Abstract: Science Set Journal of Physics

Abstract:
The first research reactor in Nigeria (NIRR-1) have been converted to LEU core in 2018 and characterized in 2022. The major analytical work with NIRR-1 is NAA which required development of protocols for the new LEU core. In this research, the experimental procedures for determination of over 30 elements of interest of geological and biological samples have been developed using Certified reference materials (CRM) and standard reference materials (SRM) In order to validate the experimental procedures the following standard reference materials, (IAEA-359, IAEA-336, IAEA 158, NIST 2690, and NIST1633C) were irradiated and analyzed. The concentrations in part per million (ppm) of the following elements Eu, Fe, Ga, Hf, In, K, La, Lu, Ca, Ce, Cl, Co, Cr, Cs, Cu, Mg, Mn, Na, Rb, Sb, Sc, Sm, Ta, Tb, Th, Ti, Al, As, Au, Ba, Br, Dy, U, V, Yb and Zn are in good agreement with the certified values. The capability of the technique and the facility was also validated as presented in the limit of detection (LOD).