, DIFFERENTIATION OF HYDROPHOBIC AND HYDROPHILIC COMPONENTS OF HUMIC SUBSTANCES IN THE SELENGA RIVER DELTA SOILS // Nature of Inner Asia. - 2022. №4(22). . - С. 59-67.

DIFFERENTIATION OF HYDROPHOBIC AND HYDROPHILIC COMPONENTS OF HUMIC SUBSTANCES IN THE SELENGA RIVER DELTA SOILS

The work was carried out within the framework of the state assignment No. 121030100228–4.

DOI: 10.18101/2542-0623-2022-4-59-67 UDK: 631.417.7

The article considers soil humic substances as a multicomponent system of amphiphilic (showing both hydrophobic and hydrophilic properties) substances. We have carried out fractionation of humic substances from soils of various genesis (meadow and meadow-boggy) by hydrophobic interaction chromatography on octyl sepharose CL-4B. This method fractionates humic and fulvic acids into separate components that differ in their ability to enter into hydrophobic interactions with the gel matrix. The results show that a higher percentage of hydrophobic macromolecules has been found in the humic substances of meadow soils than in other samples (humic acids of meadow-boggy soils and fulvic acids). The fulvic acid sample has shown weaker hydrophobic interactions than the humic acids.

amphiphilic components, humic substances, meadow soils, meadow-boggy soils, Selenga River delta.