摘要
在盐酸介质中Ru(Ⅲ)对IO_4^-氧化孔雀绿这一褪色反应具有强烈的催化作用,以抗坏血酸中止反应,采用固定时间法,拟定了一个检出限和测定范围分别为3.8ng/L和7.6～100ng/L钌的催化光度新方法,并用于氯化渣中钌的测定。
A highly sensitive and selective catalytie spectrophotometric method for determination of ruthenium is described based on the catalytic effect of Ru(Ⅲ) for the slow redox reaction between malachite green and IO_4^-in HCl media, and aseorbic acid is chosen as quenching reagent for the indication reaction. A detection limit of 3.8ng/L and determination range from 7.6 to 100 ng/L for Ru are obtained by the fixed time procedure. Ruthenium in real sample was analysed by this method.
出处
《贵金属》
CAS
CSCD
北大核心
1992年第2期51-54,共4页
Precious Metals
关键词
钌
孔雀绿
催化法
分光光度法
Ruthenium, Malachite green, Catalytic analysis, Spectrophotometry
