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金与共生矿物质之间的电流作用是众多影响金在氰化物或酸性硫脲溶液中溶解速率的因素之一。本实验利用将同一容器或用盐桥相连的两个容器中的两个旋转圆盘电极短接的方法考察了电流作用的某些影响。在氰化物溶液中,当金与铜、黄铜矿、黄铁矿在同一容器中接触时,金的溶解速率大大降低。另一方面,在酸性硫脲介质中,当金电极与黄铜矿和黄铁矿在同一容器中接触时,金的溶解速率增大,这是因为产生的硫能阻止硫脲分解为甲醚化二硫——金在硫脲中溶解时产生的一种副产物。金与方铅矿在同一容器时,方铅矿使金在氯化物中的溶解速率明显加快,这可能是因为 Pb~(2+)在金电极表面作用之故。然而,在酸性硫脲介质中,方铅矿对金的溶解速率影响甚微或根本没有影响。
The current effect between gold and symbiotic minerals is one of many factors that affect the rate of dissolution of gold in cyanide or acid thiourea solutions. In this experiment, some effects of current action were examined by shorting the two rotating disk electrodes in the same container or two containers connected by a salt bridge. In cyanide solutions, the dissolution rate of gold is greatly reduced when gold comes into contact with copper, chalcopyrite, pyrite in the same vessel. On the other hand, in acidic thiourea media, the dissolution rate of gold increases as the gold electrode comes into contact with chalcopyrite and pyrite in the same vessel, as the produced sulfur prevents the thiourea from breaking down into methyl ether Disulfide - a byproduct of gold that dissolves in thiourea. When gold and galena are in the same container, galena accelerates the dissolution rate of gold in the chloride, which may be due to the effect of Pb 2+ on the surface of the gold electrode. However, in acid thiourea media, galena has little or no effect on the dissolution rate of gold.