Abstract
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.
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Grass, F., Westphal, G.P., Lemmel, H. et al. Rhodium in car exhaust tips by total automatic activation analysis. J Radioanal Nucl Chem 271, 503–506 (2007). https://doi.org/10.1007/s10967-007-0237-7
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DOI: https://doi.org/10.1007/s10967-007-0237-7