论文部分内容阅读
报道了偶氮氯膦-pA用于痕量贵金属元素钌、铑、钯、锇、铱、铂的测定研究及应用。偶氮氯膦-pA与贵金属钯在硝酸介质中表现为显色反应,建立了光度法测定痕量钯的新方法;而偶氮氯膦-pA在微量贵金属离子钌、铑、铂、锇、铱存在下与氧化剂(高碘酸钾、溴酸钾)的催化褪色反应,则建立了测定这些金属元素的催化分光光度新方法。动力学分析建立了相关的线性方程。本文考察了该系列反应的最佳条件、如反应时间、吸收曲线、检出限及线性范围等。此类方法可直接在水溶液中进行,简便快速,灵敏度高,用于贵金属精矿、催化剂等样品中微量铂系元素的测定,结果满意.
Reported chlorophosphonazo-pA trace elements for the ruthenium, rhodium, palladium, osmium, iridium, platinum determination of the research and application. Chlorophosphonazo-pA and noble metal palladium showed a color reaction in nitric acid medium, and a new method was established for the determination of trace amount of palladium by photometric method. Chlorophosphonazo-pA was used in trace amount of noble metal ions such as ruthenium, rhodium, platinum, osmium, A new catalytic spectrophotometric method for the determination of these metal elements was established for the catalytic discoloration of oxidants (potassium periodate and potassium bromate) in the presence of iridium. Kinetic analysis established the related linear equations. This article examines the series of the best reaction conditions, such as reaction time, absorption curve, the detection limit and linear range. Such methods can be directly carried out in aqueous solution, simple and rapid, high sensitivity, for the determination of trace amounts of platinum group elements in precious metal concentrates, catalysts and other samples with satisfactory results.