Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen
Humic acids, isolated from selected soils of Grønfjorden area (Spitsbergen) were investigated in terms of molecular composition and resistance of decomposition. The degree of soils organic matter stabilization has been assessed with the use of modern instrumental methods (nuclear magnetic resonance...
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ftdoajarticles:oai:doaj.org/article:6a7270d7c723489aafb382feb510dace 2023-05-15T15:05:07+02:00 Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen Vyacheslav Polyakov Elya Zazovskaya Evgeny Abakumov 2019-06-01T00:00:00Z https://doi.org/10.24425/ppr.2019.128369 https://doaj.org/article/6a7270d7c723489aafb382feb510dace EN eng Polish Academy of Sciences https://journals.pan.pl/Content/111976/PDF/Polish%20Polar%20Res.%202-19%203-V.Polyakov.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.128369 https://doaj.org/article/6a7270d7c723489aafb382feb510dace Polish Polar Research, Vol vol. 40, Iss No 2, Pp 105-120 (2019) arctic svalbard cp/mas 13c-nmr elemental composition organic matter Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.24425/ppr.2019.128369 2022-12-31T00:46:36Z Humic acids, isolated from selected soils of Grønfjorden area (Spitsbergen) were investigated in terms of molecular composition and resistance of decomposition. The degree of soils organic matter stabilization has been assessed with the use of modern instrumental methods (nuclear magnetic resonance spectroscopy (CP/MAS 13C-NMR). Analysis of the humic acids showed that aromatic compounds prevail in the organic matter formed in cryoconites, located on the glaciers surfaces. The predominance of aliphatic fragments is revealed in the soils in tidal zone that form on the coastal terrace. This could be caused by sedimentation of fresh organic matter exhibiting low decomposition stage due to the harsh climate and processes of hydrogenation in the humic acids, destruction of the C-C bonds and formation of chains with a high hydrogen content. These processes result in formation of aliphatic fragments in the humic acids. In general, soils of the studied region characterizes by low stabilized soil organic matter which is indicated by low aromaticity of the HAs. Article in Journal/Newspaper Arctic Polar Research Svalbard Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Svalbard |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
arctic svalbard cp/mas 13c-nmr elemental composition organic matter Geology QE1-996.5 |
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arctic svalbard cp/mas 13c-nmr elemental composition organic matter Geology QE1-996.5 Vyacheslav Polyakov Elya Zazovskaya Evgeny Abakumov Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
topic_facet |
arctic svalbard cp/mas 13c-nmr elemental composition organic matter Geology QE1-996.5 |
description |
Humic acids, isolated from selected soils of Grønfjorden area (Spitsbergen) were investigated in terms of molecular composition and resistance of decomposition. The degree of soils organic matter stabilization has been assessed with the use of modern instrumental methods (nuclear magnetic resonance spectroscopy (CP/MAS 13C-NMR). Analysis of the humic acids showed that aromatic compounds prevail in the organic matter formed in cryoconites, located on the glaciers surfaces. The predominance of aliphatic fragments is revealed in the soils in tidal zone that form on the coastal terrace. This could be caused by sedimentation of fresh organic matter exhibiting low decomposition stage due to the harsh climate and processes of hydrogenation in the humic acids, destruction of the C-C bonds and formation of chains with a high hydrogen content. These processes result in formation of aliphatic fragments in the humic acids. In general, soils of the studied region characterizes by low stabilized soil organic matter which is indicated by low aromaticity of the HAs. |
format |
Article in Journal/Newspaper |
author |
Vyacheslav Polyakov Elya Zazovskaya Evgeny Abakumov |
author_facet |
Vyacheslav Polyakov Elya Zazovskaya Evgeny Abakumov |
author_sort |
Vyacheslav Polyakov |
title |
Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
title_short |
Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
title_full |
Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
title_fullStr |
Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
title_full_unstemmed |
Molecular composition of humic substances isolated from selected soils and cryconite of the Grønfjorden area, Spitsbergen |
title_sort |
molecular composition of humic substances isolated from selected soils and cryconite of the grønfjorden area, spitsbergen |
publisher |
Polish Academy of Sciences |
publishDate |
2019 |
url |
https://doi.org/10.24425/ppr.2019.128369 https://doaj.org/article/6a7270d7c723489aafb382feb510dace |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Polar Research Svalbard Spitsbergen |
genre_facet |
Arctic Polar Research Svalbard Spitsbergen |
op_source |
Polish Polar Research, Vol vol. 40, Iss No 2, Pp 105-120 (2019) |
op_relation |
https://journals.pan.pl/Content/111976/PDF/Polish%20Polar%20Res.%202-19%203-V.Polyakov.pdf https://doaj.org/toc/0138-0338 https://doaj.org/toc/2081-8262 0138-0338 2081-8262 https://doi.org/10.24425/ppr.2019.128369 https://doaj.org/article/6a7270d7c723489aafb382feb510dace |
op_doi |
https://doi.org/10.24425/ppr.2019.128369 |
_version_ |
1766336873676931072 |