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Radiochemical neutron activation analysis (RNAA) is used when greater sensitivities are required than are provided by INAA. In this method, radiochemical separations on the irradiated material to isolate an element or class of elements and gamma-ray spectrometry is performed on the separated fraction. Separations enhance sensitivity by eliminating interferences and reducing background count-rates. For some applications, detection limits can be improved by up to three orders of magnitude as compared with INAA.
Radiochemical Separation Procedures:
Complete Chart of Radiochemical Separation Procedures:
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