摘要
本文研究了铂催化次亚磷酸钠还原磷钼酸生成磷钼兰的反应体系。发现Hg(Ⅱ)也是该反应体系的助催化剂。本法的测定下限为0.005～0.05μgPt(Ⅱ)/25mL,已用于铂催化剂中微量铂的测定。
A catalytie speetrophotometric methed based on the reduction of phosphomolybdic acid with sodium hypophosphite using Pt(Ⅱ) as catalyst in the presence of mercury and bromide for trace platinum was investigated The linear range was obtained for 0.005～0.05 ugpt (Ⅱ)/25mL. The method was Used for determination of trace platinum in Pt-catalyst.
关键词
铂
催化显色反应
催化光度法
catalytic spectrophotometric, platinum, sodium hylpophosphite
