Abstract

The spectral interferences due to uranium fission in thermal neutron activation analysis (NAA) were determined for Ba, Cr, Ce, La, Mo, Nd, Ru, Sm, Te and Zr. For Ba, Mo, Te and Zr the interferences were also evaluated for epithermal NAA. The degree of interference was calculated in terms of the apparent ppm concentration of the element of interest per ppm of U. High U concentrations in geological material can severely hamper the analysis of all the elements (except Cr) by NAA.

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