<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Comparative and complex characterisation of peat humic acids (HAs) isolated from peat profiles of different origin in Latvia was conducted. Elemental and functional analysis of the isolated HAs was made and their acidity and molecular weight were estimated. Spectral characterisation included UV-Vis, IR, electron spin resonance and fluorescence spectra. Structural characterisation of HAs was by both 1<italic>H and</italic>13C nuclear magnetic resonance spectra. 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. HAs isolated from peat of more recent origin were more similar to soil Has, while there was a greater degree of humification in part from older sources.</abstract>

Comparative and complex characterisation of peat humic acids (HAs) isolated from peat profiles of different origin in Latvia was conducted. Elemental and functional analysis of the isolated HAs was made and their acidity and molecular weight were estimated. Spectral characterisation included UV-Vis, IR, electron spin resonance and fluorescence spectra. Structural characterisation of HAs was by both 1H and13C nuclear magnetic resonance spectra. 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. HAs isolated from peat of more recent origin were more similar to soil Has, while there was a greater degree of humification in part from older sources.

Influence of the humification process on the properties of peat humic acids

Faculty of Geographical and Earth Sciences, University of Latvia, Raina bulv. 19, Rīga, LV-1586, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

{"article-title":"Influence of the humification process on the properties of peat humic acids"}

Comparative and complex characterisation of peat humic acids (HAs) isolated from peat profiles of different origin in Latvia was conducted. Elemental and...

Influence of the humification process on the properties of peat humic acids

Published Online: Jan 25, 2011

Page range: 167 - 173

DOI: https://doi.org/10.2478/v10046-010-0029-2

Keywords
humic acid, peat, Latvia, humification degree

This content is open access.

Influence of the humification process on the properties of peat humic acids

Published Online: Jan 25, 2011

Page range: 167 - 173

DOI: https://doi.org/10.2478/v10046-010-0029-2

Keywordshumic acid, peat, Latvia, humification degree

This content is open access.

Keywords
humic acid, peat, Latvia, humification degree