ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Separation of some radioactive isotopes from cyclotron targets

J. G. Sevasťjanov and A..S. Bezmaternych

Physico-Energetic Institute, Obninsk , USSR.

Abstract: New methods for the sepn. of carrier-free radioactive prepns. from the bulk of the cyclotron target material and the methods for the isolation of carrier-free ²²Na, ²⁶Al, and ⁷³As and ⁷⁴As were developed. ²²Na was prepd. from the Mg target in the alloy MA₈ which was irradiated with d. Mg was activated and pptd. to form MgSO₄ and removed from the water-acetone soln. ²²Na was retained on the cation exchanger from which it was desorbed with 0.1N HCl. ²⁶Al which was formed during the activation, was pptd. with NH₃ as Al(OH)₃, changed into sol. aluminate by NaOH, purified on the anion exchanger, sorbed on the cation exchanger, and desorbed with 2N HCl. Radioisotopes ^73,74As were prepd. by irradiating Ge in the Cu-Ge alloy with d and by their pptn. with Fe(OH)₃ at pH 3.5-4.0. The sepn. from Fe and the purification from Ge and ⁶⁵Zn was accomplished by anion exchangers. These methods are suitable for the sepn. of the radioisotopes from the industrial targets in the amts. up to 100 g.

Full paper in Portable Document Format: 218a616.pdf (in Russian)

Chemical Papers 21 (8) 616–619 (1967)