Abstract
Peripheral amino acid fragments of humic and fulvic acid molecules from tundra soils have been identified and quantified. A significant weight fraction of amino acids has been found in humic acid preparations, which exceeds their content in fulvic acids. Features of the amino acid composition of humic substances along the soil profile and depending on the degree of hydromorphism and the proportions of different (neutral, basic, acidic, cyclic) groups in amino acids have been revealed. The molar ratio between the hydroxy and heterocyclic amino acids reflects the degree of humification of the soil.
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Original Russian Text © R.S. Vasilevich, V.A. Beznosikov, 2015, published in Pochvovedenie, 2015, No. 6, pp. 685–692.
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Vasilevich, R.S., Beznosikov, V.A. Amino acid composition of humic substances in tundra soils. Eurasian Soil Sc. 48, 593–599 (2015). https://doi.org/10.1134/S1064229315060125
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DOI: https://doi.org/10.1134/S1064229315060125