电解净制汞在室温下进行,汞面上有水溶液覆盖,汞蒸气不易逸出,可减少中毒事故,比蒸馏法净制汞优越。极谱所用的滴汞或汞膜,及电接点等所需要的高纯汞,可用阴极还原法电解净制得到。用电解法净制汞虽早有文献报导,但见到的报导,多是采用阳极氧化法[1]、[2]、[3]。即以粗汞作阳极、使其中所含的杂质在阳极氧化,进入稀硝酸电解液,而在阳极获得净制的汞。这种方法,不仅内层的汞所含的杂质不易除尽,而且,比汞难于氧化的 Electrolysis net mercury at room temperature, mercury surface covered with an aqueous solution, mercury vapor is not easy to escape, can reduce the poisoning, net mercury than the distillation of superior. Mercury drops or mercury films used for polarography, and high-purity mercury required for electrical contacts, can be obtained by cathodic reduction electrolysis. Although the electrolysis of mercury has been reported in the literature for a long time, the most commonly reported anodic reports are anodization [1], [2] and [3]. That the crude mercury as the anode, so that the impurities contained in the anodic oxidation, into the dilute nitric acid electrolyte, and obtained in the anode net mercury. In this method, not only the impurities contained in the inner layer of mercury are not easily eliminated, and moreover, the impurities