/fchem.2022.840473
_version_ 1784689822013587456
author Li, Hongwei
Feng, Lianjun
author_facet Li, Hongwei
Feng, Lianjun
author_sort Li, Hongwei
collection PubMed
description Hydrogen isotope analysis of coal is an important tool in the geochemical analysis of coal. The traditional method of hydrogen isotope analysis of coal requires the oxidation of organic matter bound hydrogen in coal to water by an oxidizing agent and then its reduction to hydrogen by a reducing agent. This method is time-consuming and laborious, and makes it difficult to cope with the rapid detection of large numbers of samples. The recent development of continuous flow IRMS systems (CF-IRMS) has solved the problem of inefficient analysis, but does not guarantee the quantitative conversion of organic bound H to H(2), resulting in inaccurate measured hydrogen isotope values. In this study, for the hydrogen isotope analysis of coal, an alternative continuous flow system (Cr-EA-IRMS) was used to achieve high precision hydrogen isotope measurements of coal samples by filling a quartz reaction tube with Cr. The results obtained by this method (−121.3 ± 1.1‰) for the reference material (GBW11104) are consistent with those obtained by the conventional method (−121.4 ± 0.6‰). Using this method, hydrogen isotope measurements for a variety of imported coals revealed significant differences in the hydrogen isotopes of coals from different coal producing regions including Russia, South East Asia, and Australia. Therefore, the use of hydrogen isotope testing analysis of coal could be a potential means of tracing the origin of coal.
format Online
Article
Text
id pubmed-9021440
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-90214402022-04-22 An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples Li, Hongwei Feng, Lianjun Front Chem Chemistry Hydrogen isotope analysis of coal is an important tool in the geochemical analysis of coal. The traditional method of hydrogen isotope analysis of coal requires the oxidation of organic matter bound hydrogen in coal to water by an oxidizing agent and then its reduction to hydrogen by a reducing agent. This method is time-consuming and laborious, and makes it difficult to cope with the rapid detection of large numbers of samples. The recent development of continuous flow IRMS systems (CF-IRMS) has solved the problem of inefficient analysis, but does not guarantee the quantitative conversion of organic bound H to H(2), resulting in inaccurate measured hydrogen isotope values. In this study, for the hydrogen isotope analysis of coal, an alternative continuous flow system (Cr-EA-IRMS) was used to achieve high precision hydrogen isotope measurements of coal samples by filling a quartz reaction tube with Cr. The results obtained by this method (−121.3 ± 1.1‰) for the reference material (GBW11104) are consistent with those obtained by the conventional method (−121.4 ± 0.6‰). Using this method, hydrogen isotope measurements for a variety of imported coals revealed significant differences in the hydrogen isotopes of coals from different coal producing regions including Russia, South East Asia, and Australia. Therefore, the use of hydrogen isotope testing analysis of coal could be a potential means of tracing the origin of coal. Frontiers Media S.A. 2022-04-07 /pmc/articles/PMC9021440/ /pubmed/35464206 http://dx.doi.org/10.3389/fchem.2022.840473 Text en Copyright © 2022 Li and Feng. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Li, Hongwei
Feng, Lianjun
An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title_full An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title_fullStr An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title_full_unstemmed An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title_short An Improved Cr-EA-IRMS Method for the Effective Determination of the Hydrogen Isotopes in Coal Samples
title_sort improved cr-ea-irms method for the effective determination of the hydrogen isotopes in coal samples
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9021440/
https://www.ncbi.nlm.nih.gov/pubmed/35464206
http://dx.doi.org/10.3389/fchem.2022.840473
work_keys_str_mv AT lihongwei animprovedcreairmsmethodfortheeffectivedeterminationofthehydrogenisotopesincoalsamples
AT fenglianjun animprovedcreairmsmethodfortheeffectivedeterminationofthehydrogenisotopesincoalsamples
AT lihongwei improvedcreairmsmethodfortheeffectivedeterminationofthehydrogenisotopesincoalsamples
AT fenglianjun improvedcreairmsmethodfortheeffectivedeterminationofthehydrogenisotopesincoalsamples