A characteristic study of humic acids isolated from Arctic fjord sediments
Humic substances are ubiquitous natural materials found in sediments as a product of biochemical transformation reactions representing a significant proportion of organic carbon cycle on earth. This study involves the analysis of humic substances with special emphasis on humic acids (HAs) in sedimen...
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Polar Research Institute of China - PRIC
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ftarcticportal:oai:generic.eprints.org:2679 2023-12-10T09:39:01+01:00 A characteristic study of humic acids isolated from Arctic fjord sediments Mathew, Jennees Shaji, Aswathy Gopinath, Anu Krishnan, Kottekkatu Padinchati Louis, Sanil Vadakkan Pradeep, Anoop Pullarkkat 2019-03 application/pdf http://library.arcticportal.org/2679/ http://library.arcticportal.org/2679/1/A1901003.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2679/1/A1901003.pdf Mathew, Jennees and Shaji, Aswathy and Gopinath, Anu and Krishnan, Kottekkatu Padinchati and Louis, Sanil Vadakkan and Pradeep, Anoop Pullarkkat (2019) A characteristic study of humic acids isolated from Arctic fjord sediments. Advances in Polar Science, 30 (1). pp. 24-34. Terrestrial Article PeerReviewed 2019 ftarcticportal 2023-11-15T23:54:41Z Humic substances are ubiquitous natural materials found in sediments as a product of biochemical transformation reactions representing a significant proportion of organic carbon cycle on earth. This study involves the analysis of humic substances with special emphasis on humic acids (HAs) in sediments collected from the Kongsfjorden System of Arctic region in June, 2017. The characterization of the isolated HAs were done using various spectroscopic techniques viz. UV-visible, Fluorescence, FTIR and NMR. Isolated HAs were also undergone for elemental analysis along with other characterization. The UV spectral analysis results with a lower E4/E6 ratio suggesting the presence of HAs with high degree of aromaticity and condensation. Indications for the presence of hydroxyl, methyl, methylene, carbonyl, carboxyl, phenol, alcohol and amide groups were obtained from the FTIR spectrums of HAs. NMR spectral characteristics also confirm the presence of OH group as well as the presence of CH protons adjacent to C=X, were X can be any electronegative element. This also confirms the presence of carbonyl group which is also evident in the FTIR spectral studies. Presence of aliphatic regions slightly more dominated with long chain and/or alicyclic moieties rather than methyl groups was also inferred from the results of NMR. Article in Journal/Newspaper Advances in Polar Science Arctic Arctic Kongsfjord* Kongsfjorden Polar Science Polar Science Arctic Portal Library Arctic |
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Arctic Portal Library |
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ftarcticportal |
language |
English |
topic |
Terrestrial |
spellingShingle |
Terrestrial Mathew, Jennees Shaji, Aswathy Gopinath, Anu Krishnan, Kottekkatu Padinchati Louis, Sanil Vadakkan Pradeep, Anoop Pullarkkat A characteristic study of humic acids isolated from Arctic fjord sediments |
topic_facet |
Terrestrial |
description |
Humic substances are ubiquitous natural materials found in sediments as a product of biochemical transformation reactions representing a significant proportion of organic carbon cycle on earth. This study involves the analysis of humic substances with special emphasis on humic acids (HAs) in sediments collected from the Kongsfjorden System of Arctic region in June, 2017. The characterization of the isolated HAs were done using various spectroscopic techniques viz. UV-visible, Fluorescence, FTIR and NMR. Isolated HAs were also undergone for elemental analysis along with other characterization. The UV spectral analysis results with a lower E4/E6 ratio suggesting the presence of HAs with high degree of aromaticity and condensation. Indications for the presence of hydroxyl, methyl, methylene, carbonyl, carboxyl, phenol, alcohol and amide groups were obtained from the FTIR spectrums of HAs. NMR spectral characteristics also confirm the presence of OH group as well as the presence of CH protons adjacent to C=X, were X can be any electronegative element. This also confirms the presence of carbonyl group which is also evident in the FTIR spectral studies. Presence of aliphatic regions slightly more dominated with long chain and/or alicyclic moieties rather than methyl groups was also inferred from the results of NMR. |
format |
Article in Journal/Newspaper |
author |
Mathew, Jennees Shaji, Aswathy Gopinath, Anu Krishnan, Kottekkatu Padinchati Louis, Sanil Vadakkan Pradeep, Anoop Pullarkkat |
author_facet |
Mathew, Jennees Shaji, Aswathy Gopinath, Anu Krishnan, Kottekkatu Padinchati Louis, Sanil Vadakkan Pradeep, Anoop Pullarkkat |
author_sort |
Mathew, Jennees |
title |
A characteristic study of humic acids isolated from Arctic fjord sediments |
title_short |
A characteristic study of humic acids isolated from Arctic fjord sediments |
title_full |
A characteristic study of humic acids isolated from Arctic fjord sediments |
title_fullStr |
A characteristic study of humic acids isolated from Arctic fjord sediments |
title_full_unstemmed |
A characteristic study of humic acids isolated from Arctic fjord sediments |
title_sort |
characteristic study of humic acids isolated from arctic fjord sediments |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2019 |
url |
http://library.arcticportal.org/2679/ http://library.arcticportal.org/2679/1/A1901003.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Advances in Polar Science Arctic Arctic Kongsfjord* Kongsfjorden Polar Science Polar Science |
genre_facet |
Advances in Polar Science Arctic Arctic Kongsfjord* Kongsfjorden Polar Science Polar Science |
op_relation |
http://library.arcticportal.org/2679/1/A1901003.pdf Mathew, Jennees and Shaji, Aswathy and Gopinath, Anu and Krishnan, Kottekkatu Padinchati and Louis, Sanil Vadakkan and Pradeep, Anoop Pullarkkat (2019) A characteristic study of humic acids isolated from Arctic fjord sediments. Advances in Polar Science, 30 (1). pp. 24-34. |
_version_ |
1784893669431574528 |