Selective method for the determination of gold by anodic stripping voltammetry.

摘要: A highly selective method for the deter- mination of gold by anodic stripping voltammetry is described. For preconcentration a glassy carbon electrode, activated deposition small amounts before measurement, proposed. The Au3+ reduction process at such an electrode effective starting with potential +0.4 V vs. Ag/AgCl electrode. linear dependence current peak on concentration was obtained in range from 5×10−8 to 1×10−6 mol/l. relative standard deviation 2×10-7 mol/l HAuCl4 4.2% (n=5). detection limit 4×10-9 accuracy verified determination reference materials.