Abstract
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.
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Ouerfelli, N., Das, D., Latrous, H. et al. 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. J Radioanal Nucl Chem 300, 51–55 (2014). https://doi.org/10.1007/s10967-014-2965-9
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DOI: https://doi.org/10.1007/s10967-014-2965-9