Authors: S.I. Zherebtsov, N.V. Malyshenko, D.A. Sokolov, Z.R. Ismagilov

Title of the article: Dependence of physiological activity of native and modified brown coal humic acids from structural and group composition

Year: 2016, Issue: 4, Pages: 107-113

Branch of knowledge: Chemical technology

Index UDK: 662.73+547.992.2+631.811.98

DOI: -

Abstract: The results of the study of the functional composition of humic acids (HA), brown coal, as well as HA samples extracted from the pre-alkylated and released bitumen from coals are presented. HA activity is shown as crop growth promoters. Samples of coal and HA characterized by instrumental methods: NMR-spectroscopy, elemental and technical analysis. It was determined that the physiological activity of the HA is directly proportional to structural parameter: the degree of aromaticity. It is shown that sequential alkylation and release bitumen from lignite leads to an increase in the content of aromatic structures in the HA from modified sources. These HA are similar in composition to highly active natural humic substances from naturally-oxidized lignite coal and exhibit enhanced biological activity.

Key words: lignite brown coal humic acids physiological activity

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