Figure 1: Plot of log K_{ex}^{mix} versus log ([Ba^{2+}][L]_{NB}[Pic^{−}]) for the extraction of
BaPic_{2} by L = 18C6 into NB. A broken line shows a regression one with R =
0.965 analyzed by Equation (5). Its analysis yielded K_{D,Pic} = 0.20 ± 0.02 and K_{ex}/
mol^{−3} dm^{9} = (5.6 ± 1.0) × 10^{10}. |