Table 1: Acid uptake by TBP: analytical results.

Initial conc. of nitric acid in aqueous phase (mol/L)Conc. of nitric acid in equilibrated aqueous phase (mol/L)Conc. of nitric acid in equilibrated TBP phase (mol/L)Distribution ratio

21.761.190.67
43.532.180.61
65.352.850.53
87.453.140.42
109.313.630.39
1211.464.120.36
1413.404.800.35
15.615.105.490.35