Determination of Metallic Impurities in Uranium Through Anion Exchange Separation and Neutron Activation Analysis

摘要

The separation of metals from uranium by anionic exchange was studied. The behaviour of ions in Dowex 1 x 8 in HNO/sub 3/, H/sub 2/SO/sub 4/, HC1, HCL-HF, and NH/sub 3/ media and Dowex 2x8 in H/sub 2/SO/sub 4/ medium were investigated. Methods for the separation of Na, Mg, Al, K, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Rb, Zr, Ag, Cd, Cs, Ba, La, Ce, Nd, Sm, Eu, Tb, Yb, La, Hf and Th were developed. For Mo, partial separation was obtained. Separation schemes for the neutron activation analysis of metallic impurities in uranium are proposed. The detection limits are given. The results for the elements Al, Cr, Mn, Co, Ni, Cu, V and Fe determined from the IAEA reference samples SR-54/64 are compared with recommended values. (ERA citation 12:023078)