Maris Klavins, Oskars Purmalis
Proceedings of the 14th International Peat Congress
humic-acid, humification-degree, latvia, peat
Theme IV. Chemical, physical and biological characteristics of peat
Comparative and complex characterization of peat humic acids (HAs) isolated from peat profiles of different origin in Latvia was done. Elemental and functional analysis of the isolated HAs was done, their acidity and molecular weights estimated. Properties of HAs isolated from the Latvian peat were compared with HA from other sources (soil, water, coal and synthetic humic substances). Major properties of peat HAs depended on their origin, indicating the importance of humification processes.