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Analysis of institutional authors

Solov'Ev, T MCorresponding Author

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May 30, 2025
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Structure Features of Humic Acids Isolated from Oxidized Kuzbass Coal and Yakutia Brown Coal

Publicated to: Solid Fuel Chemistry. 59 (1): 1-9 - 2025-02-01 59(1), DOI: 10.3103/S0361521924700447

Authors:

Solov'ev, T M; Shaikhislam, G; Epshtein, S A; Kondrat'ev, N N; Sivtsev, S I; Sokolova, M D
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Affiliations

Natl Univ Sci & Technol MISiS NUST MISiS, Moscow 119049, Russia - Author
Russian Acad Sci, Fed Res Ctr, Inst Oil & Gas Problems, Siberian Branch,Yakut Sci Ctr, Yakutsk 677007, Russia - Author

Abstract

The article presents the results of a study of the structure of humic acids isolated from brown coals of Yakutia and oxidized coals of Kuzbass using nuclear magnetic resonance spectroscopy and IR spectroscopy. Based on the C-13 NMR spectra, their structural parameters, such as the aromaticity index and hydrophobicity index, were calculated. It was noted that the humic acids of oxidized coals were characterized by higher values of the aromaticity and hydrophobicity indices than those of the humic acids of brown coals. The results of titrimetric analysis showed that humic acids isolated from oxidized coals were characterized by a higher concentration of carboxyl and carbonyl groups. Based on the study, it was suggested that the humic acids of brown coals from Yakutia will have stronger growth-stimulating properties than the humic acids of oxidized coals from Kuzbass.
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Keywords

Biological-activityBrown coalFunctional compositioHumic acidsIr spectroscopyNmr spectroscopyOrganic-matterOxidized coalState nmr-spectroscopySubstancesTitratio

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Solid Fuel Chemistry, and although the journal is classified in the quartile Q4 (Agencia WoS (JCR)), its regional focus and specialization in Chemistry, Multidisciplinary, give it significant recognition in a specific niche of scientific knowledge at an international level.

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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-08:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 2 (PlumX).
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Russia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Atienza Vanacloig, Vicente Luis) .

the author responsible for correspondence tasks has been Atienza Vanacloig, Vicente Luis.

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Awards linked to the item

We are grateful to the Center for Collective Use of the Federal Research Center "Yakut Scientific Center of the Siberian Branch of the Russian Academy of Sciences" for the opportunity to conduct spectroscopic studies using the scientific equipment of this center.
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