Open AccessMolecular-mass distribution of tundra soils humic substances from the European northeast of Russia
Author(s) -
Roman Vasilevitch,
Е. Д. Лодыгин,
В. А. Безносиков
Publication year - 2015
Publication title -
biological communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.195
H-Index - 5
eISSN - 2587-5779
pISSN - 2542-2154
DOI - 10.21638/spbu03.2015.409
Subject(s) - tundra , gleysol , soil water , fraction (chemistry) , chemistry , mass fraction , molar mass distribution , molecular mass , environmental chemistry , humic acid , soil science , environmental science , chromatography , organic chemistry , arctic , biology , ecology , fertilizer , enzyme , polymer
It is established that the humic acids (HA) of tundra soils contain three fractions with a different molecular weight: ≥600, 62–83 and 2,6–5,3 kDa; fulvic acids (FA) — one fraction — 1,5–4,4 kDa. The maintenance of a low molecular weight fraction of HA considerably exceeds a share of medium and high molecular weight fractions. Reclamation of tundra surface-gley soils leads to decrease of a share of high molecular weight and to increase of a share of low molecular weight fraction as a part of HA. Correlative dependences between the contents of HA molecular weight fractions with parameters of HA are established. Refs 16. Figs 1. Tables 3.