Ru(Ⅲ)CPA-DBC-KIO_4褪色反应催化光度法测定微量钌  

PHOTOMETRIC DETERMINATION OF MICROAMOUNTS OF RUTHENIUM BY ITS CATALYTIC ACTION ON THE OXIDATIVE DECOLORIZATION OF CPA-DBC WITH POTASSIUM PERIODATE

作　　者：寇明泽[1] 寇宗燕[2] 向晓明[2] 

机构地区：[1]西北民族大学,兰州730030 [2]甘肃教育学院化学系

出　　处：《理化检验（化学分册）》2004年第6期320-321,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：甘肃省教育厅资助项目(S997-02)

摘　　要：报道了以钌(Ⅲ)催化KIO4氧化CPA DBC为基础的测定微量钌的催化光度分析,建立了一种在水相中直接测定微量钌的方法。钌(Ⅲ)含量在4.0～30.0μg·L-1范围内符合比耳定律,检出限为4.0μg·L-1。方法用于贵金属精矿中钌的测定,结果满意。A new catalytic spectrophotometric method for the determination of ruthenium(Ⅲ) was deseribed based on the catalytic action of Ru(Ⅲ) on the oxidative decolorization of CPA-DBC with KIO_4 in an acidic medium. Beer′s law was obeyed from 4.0～30.0μg·L^(-1) of Ru(Ⅲ) and the detection limit was 4.0μg·L^(-1). This method has been used to determine Ru in refined ores with satisfactory results.

关 键 词：催化光度法 DBC-偶氮氯膦 钌 

分 类 号：O655.1[理学—分析化学]