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.