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Biological Activity of Native and Modified Humic Acids

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Abstract

The samples of native and hydrogen peroxide–modified humic acids (HAs) separated from brown coals of the Tisul’skoe deposit in the Kansk-Achinsk Basin were obtained. The HA samples were characterized by instrumental methods: elemental and technical analysis and EPR spectroscopy. The modification of HAs affected the structural-group composition and decreased the concentration of paramagnetic centers (PMCs). The biological activity of native and modified humic acids was evaluated by phytotesting with the use of Iren varietal wheat seeds as an example. The highest biological activity was manifested at an HA concentration of 0.005%. A tendency toward a decrease in the biological activity with a decrease in the concentration of PMCs was revealed.

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Funding

This work was carried out at the Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences within the framework of a state contract (project no. AAAA-A17-117041910148-9) and supported by the Russian Foundation for Basic Research (project no. 18-55-91033)..

The study was carried out with the use of the equipment of the Center of Collective Use at the Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences.

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Authors and Affiliations

  1. Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, 650000, Kemerovo, Russia

    S. I. Zherebtsov, N. V. Malyshenko, K. S. Votolin, K. M. Shpakodraev & Z. R. Ismagilov

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  1. S. I. Zherebtsov
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  2. N. V. Malyshenko
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  3. K. S. Votolin
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  4. K. M. Shpakodraev
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  5. Z. R. Ismagilov
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Corresponding authors

Correspondence to S. I. Zherebtsov, N. V. Malyshenko, K. S. Votolin, K. M. Shpakodraev or Z. R. Ismagilov.

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Translated by V. Makhlyarchuk

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Zherebtsov, S.I., Malyshenko, N.V., Votolin, K.S. et al. Biological Activity of Native and Modified Humic Acids. Solid Fuel Chem. 54, 191–195 (2020). https://doi.org/10.3103/S0361521920040096

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  • DOI: https://doi.org/10.3103/S0361521920040096

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