Two radiochemical neutron activation analysis techniques capable for the determination of Ag, Au, Cd, Co, Cr, Cs, Cu, Fe,
Hf, Ir, K, Mn, Mo, Na, Ni, Pd, Pt, Rb, Sc, Se, Ta, Th, Sn, W, Zn, and Zr in niobium via medium- and long-lived indicator radionuclides
were developed. They involve two different irradiation and cooling times as well as two different group separation schemes
based on extraction and ion exchange. The achievable limits of detection are between 10−7 g/g and 10−13 g/g. The techniques were applied to analysis of niobium of different purity grades. For a number of elements, the results
of these techniques are compared with those of other techniques.