ELECTRONIC PARAMAGNETIC RESONANCE OF HUMIC AND HYMATOMELANIC ACIDS IN SAPROELS OF THE LAKE OF THE MIDDLE OB RIVER

The paper presents the results of a study of the paramagnetic activity of humic and hymatomelanic acids extracted from sapropels of ten small lakes on the right bank of the Ob River and ten small lakes on the left bank of the Ob River (Western Siberia). Quantitative studies were carried out by two m...

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Bibliographic Details
Published in:chemistry of plant raw material
Main Authors: Сартаков, Михаил Петрович, Осницкий, Евгений Михайлович, Шпынова, Наталья Валерьевна, Комиссаров, Игорь Дисанович
Format: Article in Journal/Newspaper
Language:Russian
Published: Altai State University 2022
Subjects:
humic acids
hymatomelanic acids
sapropel
electron paramagnetic resonance
middle taiga
Western Siberia
гуминовые кислоты
гиматомелановые кислоты
сапропель
электронный парамагнитный резонанс
средняя тайга
Западная Сибирь
ob river
taiga
Siberia
Online Access:http://journal.asu.ru/cw/article/view/9450
https://doi.org/10.14258/jcprm.2022029450
Description
Summary:The paper presents the results of a study of the paramagnetic activity of humic and hymatomelanic acids extracted from sapropels of ten small lakes on the right bank of the Ob River and ten small lakes on the left bank of the Ob River (Western Siberia). Quantitative studies were carried out by two methods: the ABS spins method and the method using a double resonator with respect to TEMPO. A comparison of the two methods is presented. The values of the concentration of paramagnetic cents per gram of humic and hymatomelanic acids, as well as the molecular weights of the conditional paramagnetic molecules of humic and hymatomelanic acids were calculated. Based on the results obtained, a conclusion was made about the greater paramagnetic activity of humic acids relative to hymatomelanic acids. Differences in the paramagnetic activity of humic acids and hymatomelanic acids have been established. Three samples from lakes on the right bank of the Ob River and one sample from a lake on the left bank of the Ob River have the greatest differences in paramagnetic activity between HAs and their corresponding HMCs. The concentration of paramagnetic centers in the HAs of these samples is six times higher than in the corresponding MMCs. The contribution of the conjugated aromatic component to the structure of the macromolecules of these HAs is the greatest. В работе представлены результаты исследования парамагнитной активности гуминовых и гиматомелановых кислот, извлеченных из сапропелей десяти малых озер правого берега реки Оби и десяти малых озер левого берега реки Оби (Западная Сибирь). Количественные исследования проведены двумя методами: методом ABS spins и методом с использованием двойного резонатора относительно ТЕМПО. Представлено сравнение двух методов. Рассчитаны значения концентрации парамагнитных центов на грамм гуминовых и гиматомелановых кислот, а также молекулярные массы условных парамагнитных молекул гуминовых и гиматомелановых кислот. На основании полученных результатов сделан вывод о большей парамагнитной ...

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