| 초록 |
I-129 is an important nuclide that must be analyzed for the disposal of radioactive waste. It can be measured by gamma- or X-spectrometry, liquid scintillation counting (LSC), inductively coupled plasma mass spectrometry (ICP-MS), etc. Gamma- or x-spectrometry requires a chemical separation of iodine from the samples and interfering nuclides, however, it is often adopted as an analytic method because a sample treatment and the handling process of analytical instrument of gamma-spectrometry is easier than other analytic methods. The emission probability of 29.5 and 29.8 keV x-ray are 19.5% and 35.9%, respectively, however, the spectroscopic analysis process is interfered by 33.6 keV x-ray and other background peaks. In this study, peak decomposition with spectral fitting method was performed and its performance was compared with a simple ROI(region of interest) counting method. |
