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.
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