Interaction of Uranyl with Humic and Fulvic Acids at High Ionic Strength

  • N. Labonne-Wall
  • G. R. Choppin
  • C. Lopez
  • J-M. Monsallier
Chapter

Abstract

The binding of UO2 2+ to two different humic acids (one predominantly aliphatic and the other predominantly aromatic) and a fulvic acid has been studied at high ionic strengths (in NaCl medium) by solvent extraction. The results indicate that the aliphatic vs. aromatic nature of humic acids does not influence significantly the binding of UO2 2+. Increases in both the ionic strength and pH cause an increase in the binding constants of the complexes. The complexes with the fulvic acid are weaker than those with the humic acids.

Keywords

Ionic Strength Humic Substance Humic Acid Potentiometric Titration High Ionic Strength 
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

© Kluwer Academic / Plenum Publishers, New York 1999

Authors and Affiliations

  • N. Labonne-Wall
    • 1
  • G. R. Choppin
    • 1
  • C. Lopez
    • 1
  • J-M. Monsallier
    • 1
  1. 1.Department of ChemistryFlorida State UniversityTallahasseeUSA

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