Table 1 Separation of 249Bk and 249Cf at the mCi level using TODGA and 343HOPOa

From: Ultra-selective ligand-driven separation of strategic actinides

Conditions Phase Radiopurity Chemical purity
  Initial Bk: 99.13 % ± 0.13 Cf: 0.87 % ± 0.03 Bk: 22.63 % ± 0.54 Cf: 77.37 % ± 0.54
O/A = 0.5 [343HOPO] = 1 mM Organic Bk: 52.70 % Cf: 47.30 % Cf: 99.71 %
  Aqueous Bk: > 99.999 % Bk: > 99.8 %
O/A = 1.0 [343HOPO] = 1 mM Organic Bk: 64.85 % Cf: 35.15 % Cf: 99.5 %
  Aqueous Bk: > 99.999 % Bk: > 99.8 %
O/A = 2.0 [343HOPO] = 1 mM Organic Bk: 70.60 % Cf: 29.40 % Cf: 99.4 %
  Aqueous Bk: > 99.999 % Bk: > 99.8 %
O/A = 1.0 [343HOPO] = 5 mM Organic Bk: 79.72 % Cf: 20.28 % Cf: 99.0 %
  Aqueous Bk: > 99.999 % Bk: > 99.8 %
O/A = 1.0 [343HOPO] = 25 mM Organic Bk: 84.94 % Cf: 15.06 % Cf: 98.6 %
  Aqueous Bk: > 99.999 % Bk: > 99.8 %
  1. aSeparation conditions: 0.1 M TODGA in kerosene; 343HOPO in 3 M HNO3. T = 25 °C. One contact. Activity level: 2 mCi mL−1 (74 GBq L−1)