摘要
用极谱法研究了金在不同浓度的S_2O_3^(2-)溶液及其中加氨、加Cl^-以及同时加氨和Cl^-的阳极溶解行为。结果表明,在前两种溶液中的行为与文献基本一致,在加Cl^-的溶液中的行为与加氨的类似,电流峰值较加氨时的高,同时加氨和Cl^-的溶液则可得到更高的电流峰值,但氨和Cl^-的浓度应相互配合。说明Cl^-与NH_3在金的阳极溶解中的作用类似,但作用更强,尤其是NH_3与Cl^-有适当的浓度比时。
The behavior of anodic dissolution of gold in thiosulfate solutions respectively containing NH3,C1-,NH3 and Cl- was investigated with polargraph. The results we got from thiosulfate sulution added NH3 and without NH3 were coincided with the results of literature. The behavior of gold in solution added Cl- was similar to that in solutions added NH3,But the peak of current in solution added NH3 and Cl- was more higher than that in solutions added only Cl- if the ratio of [NH3].[C1-] were suitable. Therefore, the catalytic function of NaCl was similar to that of NH3,and the function of NaCl was superior when the ratio of [NH3]:[C1-] were suitable.
出处
《北京石油化工学院学报》
1999年第2期22-25,共4页
Journal of Beijing Institute of Petrochemical Technology
