Amount of metal ion, (μg) Mass taken,/μg Average (%) Recovery* Chromogenic ligand
Pt(IV) 150 99.5  
Ir(III) 100 99.4 stannous chloridehydrobromic acid
Pt(IV) 150 99.7  
Rh(III)a 300 99.2 stannous chloride- KI
Pt(IV) 150 99.8  
Pd(II)a 200 99.4 4’-ChloroPTPT
Pt(IV) 150 99.2  
Ru(III) 200 98.9 4’-ChloroPTPT
Pt(IV) 150 99.8  
Au(III) 200 99.1 SnCl2
Pt(IV) 150 99.7  
Se(IV) 200 99.0 4’-ChloroPTPT
Pt(IV) 150 99.8  
Te(IV) 200 98.9 4’-ChloroPTPT
Pt(IV) 150 99.4  
Os(VIII) 200 99.0 Thiourea
Pt(IV) 150 99.4  
Fe(III) 500 98.7 Thiocynate
Pt(IV) 150 99.0  
Cu(II) 1000 98.6 4’-ChloroPTPT
Pt(IV) 150 99.0  
Ni(II) 1000 97.9 DMG
Pt(IV) 150 99.9  
Co(II) 500 97.8 Thiocynate
amasked with 20 mg tartrate
Table 6: Separation of platinum (IV) from binary mixtures.