Separation of Actinium, Thorium and Protactinium from Liquid Media

91

Pa

Protactinium In HCl, protactinium is absorbed by DOWEX™ 21K XLT Strong Base Anion Exchange Resin and has a low affinity for a strong acid cation resin like DOWEX G 26 (H) Resin.


90

Th

Thorium Thorium is strongly absorbed from HCl by a strong acid cation exchanger like DOWEX™ G 26 (H) Resin and has a low affinity for a strong base anion exchange resin.


89

Ac

Actinium

Actinium is not ionically active and, therefore, it is not amenable to ion exchange separations.

 
Actinium, thorium, and protactinium are extremely rare metals that occur naturally in uranium ores.