Liquid Anion Exchange Chromatographic Extraction and Separation of Platinum(IV) with n-Octylaniline as a Metallurgical Reagent: Analysis of Real Samples

Table 3

Extraction of platinum(IV) as a function of aqueous to organic volume ratio. (Pt(IV) = 150 μg, Aq : Org = 2.5 : 1, pH = 0.50, ascorbic acid = 0.01 M, equilibrium time = 3 min, and n-octylaniline = 0.1 M in toluene).

Aqueous to organic volume ratio	Percentage extraction, (%𝐸)	Distribution ratio, (𝐷)
10 : 10	100	∞
20 : 10	100	∞
25 : 10*	100	∞
30 : 10	100	∞
35 : 10	100	∞
40 : 10	100	∞
50 : 10	94.6	43.79
75 : 10	74.1	7.15
100 : 10	59.4	3.65

∗Recommended for general extraction procedure.