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对电解产生亚铜离子库仑滴定金的方法作了进一步的研究,用平衡电势法指示终点,可提高灵敏度近一百倍。用硝酸分离铜阳极泥中的干扰离子,进行金的库仑滴定,结果与比色法接近。
The method of producing cuprous ion coulometric titration gold by electrolysis has been further studied, and the end point can be indicated by the balance potential method, which can increase the sensitivity nearly a hundred times. The nitric acid was used to separate the interfering ions in the copper anode slime and the coulometric titration of gold was carried out. The results were close to that of the colorimetric method.