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Intercomparison of thorium and uranium results obtained by X-ray energy dispersive spectrometry and neutron activation analysis

Janubia C.B.S.Amaral, Joao B.S.Barbosa, Maria Angela B.C.Menezes, Carlos A.Morais

The objective of this work is to evaluate the performance of the X-Ray Energy Dispersive Spectrometry as an additional analytical support to the development of the chemical process of Uranium and Thorium separation and concentration by liquid-liquid extraction technique. Results obtained fromthe NeutronActivationAnalysis by Instrumental and Fission Delayed Neutrons methods were used to establish the intercomparison. Uranium and thorium were extracted from monazite sulphuric liquor. The analytical techniques were applied on both organic and aqueous samples.