Ru(Ⅲ)-KIO_4-对乙酰基偶氮羧褪色反应用于痕量钌的催化光度测定  

Catalytic Spectrophotometric Determination of Ruthenium Using the Fading Reaction of Ru (Ⅲ)-KIO_4-p-Acetylcarboxylazo

作　　者：寇宗燕[1] 刘锡林[1] 陈兴国[2] 胡之德[2] 

机构地区：[1]甘肃教育学院,730000 [2]兰州大学化学系

出　　处：《分析试验室》1992年第4期48-49,共2页Chinese Journal of Analysis Laboratory

基　　金：甘肃省自然科学基金:ZR-91-20

摘　　要：KI0_4-对乙酰基偶氮羧在0.5mol/L HCI介质中加热至沸亦无明显的褪色现象。但有Ru(Ⅲ)存在时,褪色反应在2min内完成且与Ru(Ⅲ)的浓度有很好的线性关系。在此基础上建立了痕量钌的催化分光光度分析法。其检出限为0.1pg/10mL;钌含量在0.1～1.2μg/10mL范围内成直线。反应在水相中直接进行,简便快速,选择性亦好。A new catalytic Spectrophotometric method for the determination of ruthenium has been established based on the catalytic action of Ru(Ⅲ)on the oxidative fading reaction of pacetylcarboxylazo with KIO_4 in 0.5mol/L HCl in a boiling water bath. The method offers the advantages of simplicity,rapidity and sensitivity. The limit of detection is 0.1μg/10mL and the linear range is 0.1～1.2μg/mL.

关 键 词：钌 乙酰基偶氮羧 催化光度 碘酸钾 

分 类 号：O614.821[理学—无机化学]