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A new sequential procedure for the analysis of Pu, Am, Cm and Sr in low-level liquid radioactive effluents is presented. The proposed method utilises an actinide specific extraction chromatographic resin (TRU- Resin) for the isolation and separation of the actinides. 90 Sr determination is accomplished via analysis of its progeny '"Y, which is purified with TBP extraction. The proposed method is simpler, faster and more robust than traditional ion exchange, extraction and precipitation methods used in routine analysis of actinides and '"Sr. The chemical yield of all analytes, when analysing 200 ml low-level effluent, is between 80-95%. 239 - 240 Pu is performed using standard separation procedures The low-level liquid waste at IFE originates from the operation of a small (thermal output 2 MW) research reactor and the production of radiopharmaceuticals. The waste from different locations at IFE is collected in large drums to allow the decay of the shortest living radionuclides before an evaluation on the discharge of the liquid is undertaken. Representative samples from the drums are then analysed for a-, P- and y-emirters. The composition of the liquid and the radionuclide content varies with the activities at the specific time. The general level of some radionuclides in the liquid is shown in Table 1. : Activities of some radionuclides in the low-level waste from IFE.

Sequential analysis of Sr, Pu, Am and Cm: Low-level liquid radioactive effluents