Electron Spin Resonance of Humic and Hymatomelanic Acids, Lipids and Initial Brown Coal of the Nether-Polar Urals.

This work presents the results of studying paramagnetic activity of humic and hymatomelanic acids, lipids and initial brown coal of the Otoryinsk field in the Nether-Polar Urals. Two methods were used for quantitative research: the method of ABS spins and the double resonator method relative to TEMPO. The two methods were compared. Concentrations of paramagnetic cents per gram and molecular weights of assumed paramagnetic molecules were calculated. Based on the results obtained, it was concluded that humic acids have higher paramagnetic activity than hymatomelanic acids. The differences in paramagnetic activity of the studied samples were identified. [ABSTRACT FROM AUTHOR]