Paul W Harper

US Patent:

61269093, Oct 3, 2000

Filed:

Jan 28, 1999

Appl. No.:

9/230635

Inventors:

Jacob Rotmensch - Chicago IL
Jenny L. Whitlock - Chicago IL
John J. Hines - Newark IL
Paul V. Harper - Glencoe IL

Assignee:

Arch Development Corporation - Chicago IL

International Classification:

C01G 2900
G21G 404

US Classification:

423 2

Abstract:

A process for producing substantially radio-impurity-free Bi-212 is disclosed. An acidic feed solution containing Pb-212 is contacted with an extraction medium to bind the Pb-212 thereto. The extraction medium is rinsed with a second acid solution to remove impurities therefrom, leaving a substantially impurity-free Pb-212-laden extraction medium The Pb-212 grows on the extraction medium to form Bi-212 by radioactive decay. The Bi-212 is then eluted from the extraction medium with an acid solution to form a substantially radio-impurity-free Bi-212 acid solution. An apparatus for carving out this process and a process for the therapeutic use thereof are also disclosed.