The Impact of Methylation of IHSS Humic Acids on the Reactivity Studied by Diffusion Techniques

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Impact of Methylation of IHSS Humic Acids on the Reactivity Studied by Diffusion Techniques

Popis výsledku v původním jazyce

Non-stationary diffusion processes and the diffusion cell techniques of basic organic dyes (Methylene Blue and Rhodamine 6G) was studied in supported hydrogel matrix with different content of humic acids (standard samples of International Humic Substances Society ? Leonardite). A simple spectrophotometric method was utilized in the in situ measurement of dye concentration at different distances from the boundary by non stationary diffusion in cuvettes. The rate of interactions of humic acids in diffusion cells was compared by fundamental diffusion parameters such as effective diffusion coefficients, the lag time and the binding capacity of humic acids. The effect of modification (methylation) of humic acids was studied by both diffusion techniques. Carboxylic groups became occupied by methyl groups during methylation, so the sorption capacity of modified sample should be lower. The results confirmed the strong immobilization of chosen diffusion probes caused by their sorption on humic

Název v anglickém jazyce

The Impact of Methylation of IHSS Humic Acids on the Reactivity Studied by Diffusion Techniques

Popis výsledku anglicky

Non-stationary diffusion processes and the diffusion cell techniques of basic organic dyes (Methylene Blue and Rhodamine 6G) was studied in supported hydrogel matrix with different content of humic acids (standard samples of International Humic Substances Society ? Leonardite). A simple spectrophotometric method was utilized in the in situ measurement of dye concentration at different distances from the boundary by non stationary diffusion in cuvettes. The rate of interactions of humic acids in diffusion cells was compared by fundamental diffusion parameters such as effective diffusion coefficients, the lag time and the binding capacity of humic acids. The effect of modification (methylation) of humic acids was studied by both diffusion techniques. Carboxylic groups became occupied by methyl groups during methylation, so the sorption capacity of modified sample should be lower. The results confirmed the strong immobilization of chosen diffusion probes caused by their sorption on humic

Druh

O - Ostatní výsledky

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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