PROPERTIES OF PEAT HUMIC SUBSTANCES FROM LATVIA DEPENDING ON THEIR ORIGIN

摘要

The acidity, elemental, functional and spectral characteristics of peat humic substances isolated from peat of different origin in Latvia are described. Structure of humic substances has been analyzed using permanganate oxidation. In the permanganate oxidation products the main products of all humic substances are products possibly originating form aromatic structures. Humic substances isolated from peat of more recent origin are more similar to humic substances from soil, but for humic substances originating from older sources greater degree of humification is evident.