Influence of -radiolysis of MA separation agent of HONTA on extraction performance

Toigawa, Tomohiro   ; Suzuki, Hideya; Ban, Yasutoshi  ; Ishii, Sho*; Matsumura, Tatsuro  

To evaluate the radiolytic stability of a novel tetradentate extractant of N, N, N', N', N", N"-hexaoctyl-nitrilotriacetamide (HONTA), batch extractions of lanthanide (Ln) elements were performed by using -irradiated HONTA extraction solvents. The distribution ratios decreased exponentially with increasing the absorbed dose, and no difference between Ln could be observed. These indicate that the degradation products of HONTA did not act as Ln extractants, and the decay of Ln extraction were caused by degradation of HONTA.