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在含有金、铂和钯等元素的合金材料或浓集物中,测定这些元素是困难的.已知的一些金、铂容量或电容量滴定法,大多是在一定的条件下测定单一的贵金属组分.曾用电位滴定研究含有金、铂和钯的混合物溶液和用恒电位库仑法分析这些元素的合金,由于组分间相互干扰的影响,使测定手续繁琐,并导致较大的分析误差.我们用电生Cu(Ⅰ)的库仑滴定法对金铂、金钯及其混合物的还原特性进行了研究;发现了在稀HCl溶液中Au(Ⅲ)被Cu(Ⅰ)还原时Pt(Ⅳ)和Pd(Ⅱ)产生的共轭还原反应.
It is difficult to measure these elements in alloy materials or concentrates containing elements such as gold, platinum and palladium, etc. Some known gold, platinum or titer titration methods are usually based on the determination of a single precious metal under certain conditions Compositions Potentiometric titration was used to study mixtures containing gold, platinum and palladium and alloys analyzed for these elements by potentiostatic coulometry, resulting in cumbersome assay procedures and large analytical errors due to the interaction of the components .We studied the reduction characteristics of gold, platinum, gold and palladium and their mixtures by coulometric titration of electrogenerated Cu (Ⅰ), and found that the reduction of Pt (Ⅳ) by Au (Ⅲ) ) And Pd (II).