Earth’s Cryosphere, 2017, Vol. XXI, No. 2, p. 62-71

INVESTIGATION OF HUMIC SUBSTANCES FROM PERMAFROST SEDIMENTS USING DIAGRAMS OF OPTICAL PARAMETERS

L.T. Shirshova, D.A. Gilichinsky , N.V. Ostroumova, A.M. Yermolayev

Institute of Physicochemical and Biological Problems in Soil Science, RAS,
Moscow region, Pushchino, 142290, Russia; lt_shirshova@list.ru

Humic substances of permafrost sediments have been isolated using sequential resin-alkali extraction and investigated by the electron absorption and fluorescence spectroscopy methods. The results of spectral analysis are presented in the form of diagrams of optical parameters, allowing humic fractions of different degrees of chemical maturity to be identified and changes in their state at thawing of sediments to be traced.

Permafrost, sediments, Arctic, humic substances, electron spectroscopy, optical parameters, diagrams

DOI: 10.21782/EC2541-9994-2017-1(62-71)