caa a22 4500 469109947 CHVBK 20180323133107.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF02041029 doi (NATIONALLICENCE)springer-10.1007/BF02041029 Extraction behavior of uranium, plutonium and some fission products with gamma-irradiated N, N′-dialkylamides [Elektronische Daten] [P. Ruikar, M. Nagar, M. Subramanian] The extraction behavior of uranium(VI), plutonium(IV) and fission products like zirconium, ruthenium and europium from 3.5M nitric acid medium with gamma-irradiated dibutyl derivatives of hexanamide (DBHA), octanamide (DBOA) and decanamide (DBDA) in dodecane has been investigated as a function of absorbed dose up to 184 MRads. The results indicate that the Kd value for extraction of uranium(VI) decreases gradually, while Kd for extraction of plutonium(IV) decreases rapidly with dose up to 35 MRads, increasing thereafter with dose, indicating synergistic effects of radiolytic products at higher doses. Ruthenium and europium are not extracted in the entire dose range up to 184 MRads, while extraction of zirconium(IV) increases steadily up to 50 MRads and increases radiply thereafter, indicating synergistic effect of radiolytic products similar to that of plutonium(IV) beyond a dose of 50 MRads. The extractability of uranium(VI) and plutonium(IV) with 1M dibutyl decanamide (DBDA) in dodecane was studied for uranium loading up to 75 mg/ml and plutonium loading up to 3 mg/ml. The percent extraction was found to vary from 91 to 71 for uranium and 95 to 89 for plutonium, respectively. Quantitative stripping of uranium can be achieved with 0.01M nitric acid and plutonium with 0.5M nitric acid and 0.05M hydroxylamine soluton in two steps from an organic phase loaded with 53.2 mg/ml of uranium. Akadémiai Kiadó, 1992 Ruikar P. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut Nagar M. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut Subramanian M. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 159/1(1992-05-01), 167-173 0236-5731 159:1<167 1992 159 10967 https://doi.org/10.1007/BF02041029 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02041029 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ruikar P. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut NATIONALLICENCE 700 1- Nagar M. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut NATIONALLICENCE 700 1- Subramanian M. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085, Bombay, (India) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 159/1(1992-05-01), 167-173 0236-5731 159:1<167 1992 159 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer