摘要
研究了5-H-酸偶氮若丹宁(HAR)与Pt(IV)的显色反应,在HCl介质中,HAR与Pt(IV)反应生成2∶1稳定配合物,λmax=540nm,ε=1.06×105L·mol-1·cm-1。铂含量在0～30μg/25mL内符合比尔定律,新方法用于催化剂中铂含量的测定,结果令人满意。
The color reaction of platinum with 5-（H-acidazo）-rhodanine（HAR） was studied. In the presence of hydrochloric acid solution, HAR can react with platinum to form a stable 2 ： 1 complex. The molar absorptivity is 1.06× 10^5 L.mol^-1.cm^-1 at 540nm. Beer＇s law is obeyed in the range of 0- 30μg/25mL. This method can be applied to the determination of platinum in catalysts with good results.
出处
《贵金属》
CAS
CSCD
2006年第2期62-64,共3页
Precious Metals
关键词
分析化学
5-H-酸偶氮若丹宁
铂
光度法
Analytic chemistry
5-（H-acidazo）-rhodanine
Platinum
Spectrophotometry
