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Ru（Ⅲ）CPA-DBC-KIO4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
【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。
【Abstract】 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 KIO4 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；
【Key words】 Catalytic photometry； 2-(4-Chloro-2-phosphonophenylazo)-7-(2,6-dibromo-4-chlorophenylazo)-1,8-dihydroxy-naphthalene-3,6-disulfonic acid (CPA-DBC)； Ruthenium；
【Key words】 Catalytic photometry； 2-(4-Chloro-2-phosphonophenylazo)-7-(2,6-dibromo-4-chlorophenylazo)-1,8-dihydroxy-naphthalene-3,6-disulfonic acid (CPA-DBC)； Ruthenium；
【基金】 甘肃省教育厅资助项目(S997-02)
- 【文献出处】 理化检验(化学分册) ,Physical Testing and Chemical Analysis Part B Chemical Analysis , 编辑部邮箱 ,2004年06期
- 【分类号】O657.3
- 【被引频次】2
- 【下载频次】47