Utilization of In-electrode Coulometric Titration in Humic Research
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F11%3APU94240" target="_blank" >RIV/00216305:26310/11:PU94240 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Utilization of In-electrode Coulometric Titration in Humic Research
Original language description
In this work, the in-electrode coulomeric titration is used for analysis of humic acids in aqueous solutions. The method is based on the galvanostatical reduction of splitting off hydrogen ions at a suitable potential. The method was valited using simpleorganic acids (acetic acid, benzoic acid, citric acid, oxalic acid, phthalic acid and salicylic acid). It was found that efficiency of the method depends on acid concentration and strength. The limits are concentration of 20 mmol.dm-3 and pKa 5. Humic acids are analysed as extract in solution of sodium sulfate (1,5 % wt.). The efficiency of galvanostatic reduction depended on concentration of humic acids as in previous case. The limit obtained for used sample was 20 g of humic acids per litre. It is well-known that humic acids are soluble in neutral aqueous solutions only partially1. Their carboxylic groups have various strength which influences their solubility and activity in natural systems. Humic fractions rich with carboxylic grou
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/ED0012%2F01%2F01" target="_blank" >ED0012/01/01: Centres for materials research at FCH BUT</a><br>
Continuities
O - Projekt operacniho programu
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů