Publications in Scientific Journals:
F. Grass, G. P. Westphal, H. Lemmel, J.H. Sterba:
"Rhodium in car exhaust tips by total automatic activation analysis";
Journal of Radioanalytical and Nuclear Chemistry,
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.
Created from the Publication Database of the Vienna University of Technology.