METHOD FOR PURIFICATION OF 225AC FROM IRRADIATED 226RA-TARGETS

摘要

The present invention describes a method for purification of²²⁵Ac from irradiated ²²⁶Ra-targets provided on a support, comprising a leaching treatment of the ²²⁶Ra-targets for leaching essentially the entirety of ²²⁵Ac and ²²⁶Ra with nitric or hydrochloric acid, followed by a first extraction chromatography for separating ²²⁵Ac from ²²⁶Ra and other Ra-isotops and a second extraction chromatography for separating ²²⁵Ac from ²¹⁰Po and ²¹⁰Pb. The finally purified ²²⁵Ac can be used to prepare compositions useful for pharmaceutical purposes.