DBPapers
DOI: 10.5593/sgem2017/32/S13.055

PHYSICO-CHEMICAL PROPERTIES OF PEAT HUMIC ACIDS (MIDDLE TAIGA OF WESTERN SIBERIA)

M. P. Sartakov, N. V. Chukhareva, T. Korotchenko
Tuesday 12 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7408-05-8 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 32, 421-428 pp, DOI: DOI: 10.5593/sgem2017/32/S13.055

ABSTRACT

The article presents the results of humic acid macromolecule study based on the instrumental approaches. Humic acids were extracted from various types of peat (0-20 cm) found within the Western Siberia. The obtained results provide insight into the structure and composition of peat humic acids. The obtained results definitely indicate that elemental composition, thermodynamic stability, and NMR13С spectrometry of humic acids are basically a consequence of their physico-chemical properties which, in its turn, depend on the type of peat, its botanical composition, decomposition degree, and peat-forming conditions. The revealed peculiar character of humic acids extracted from upper layers of peat significantly enriches the humification theory with the experimental data on the process of humic acid macromolecule formation from decomposed organic matter. The differences in thermogram contours, NMR13С spectrometry, and elemental composition of sphagnum peat, sedge peat, and woody peat were identified. The findings of the current study contributed to the solution of one of the most critical humic acid problems - to prove the link between the structure of humic acids and their forming conditions.

Keywords: humic acids, Western Siberia, elemental composition, thermal analysis, NMR13С spectroscopy

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