摘要
在酸性介质中，痕量Ｒｕ（Ⅲ）的存在对ＫＩＯ４氧化偶氮氯膦Ⅲ的褪色反应有明显的催化作用，且褪色程度与钌含量有很好的线性关系。据此褪色反应，提出了痕量钌的催化分光光度分析法。方法检出限为０００１μｇ／ｍｌ，灵敏度高。反应在水相中进行，钌含量在０００２～００２０μｇ／ｍｌ符合比耳定律。可用于贵金属精矿中钌含量的测定。
A new catalytic spectrophotometric method for the determination of ruthenium was established basing on the catalytic action of Ru(Ⅲ) on the oxidative fading between chlorophosphonazo(Ⅲ) and KIO 4 in the acid medium in the water bath. The method offers the advantages of simplicity, rapidity, and sensitivity. Beer′s law is obeyed in the range of 0.02～0.20 μg/10 ml. The method has been applied to the determination of ruthenium in refined ores with satisfactory.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
1998年第6期418-420,共3页
Chinese Journal of Rare Metals
关键词
钌
偶氮氯膦Ⅲ
高碘酸钾
催化分光光度法
Chlorophosphonazo(Ⅲ), Catalytic spectrophotometry method, Ruthenium
