Structural Group Composition of Humic Acids in Brown Coal and Their Physiological Activity
S. I. ZHEREBTSOV1, N. V. MALYSHENKO1, O. V. SMOTRINA1, S. YU. LYRSHCHIKOV2, L. V. BRYUKHOVETSKAYA1, and Z. R. ISMAGILOV1,3
1Institute of Coal Chemistry and Material Science, Siberian Branch of the Russian Academy of Sciences, Sovetskiy Pr.18, Kemerovo 650000 (Russia)
2Kemerovo Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Pr. Sovetskiy 18, Kemerovo 650000 (Россия)
3Kuzbass State Technical University, Ul. Demyana Bednogo 4, Kemerovo 650000 (Russia)
Keywords: бурый уголь, гуминовые кислоты, физиологическая активность, brown coal, humic acids, physiological activity
Abstract
The functional composition of humic acids (HA) in brown coal and its natural oxidized form was studied, as well as their activity as growth-promoting agents for agricultural crops. The samples of coal and HA were characterized using instrumental methods (NMR, IR, EPR spectroscopy), elemental and technical analyses were carried out. It was established that the physiological activity of HA is directly proportional to a number of structural parameters: aromaticity factor, hydrophilic-hydrophobic parameter and the ratio of aromatic to aliphatic fragments in the organic mass of HA.
|
