摘要
在pH5.2的HAc-NaAc介质中和加热条件下,痕量Rh(Ⅲ)的存在对于KIO_4氧化溴蓝这一褪色反应具有明显的催化作用。基于这一现象建立了测定痕量铑的催化分光光度分析方法。其检出限为2.0ng/ml,铑含量在4.00~48.0ng/ml符合比尔定律。
ln pH 5.21,HAc-NaAc medium and heating condition,trace Rh (Ⅲ )has a strong catalytic action on the oxidative fading reaction of bromophenol blue and KIO_4.Based on this reaction,a new method for the catalytic spectrophotometric determination of trace Rh(Ⅲ)was establish-ed.Beer’s law obeyed from 4.00 to 48.0 ng/ml and the detection isfound to be 2.0 ng/ml.
出处
《贵金属》
CAS
CSCD
北大核心
1994年第4期39-41,共3页
Precious Metals
关键词
铑
分光光度法
痕量分析
催化反应
Rhodium,Spectrophotometry,Catalytic analysis,Trace analysis