Rapid derivative spectrophotometric method for the determination of platinum in Pt-Ru/C catalyst using iodide media

被引：15

作者：

Balcerzak, M

Kaczmarczyk, M

机构：

[1] Department of Analytical Chemistry, Warsaw University of Technology, 00-664 Warsaw

来源：

ANALYTICAL SCIENCES | 2001年 / 17卷 / 11期

关键词：

D O I：

10.2116/analsci.17.1321

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid spectrophotometric method for the determination of platinum in 20% Pt-Ru (Pt:Ru (1:1)) carbon-supported catalyst has been developed. The samples of catalyst (0.85 - 12.60 mg) have been digested 1) in aqua regia after preliminary separation of carbon by burning or 2) directly in aqua regia in the presence of carbon. The detection of platinum was carried out in the obtained solutions after conversion of the metal into the iodide complex. The interfering effect of ruthenium on the detection of platinum was eliminated by the use of derivative spectrophotometry. Platinum was selectively determined by numerical calculation of the 4th-order-derivative absorption spectrum of the mixture of iodide complexes of both metals.

引用

页码：1321 / 1324

页数：4

共 9 条

[1] Determination of platinum and ruthenium in Pt and Pt-Ru catalysts with carbon support by direct and derivative spectrophotometry [J].