Formation of Humic Colloids in Aqueous Solutions at Different pH Values

Autor:	E. V. Linkevich, N. V. Yudina, A. V. Savel’eva
Rok vydání:	2020
Předmět:	Aqueous solution Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology complex mixtures 01 natural sciences 0104 chemical sciences Particle radius Colloid Chemical engineering Physical and Theoretical Chemistry 0210 nano-technology Macromolecule
Zdroj:	Russian Journal of Physical Chemistry A. 94:742-747
ISSN:	1531-863X 0036-0244
DOI:	10.1134/s0036024420040093
Popis:	The effect the mechanochemical modification of humic acids has on their surface-active and acid–base properties is studied. The dependence of the surface activity of humic acids on structural changes, concentration, and the pH of the medium are determined. It is shown that in an alkaline medium, associates of humic acids are characterized by the minimum average particle radius, an increased degree of dissociation of acidic groups, and enhanced surface activity at the gas–liquid interface. A neutral or acidic medium facilitates aggregation and an increase in the size of macromolecules of humic acids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12e5b306447bacde5c7384d762308fc1 https://doi.org/10.1134/s0036024420040093 Zobrazit plný text záznamu Full text from SpringerLink