Transport behaviour of the lanthanide 152Eu(III), 153Gd(III) and 170Tm(III) and transplutonium element 254Es(III), 244Cm(III), 241Am(III), 249Cf(III) and 249Bk(III) ions in aqueous solutions at 298 K

  • N. Ouerfelli
  • D. Das
  • H. Latrous
  • M. Ammar
  • J. Oliver


Ionic self-diffusion coefficients (D) for trivalent radiotracers, lanthanide and actinide ions have been determined in concentrated aqueous solutions of supporting electrolytes of Gd(NO3)3–HNO3 or Nd(ClO3)4–HClO4 up to 1.5 mol L−1 at 298.15 K and pH 2.50 by the open-end capillary method. The data obtained in large range of concentrations, allow to derive the limiting value D°, the validity of the Onsager limiting law and a more extended law. This study contributes to demonstrate similarities in transport and structure properties between 4f and 5f trivalent ions explained by a similar electronic configuration, ionic radius and hydration number. An empirical equation is suggested for predicting ionic hydration number with a good precision.


Self-diffusion coefficient Open end capillary method Lanthanide and actinide trivalent ions Onsager law Asymmetrical 3:1 electrolyte 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • N. Ouerfelli
    • 1
    • 2
  • D. Das
    • 3
  • H. Latrous
    • 2
  • M. Ammar
    • 2
  • J. Oliver
    • 4
  1. 1.Department of ChemistryGirls College of ScienceDammamSaudi Arabia
  2. 2.Laboratoire de Biophysique et Technologies Médicales, Institut Supérieur des Technologies Médicales de Tunis, Université de Tunis El ManarTunisTunisia
  3. 3.Department of ChemistryDinhata CollegeDinhata, Cooch BeharIndia
  4. 4.Oak-Ridge National LaboratoryOak RidgeUSA

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