Rhodium in car exhaust tips by total automatic activation analysis

被引：4

作者：

Grass, F. ^{[1
]}

Westphal, G. P. ^{[1
]}

Lemmel, H. ^{[1
]}

Sterba, J. ^{[1
]}

机构：

[1] Inst Atom, A-1020 Vienna, Austria

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2007年 / 271卷 / 02期

关键词：

Diesel Engine; Rhodium; Hafnium; Sampling Distance; Exhaust System;

D O I：

10.1007/s10967-007-0237-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Exhaust systems of modern cars contain catalysts for the reduction of CO, NOx and hydrocarbons. These catalysts are made of ceramic materials with a large surface on which platinum metals catalyse the oxidation. The catalysts contain approximately 2 g of platinum and 0.4 g of rhodium. Recently platinum is being replaced by palladium. During driving the platinum-group elements (PGEs) are expelled from the tip in fine particles and are deposited in the environment. For a projected study of emissions from cars driven on streets and highways it is important to know which elements can be measured by short time activation analysis without any chemical procedure.

引用

页码：503 / 506

页数：4

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