View More View Less
  • 1 National Institute of Nuclear Research Chemistry Department Col. Escandon, Deleg. Miguel Hidalgo P.O. Box 18-1027 11801 México D. F. México
Restricted access


The state of trace concentrations of95Zr–95Nb and134Cs was studied at an initial pH>13 in an uranyl triperoxidate medium using the electromigration method. OH ions governing the potential are adsorbed on the colloidal Nb(V)-hydroxide which leads to an increase in its negative electric charge; while95Zr did not move during the procedure. However, the electrophoretic mobility of the134Cs could be explained in terms of their agglomerations attributed to the interaction of Cs+ ions with water molecules to give larger aggregations.