Development of a Reliable Analytical Method for Liquid Anion-Exchange Extraction and Separation of Neodymium(III)

Table 1

Extraction behavior of neodymium(III) as a function of N-n-octylaniline concentration. Nd(III) = 60 μg, sodium succinate = 0.06 M, pH = 6.00 Aq : Org = 25 : 10, strippant = 0.1 M HClO₄ (2 × 5 mL), equilibrium time = 5 min.

N-n-octylaniline (M)	Percentage extraction (% E)	Distribution ratio (D)
0.00	0.00	0.00
0.005	34.4	1.31
0.01	43.4	1.92
0.02	67.1	5.10
0.03	74.6	7.34
0.05	81.0	10.65
0.07	91.8	27.99
0.08	97.7	106.19
0.09	100	∞
0.1	100	∞
0.2	100	∞
0.3	100	∞
0.5	100	∞