Determination of difficult-to-measure actinides in evaporator concentrate

Statistical suitability testing of the Aliquat-336, AnaLig® Pu-02 and TRU® Resin use for the 239,240Pu, 238Pu determination

“…Plutonium must be present in solution for absorption on AnaLig Ò Pu-02 as Pu(IV) [5,9,14,17,[20][21][22]. To the 2 M HNO 3 solution about 0,5 g of sodium nitrite was added to ensure conversion of Pu(III) to Pu(IV) and the solution was gently warmed for about 15 min.…”

“…The column was washed with 10 mL 1 M HNO 3 and 3 mL 9 M HCl. Pu was eluted with 20 mL of 9MHCl/0.4 mL 15 % TiCl 3 solution [5,9,14,17,[20][21][22]. Plutonium fraction eluted from the columns were evaporated near to dryness and residue was dissolved in 6 mL 1 M HCl.…”

“…Analyzing of samples by solid phase extraction (SPE) methods can clearly be faster than traditional liquid-liquid extraction methods. A variety of SPE materials called AnaLig have been developed using ''molecular recognition'' ligands on solid supports and commercialized by IBC Advanced Technologies [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Plutonium can be found in environmental samples as a fallout from nuclear weapons tests, nuclear reactor accidents, discharges from reprocessing plants and radioactive waste.…”