Characterization of humic acids from tundra soils of northern Western Siberia by electron paramagnetic resonance spectroscopy
- Authors: Chukov S.N.1, Ejarque E.1,2, Abakumov E.V.1
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Affiliations:
- St. Petersburg State University
- WasserCluster Lunz—Biologische Station
- Issue: Vol 50, No 1 (2017)
- Pages: 30-33
- Section: Soil Chemistry
- URL: https://journals.rcsi.science/1064-2293/article/view/223835
- DOI: https://doi.org/10.1134/S1064229317010057
- ID: 223835
Cite item
Abstract
Humic acids from polar soils—cryozems (Cryosols), gleyezems (Gleysols), and peat soils (Histosols)—have been studied by electron paramagnetic resonance spectroscopy. First information was acquired on the content of free radicals in humic acids from polar soils for the northern regions of Western Siberia (Gydan Peninsula, Belyi Island). It was found that polar soils are characterized by higher contents of free radicals than other zonal soils. This is related to the lower degree of humification of organic matter and the enhanced hydromorphism under continuous permafrost conditions. The low degree of organic matter humification in the cryolithozone was confirmed by the increased content of free radicals as determined by electron paramagnetic resonance, which indicates a low biothermodynamic stability of organic matter.
About the authors
S. N. Chukov
St. Petersburg State University
Author for correspondence.
Email: s_chukov@mail.ru
Russian Federation, St. Petersburg, 199178
E. Ejarque
St. Petersburg State University; WasserCluster Lunz—Biologische Station
Email: s_chukov@mail.ru
Russian Federation, St. Petersburg, 199178; Lunz am See
E. V. Abakumov
St. Petersburg State University
Email: s_chukov@mail.ru
Russian Federation, St. Petersburg, 199178