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近来,曾报导利用在电极上共沉积生成金属间化合物的作用来提高电化学溶出伏安法的灵敏度和选择性。硒与铜或碲与铜共沉积于铂电极和石墨电极上能生成二元金属间化合物,在悬汞电极上这两对元素也存在共沉积现象并且已用于测定硒或硒与碲。我们研究了在酸性氯化铵-硫酸铵底液中,硒、碲在汞电极上与铜的共沉积作用,认为于-0.25和-0.5伏电解时硒与铜生成两种不同组成的二元金
Recently, it has been reported that the effect of electrochemical stripping voltammetry on the sensitivity and selectivity of electrochemical stripping voltammetry has been reported by the effect of co-deposition on electrodes to form intermetallic compounds. The co-deposition of selenium with copper or tellurium and copper on platinum and graphite electrodes produces a binary intermetallic compound which is also co-deposited on the hanging mercury electrode and has been used to determine selenium or selenium and tellurium. We studied the co-deposition of selenium and tellurium on the mercury electrode with acidic copper chloride-ammonium sulfate at the bottom of the solution. It is believed that selenium and copper produce two different binary compositions at -0.25 and -0.5 volt electrolysis gold