Light Scattering Techniques as a Key for Accessing of the Molecular Weight and Size of Humic Substances Originating from Different Source Materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F21%3APU141740" target="_blank" >RIV/00216305:26310/21:PU141740 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Light Scattering Techniques as a Key for Accessing of the Molecular Weight and Size of Humic Substances Originating from Different Source Materials

Popis výsledku v původním jazyce

Abstract. This contribution is focused on the utilization of light scattering techniques (dynamic, static and electrophoretic) for purposes of an in-depth study 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 humic and fulvic) was studied and compared. The heterogeneity of humic molecules in their aqueous solutions was firstly necessary to decrease before their subsequent instrumental light scattering characterization. For these purposes, the methods of size exclusion chromatography and asymmetric flow-field flow fractionation were used. The obtained results showed similar basic structural features in the case of the individual humic acids isolated from different source materials as well as between the various studied fulvic acids. Different aggregation behaviour was observed in the case of the commertial lignohumate sample.

Název v anglickém jazyce

Light Scattering Techniques as a Key for Accessing of the Molecular Weight and Size of Humic Substances Originating from Different Source Materials

Popis výsledku anglicky

Abstract. This contribution is focused on the utilization of light scattering techniques (dynamic, static and electrophoretic) for purposes of an in-depth study 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 humic and fulvic) was studied and compared. The heterogeneity of humic molecules in their aqueous solutions was firstly necessary to decrease before their subsequent instrumental light scattering characterization. For these purposes, the methods of size exclusion chromatography and asymmetric flow-field flow fractionation were used. The obtained results showed similar basic structural features in the case of the individual humic acids isolated from different source materials as well as between the various studied fulvic acids. Different aggregation behaviour was observed in the case of the commertial lignohumate sample.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GJ20-28208Y" target="_blank" >GJ20-28208Y: Studium vlivu aplikace biouhlu na transformaci půdní organické hmoty – od multidisciplinární metodiky po interpretaci na molekulární úrovni</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů