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据美国内华达大学麦凯矿业学院的资料,该学院在实验室条件下对含硫(硫脲、乙荒酰胺、硫化钠和硫化铵)存在下,从溶液中沉积和分选铜、镉、汞和砷进行研究。据不同的试验条件,从溶液中沉积金属的次序和提取率也不相同,使用硫化钠沉积铜,可达到99％的金属最大提取率。但是因某些制度原因,获得的沉积物的可过滤性较低。使用硫脲和硫化铵时
According to the University of Nevada Mackay Mining Institute, the institute deposits and separates copper, cadmium, and mercury from solutions in the presence of sulfur (thiourea, budesonide, sodium sulfide, and ammonium sulfide) under laboratory conditions And arsenic research. Depending on the test conditions, the order of metal deposition from the solution and the rate of extraction are also different. With sodium sulphide deposition of copper, the maximum metal extraction rate of 99% can be achieved. However, due to some institutional reasons, the sediment obtained is less filterable. When using thiourea and ammonium sulphide