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Chemistry for Sustainable Development

2009 year, number 1

Humic substances of brown coal from the Sergeevskoye deposit

L. P. Noskova
Keywords: humic acids, fulvo acids, brown coal, extraction, functional composition
Pages: 61-65

Abstract

Chemical composition of humic substances from brown coal of the Sergeevskoye deposit is studied by means of elemental analysis, IR and 13С NMR spectroscopy. A comparative analysis of the fragment composition of coal fractions is carried out. It is shown that extraction of humic acids is accompanied by oxidation-reduction transformations. The data on the polyfunctional composition and potential of physiological activity of humic substances provide evidence of the possibility to use coal from Sergeevskoye as a source of humic fertilizers.