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Study of the Speciation in the System UO22+–SO42––H2O by Means of the UV-VIS Spectrophotometry

  • Jakub Višňák
  • Aleš Vetešník
  • Karel Štamberg
  • Jiří Bok
Chapter
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

This work estimates speciation characteristics of the UO22+–SO42––H2O system by means of the analysis of UV-VIS absorption spectra of series of aqueous solutions of uranium(VI) (total molar concentration 0.05 mol·dm–3), sodium sulfate (varying concentration from 0 to 1.3 mol·dm–3), perchloric acid (to adjust pH = 2) and sodium perchlorate (to adjust ionic strength I in each series (between different series I varied from 0.7 mol·Kg–1 to 4.0 mol·Kg–1)). log β° for several complexes were estimated by SVD-based mathematical analysis of spectra. The existence of isomers of uranyl(VI)-sulfate complexes is discussed.

Keywords

Coordinate Water Molecule Constant Ionic Strength Sodium Perchlorate Radioactive Waste Repository Sulfate Ligand 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Jakub Višňák
    • 1
  • Aleš Vetešník
    • 1
  • Karel Štamberg
    • 1
  • Jiří Bok
    • 2
  1. 1.Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PraguePrague 1Czech Republic
  2. 2.Faculty of Mathematics and Physics, Institute of PhysicsCharles University in PraguePrague 2Czech Republic

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