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Stability constants of uranium(IV)-α-isosaccharinic acid and gluconic acid complexes
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Peter Warwick
Veröffentlicht/Copyright:
25. September 2009
Summary
Conditional and pH independent stability constants have been determined for U(IV) α-isosaccharinic acid (ISA) and gluconic acid (Gl) complexes, under anaerobic and carbonate-free conditions, from pH 3 to 14. The constants are needed for nuclear waste repository performance assessment purposes. The constants were obtained by developing an approach based on the solubility product of amorphous UO2·2H2O. The derived pH independent log β values for U(OH)4ISA and U(OH)4Gl were 49±2 and 50±1 respectively.
Published Online: 2009-9-25
Published in Print: 2004-12-1
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- Evidence for the formation of sodium hassate(VIII)
- Study of nitrate complex formation with trivalent Pm, Eu, Am and Cm using a solvent extraction technique
- Hydrolysis of Np(IV) and Pu(IV) and their complexation by aqueous Si(OH)4
- Reduction kinetics of Np(VI) by n-butyraldehyde in tributyl phosphate diluted with n-dodecane
- Speciation study on complex formation of uranium(VI) with phosphate and fluoride at high temperatures and pressures by time-resolved laser-induced fluorescence spectroscopy
- Stability constants of uranium(IV)-α-isosaccharinic acid and gluconic acid complexes
- Uranium(VI) complexes with sugar phosphates in aqueous solution
- Uranium kernel formation via internal gelation
- Investigation of evaporation characteristics of polonium and its lighter homologues selenium and tellurium from liquid Pb-Bi-eutecticum
- Synergistic extraction of Ce(III), Eu(III) and Tm(III) with a mixture of picrolonic acid and tributylphosphine oxide in chloroform
- Synthesis of malonic acid-functionalized Amberlite XAD-4 and its use in solid phase extraction/preconcentrative separation of thorium(IV)
- INAA methodology using low power reactor for the characterization of IAEA-433; Coastal marine sediment as a potential reference material
- Determination of natural radioactivity in building materials used in the Karachi area by γ-ray spectrometry and INAA
- Improved targetry and production of iodine-124 for PET studies
