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Antioxidants in Humic Acids of Various Origins

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Abstract

With the use of a voltammetric method, we found that humic acids (HAs) of different origin extracted from soils, sapropels, peats, and brown coals exhibit pronounced antioxidant properties. According to the results of a correlation analysis, it was shown that the antioxidant activity of HAs depends on the concentration of phenolic hydroxyls and carboxyl groups in a range of pH 10–5.5. Peat HAs were characterized by a maximum antioxidant activity.

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Correspondence to N. V. Yudina, A. V. Savel’eva or E. V. Linkevich.

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Translated by V. Makhlyarchuk

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Yudina, N.V., Savel’eva, A.V. & Linkevich, E.V. Antioxidants in Humic Acids of Various Origins. Solid Fuel Chem. 56, 253–258 (2022). https://doi.org/10.3103/S0361521922040097

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  • DOI: https://doi.org/10.3103/S0361521922040097

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