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

Table 5

Effect of foreign ions on the extraction of platinum(IV). (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).

Tolerance limit, mg	Foreign ion added
25	Tartrate, Mg(II)
15	Fe(III), Zn(II), Mo(VI), Se(IV), Ba(II), Ce(IV), oxalate, citrate, bromide
10	Ni(II), Co(II), U(VI), Hg(II)
5	Cu(II), Pb(II), Cr(VI), Cr(III), Bi(III), Te(IV), Cd(II), EDTA, nitrate
2	Tl(I), Ca(II), Al(III), Cr(III), Cd(II)
1	Ag(I), Os(VIII), Ru(III)
0.5	Rh(III)^a, Pd(II)^a, Ir(III), Au(III)

aMasked with 20 mg tartrate.