Abstracto

Liquid-liquid extraction of gold(III)with 4-(4-ethoxybenzylideneamino)-5- methyl-4H-1, 2, 4-triazole-3-thiol (EBIMTT) fromhydrochloric acidmedia

Uzma Parveen K.Shaikh, Machhindra K.Lande, Vinod A.Shelke, Balasaheb R.Arbad

The solvent extraction of gold (III) fromhydrochloric acid media using 4- (4-ethoxybenzylideneamino)-5-methyl-4H-1,2,4-triazole-3-thiol (EBIMTT) in chloroform was studied as a function of several variables, such as reagent, acid and metal ion concentration, effect of various diluents, and diverse ions. The gold (III)-EBIMTT complexwas stable for more than 24 hours with molar absorptivity and SandellÂ’s sensitivity of (1.8×104 L mol-1 cm-1) and (0.058µg cm-2), respectively, which indicates applicability of the method. Present method is effective, rapid, reproducible, and free from interference of almost all metal ions tested. The proposed method was further applied for the separation of gold (III) from binary mixtures, synthetic mixtures, alloys and commercially available samples.