Abstract
Granulodensimetric soil fractions isolated from chernozem, gray forest soil, and soddy-podzolic soil have been studied using a scanning electron microscope. The studies confirmed that the light fractions with density <1.8 g/cm3 and particle size >53 μm mainly consists of plant residues; however, they also contain mineral particles covered with relatively thick organomineral films and carbonaceous substances. It has been shown that the clay fraction consists of a mixture of ultramicroaggregates of clay minerals ≤1 μm in size covered with a hydrophilic organomineral gel, and the organic matter of the residual fraction includes a stable highly aromatized (lignin-like) material, as well as coals and coal-like materials.
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Original Russian Text © G.N. Fedotov, Z.S. Artem’eva, 2015, published in Pochvovedenie, 2015, No. 1, pp. 61–70.
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Fedotov, G.N., Artem’eva, Z.S. Colloidal component of granulodensimetric soil fractions. Eurasian Soil Sc. 48, 54–62 (2015). https://doi.org/10.1134/S1064229315010044
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DOI: https://doi.org/10.1134/S1064229315010044