对碘偶氮氯膦-高碘酸钾-钌(Ⅲ)的褪色反应用于痕量钌的催化分光光度法测定  

Catalytic Kinetic Spectrophotometric Determination of Trace Amount of Ruthenium

作　　者：刘锡林[1] 于梅[1] 尉文龙[1] 

机构地区：[1]甘肃教育学院化学系,兰州730000

出　　处：《分析科学学报》1999年第5期406-408,共3页Journal of Analytical Science

基　　金：甘肃省教委资助

摘　　要：在Ｈ２ＳＯ４ 介质中对碘偶氮氯膦与高碘酸钾的褪色反应只有在痕量钌（Ⅲ）的存在下才能定量进行。本文研究了该褪色反应的最佳条件及用于痕量钌的测定方法， 其检出限为０．０２ μｇ·１０ ｍ Ｌ－ １， 钌含量在０．０２～０．３０ μｇ·１０ ｍ Ｌ－ １范围内符合比尔定律。该方法用于贵金属精矿中钌含量的测定， 获得满意结果。In this paper, a kinetic spectrophotometric method for determination of trace amount of ruthenium is established. The method is based on catalytic effect of trace amount of ruthenium on the reaction of chlorophosphonazo PI KIO 4. The optimum conditions were studied carefully, the determination limit was 0.02 μg/10 mL and the linear relation was very good. The method is convenient reliable, rapid and sensitive, and had been applied to determine trace amount of ruthenium in refined ore with satisfactory results.

关 键 词：显色剂 对磺偶氮氯膦 钌 催化 分光光度法 测定 

分 类 号：O614.821[理学—无机化学]