Study of the Biological Activity of Humine Substances for the Creation of Preparations against Desertification
S. I. ZHEREBTSOV1, N. V. MALYSHENKO1, K. S. VOTOLIN1, V. A. ANDROKHANOV2, D. A. SOKOLOV2, J. DUGARJAV3, Z. R. ISMAGILOV1,4
1Institute of Coal Chemistry and Material Science, Federal Research Centre of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
E-mail: sizh@yandex.ru
2Institute of Soil Science and Agrochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, Ulaanbaatar, Mongolia
4Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: desertification, humic acids, structural parameters, biological activity
Pages: 138-146
Abstract
Native and modified humic acids (HA) isolated from brown coals of Russia and Mongolia were studied. Their composition was characterized using technical and elemental analyses, and 13C NMR (CPMAS) spectroscopy. A destructive alkylation of humic acids with butanol followed by debitumination, which changes the structural group composition of HA has been held. The biological activity of humic preparations in the form of sodium and potassium humates is investigated depending on the structural group parameters: the degree of aromaticity fа, hydrophilic-hydrophobic parameter fh/h and parameter reflecting the ratio of aromatic and aliphatic fragments of organic mass of humic acids far/al. It is shown that an increase in the degree of aromaticity HA leads to an increase in their biological activity.
DOI: 10.15372/CSD2019121
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