Fig. 5
From: Ultra-selective ligand-driven separation of strategic actinides
Separation of Bk, from Gd, Lu, Am, Cf, and Es. a Extraction of 177Lu (crosses), 153Gd (squares), 243Am (diamonds), 249Bk (triangles), 249Cf (circles) and 253Es (vertical crosses) by HDEHP as a function of the extractant concentration. Aqueous phase: 1 mM 343HOPO in 0.1 M HNO3 and 1.9 M NaNO3. Organic phase: HDEHP in kerosene. b Corresponding separation factors. A log scale is used for clarity. See Supplementary Fig. 8 for results as a function of the phase ratio. c and d show the extraction yields of 249Bk and 249Cf by TODGA (solid lines) and separation factors Cf/Bk (dotted lines) as a function of the acidity and in the absence or presence of 1 mM 343HOPO, respectively. Aqueous phase: 0 or 1 mM 343HOPO in HNO3. Organic phase: 0.1 M TODGA in kerosene. T = 25 °C. O/A = 1, one contact. Points with arrows are lower limits
