Electrophoretic Characterization of Thorium Humate Complexes in Aqueous Solutions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F08%3A00146298" target="_blank" >RIV/68407700:21340/08:00146298 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Electrophoretic Characterization of Thorium Humate Complexes in Aqueous Solutions

Original language description

Free-liquid electrophoresis was used to study thorium complexation with Aldrich humic acid (HA) in aqueous solutions of 0.01M (NaClO4 + HClO4 or NaOH) in dependence on pH, concentration of thorium (10-9 - 10-5 M, labelled with 234Th) and HA (0.1-10 mg/L). The abundances and the mean electrophoretic mobilities of thorium humate complexes were calculated from the electrophoretic mobilities of thorium measured. It has been found that negatively charged humate complexes dominate in the solutions of pH 2-11containing 1-10 mg/l HA and up to 0.001 M HCO3-. Experimental evidence was given of the formation of Th(OH)4HAy- complex at pH 8-11 and its stability constant was determined. New conclusions about spontaneous association of HA molecules at pH 2-6 and about binding of thorium by non-dissociated carboxyl groups of HA were drawn.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

CH - Nuclear and quantum chemistry, photo chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

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

Article name in the collection

NRC7 CD Proceedings

ISBN

978-963-9319-81-3

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

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Publisher name

Hungarian Academy of Sciences

Place of publication

Budapest

Event location

Budapest

Event date

Aug 24, 2008

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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