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Characterization of humic substances extracted from South-Moravia lignite
Humic substances extracted from lignite were divided to several fractions with various molecular weight. Individual fractions were characterized using UV/VIS and FT-IR spectrophotometry....
CF - Fyzikální chemie a teoretická chemie
- 2001 •
- D
Rok uplatnění
D - Stať ve sborníku
Comparsion methods of fractionation humic substances in forest soils
easily than other. Fractionation of humic substances is able to separate to three components, fluvic acid, humic acid and humin. Soil humic substances fractionation. Fractionation
DF - Pedologie
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
Characterization of Soil Humic Substances by UV-VIS and SFS Spectroscopy Characterization of Soil Humic Substances by UV-VIS and SFS Spectroscopy Characterization of Soil Humic Substances by UV-VIS
In this paper we followed UV-VIS and SFS spectral curves and indexes of soil humic subctances (HS) in Modal Chernozem, Luvic Chernozem and Gleyic Luvisol (Czech properties, structure and quality. Correlation between HS fractional co...
DF - Pedologie
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Evaluation of lignite humic substances oxidation stability by DSC induction period measurement
Induction period of several humic fractions were measured by DSC in oxygen atmosphere. The fractions were obtained from lignite-derived humic acids by controlled oxidation. results are discussed from the viewpoint ...
CF - Fyzikální chemie a teoretická chemie
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Light Scattering Techniques as a Key for Accessing of the Molecular Weight and Size of Humic Substances Originating from Different Source Materials
on the aggregation, conformation changes and colloidal stability of soluble fractions of humic substances in aqueous solutions. For these purposes, the behaviour of various soluble humic fractions (mainly...
Physical chemistry
- 2021 •
- O
Rok uplatnění
O - Ostatní výsledky
Share of heavy metals in separate fractions of humic substances in polluted soil
separate fractions of humic substances and to assess the mobility and bioavailability. Cadmium was bound almost entirely on fulvic acids; the amount bound on humic acids was negligible. Zinc was bound mainly in th...
DF - Pedologie
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Distribution of heavy metals between humus fractions in a heavily polluted soil
fractions of humic substances and to assess the mobility and bioavailability. Molar ratio between metal and carbon of the particular fraction humic substances than to humic acids. The hi...
DF - Pedologie
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Comparison of extractable soil carbon and dissolved organic carbon by their molecular characteristics
chromatography. Elution curves of all humic substances were characteristic by two peaks with predominant low-molecular fraction. Mr and Mw values of aquatic humic substances were 5.9 and 7.9 kDa, respecti...
EH - Ekologie – společenstva
- 2011 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
New possibility for characterization of dissociation behaviour of supramolecular electrolytes: results obtained for the International Humic Substances Society standard and reference samples
Background: Humic substances can be considered as polyelectrolytes of humic substances dissolved in water are the most active ones and determinative: Standards and reference samples of International Humic ...
Soil science
- 2021 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Molecular arrangement and secondary structure of humic substances
Humic acids were fractionated using universal buffer solutions in the range of the zeta potential, conductivity and pH values. Fractionated humic acids had chromatography were used to investigate the molecular orga...
Physical chemistry
- 2016 •
- D
Rok uplatnění
D - Stať ve sborníku
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