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有关钯中微量银的分离与测定报导不多,今井照男用甲基异丁酮萃取钯的硫氰化物,残留的少量钯继以丁二肟-氯仿萃取进一步分离.然后用双硫腙测定银.钯中银虽然定量分离,但操作较繁琐,同时不便于钯的回收. 丁二肟及其它一些肟类很早就用来分离钯,但对银的分离效果未见详细报导。碘化物可定量分离钯,但银生成碘化银沉淀而不便采用. 氯化铵沉淀钯虽早已用于钯的精炼提纯,但未应用于分析中。我们对氯化铵沉淀钯时氧化剂和洗涤溶液的选择,氯化铵的用量等条件进行了较详细的实验。在所拟定的条件下,0.1～0.5克钯丝(99.9%)经氯
Concerning the separation and determination of traces of silver in palladium, there are few reports on the separation and determination of trace amounts of silver in palladium. Imaginazo maleic extract of palladium with thiocyanate, the remaining small amount of palladium followed by the separation of butadiene dioxime - chloroform extraction further dithizone determination of silver Although the quantitative separation of palladium and silver, but more complicated operation, but not convenient for the recovery of palladium.Glucose and some other oximes used to separate palladium, but no detailed report on the separation of silver. Iodide can be used to quantitatively separate palladium, but it is difficult to use silver to form silver iodide precipitate. Although ammonium chloride precipitated palladium has long been used for the purification of palladium, it has not been used in the analysis. We conducted a more detailed experiment on the choice of oxidizing agent and washing solution when ammonium chloride precipitated palladium, the amount of ammonium chloride and other conditions. Under the proposed conditions, 0.1 to 0.5 g palladium wire (99.9%) is treated with chlorine