NEUTRON ACTIVATION DETERMINATION OF NOBLE METALS IN GEOLOGICAL SAMPLES USING SELECTIVE GROUP SEPARATION SCHEME

In this paper a radiochemical procedure for the determination of noble metals in geological samples is described. It consists of thermal neutron irradiation, melt of sample, selective absorption of noble metals on chelating resin and high resolution γ spectrometry. In the procedure, the BE-1- 5- 1 resin retains no Ni, Co, Na, Sr, Sm,Lu,La,Cs,Rb and Ta,and retains only 1% of Fe, Sc,Eu,Ce and Yb and 5% of Ba,Hf and Sb. It is effective for determining noble metals in geological samples.