Potentiometric and spectroscopic study of uranyl complexation with humic acids

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Authors	LUBAL Přemysl FETSCH David ŠIROKÝ David LUBALOVÁ Milada ŠENKÝŘ Jaroslav HAVEL Josef
Year of publication	2000
Type	Article in Periodical
Magazine / Source	Talanta
MU Faculty or unit	Faculty of Science
Citation
Web	http://www.elsevier.com/locate/talanta
Field	Analytic chemistry
Keywords	Humic acids; Uranyl; Stability constants; Uranyl ion selective electrode
Description	By potentiometric study using a specific uranyl ion-selective electrode, the formation of 1:1 and 1:2 (metal:ligand) complexes of uranyl with various humic acids (HAs) was found. The conditional stability constants were calculated using the LETAGROP-ETITR program. Possible structures of the complexes are proposed. Stability constants were found to be rather high indicating that immobilzed HA can be used, for example, to remove traces of uranyl from waste waters.
Related projects:	Structure and character of bonding, properties and analysis of synthetic and natural molecular ensembles