Patent Number: 055641040
Section: claims

1. A method of removing a radioactively labeled biological molecule from a liquid radioactive waste solution comprising the steps of: (a) contacting said liquid radioactive waste solution with a magnetizable particle binder to form a magnetizable particle binder:radioactively labeled biological molecule complex; and  (b) separating said complex from said liquid radioactive waste solution by contacting said complex with a magnetic field to remove the radioactively labeled biological molecule from said liquid radioactive waste solution. 2. The method of claim 1 wherein said magnetizable particle binder comprises adsorbent particles attached to a magnetizable polymer. 3. The method of claim 2 wherein said adsorbent particles are charcoal particles. 4. The method of claim 2 wherein said magnetizable polymer is a magnetizable polyacrylamide gel. 5. The method of claim 4 wherein said magnetizable particle binder comprises charcoal particles entrapped in the magnetizable polyacrylamide gel. 6. The method of claim 5 wherein said radioactively labeled biological molecule is a mixture of .sup.125 I folate and .sup.57 Co vitamin B12. 7. The method of claim 1 wherein said magnetizable particle binder is a magnetizable particle immunochemical binder. 8. The method of claim 7 wherein said magnetizable particle immunochemical binder comprises an antibody attached to a magnetizable polymers. 9. The method of claim 8 wherein said magnetizable particle immunochemical binder comprises an antibody chemically coupled to a magnetizable cellulose polymer. 10. The method of claim 7 further comprising the step of binding said radioactively labeled biological molecule to a liquid phase antibody, wherein said magnetizable particle immunochemical binder binds to said liquid phase antibody to form the solid phase binder:radioactively labeled biological molecule complex of step (a). 11. The method of claim 10 wherein said magnetizable particle immunochemical binder comprises an antibody capable of binding to the liquid phase antibody. 12. The method of claim 11 wherein said radioactively labeled biological molecule is .sup.125 I thyroxine, said liquid phase antibody is a mouse antithyroxine antibody, and the magnetizable particle immunochemical binder comprises a sheep anti-mouse antibody.