Separation Of Radioisotope 113m In Using Column Chromatography Based on Silica Gel Matrix

Radioisotope indium-113m (113mIn) with half-life, T1/2 = 1.7 hours and gamma energy, E = 391 keV is suitable and meets the criteria as radiotracer in industry. 113mIn radioisotope was obtained from tin-113 decay(113Sn, T1 / 2 = 115 days) of 112Sn (n,) 113Sn neutron activation in nuclear reactor. The process of separation of radioisotope 113mIn using column chromatography method based on silica gel matrix using 0.05 M HCI
solution. Radionuclide and radiochemical purity tests were performed using the gamma-spectrometry method
and paper chromatography. The final product specification in the form of 113mInCl3 is clear solution, pH 2,
obtained yield of 81.83%, radionuclide purity of 90.22%, radiochemical purity of 91.61 ± 0,29% and stable
for 3 days at room temperature.