Abstract
Platinum emissions from two automotive monolithic catalysts have been determined under laboratory conditions on a computer controlled dynamometer. Three stationary speed simulations and the U.S.-75 cycle were applied. Particles were classified on a Berner Impactor and analysed by atomic absorption spectrometry using a signal addition technique. Condensates were also sampled to determine volatile compounds. For quality control, several matrix element studies were performed to demonstrate the accuracy of the analytical method. The emission concentrations, as determined in several test runs and repetitive sampling, range from 3 to 40 ng m−3. In contrast to published data from pellet oxidation catalysts, the emission concentrations determined are lower by 2 orders of magnitude. A possible volatile or watersoluble platinum fraction is most probably negligible.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
