1. Talanta. 1972 Nov;19(11):1454-7. Radiochemical separation of zirconium and hafnium from other radionuclides. Hahn RB(1). Author information: (1)Analytical Sciences Division U.K. Atomic Energy Research Establishment Harwell, Berks., U.K. Radiozirconium and radiohafnium may be separated from all other radionuclides except scandium and protactinium by precipitation with mandelic acid from 5-10 ...