Utilization of flow-through electrochemical coulometry in study of dissociation ability of humic acids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F14%3APU110587" target="_blank" >RIV/00216305:26310/14:PU110587 - 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

Utilization of flow-through electrochemical coulometry in study of dissociation ability of humic acids

Popis výsledku v původním jazyce

Humic acids are operationally defined as the fraction of humic substances which is not soluble under acidic conditions. This does not mean, however, that their solid particles easily dissolve in water. Experimental results suggest that the dissolving ofsolid humic acids in an aqueous environment is more complex than the conventional solubility behaviour of sparingly soluble solids. In this work, the pKa value of the dissolved humic acid fraction is calculated on the basis of results of flow-through electrochemical coulometry in combination with potentiometry. While the potentiometric pH-measurement is used for determination of dissociated functional groups of humic acids, whole amount of dissolved humic acids can be measured using the coulometry. Theaim of this work is to characterize the dissociation behaviour of selected humic samples by means of dissociation constants using these methods. It is shown that dissociation degree is influenced by content of dissolved humic acids. The o

Název v anglickém jazyce

Utilization of flow-through electrochemical coulometry in study of dissociation ability of humic acids

Popis výsledku anglicky

Humic acids are operationally defined as the fraction of humic substances which is not soluble under acidic conditions. This does not mean, however, that their solid particles easily dissolve in water. Experimental results suggest that the dissolving ofsolid humic acids in an aqueous environment is more complex than the conventional solubility behaviour of sparingly soluble solids. In this work, the pKa value of the dissolved humic acid fraction is calculated on the basis of results of flow-through electrochemical coulometry in combination with potentiometry. While the potentiometric pH-measurement is used for determination of dissociated functional groups of humic acids, whole amount of dissolved humic acids can be measured using the coulometry. Theaim of this work is to characterize the dissociation behaviour of selected humic samples by means of dissociation constants using these methods. It is shown that dissociation degree is influenced by content of dissolved humic acids. The o

Druh

O - Ostatní výsledky

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/LO1211" target="_blank" >LO1211: Centrum materiálového výzkumu na FCH VUT v Brně - udržitelnost a rozvoj</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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