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Abstract
Automobile exhaust gases were analyzed by Raman spectroscopy using stationary and dynamic sampling of the gas. The Raman polychromator was designed especially for large optical throughput. The polychromator is based on a specifically corrected concave grating and F/0.7 optics at the entrance and the exit of the system. At measuring times in the order of 1 s, it was possible to correlate the carbon oxides, oxygen and hydrogen to nitrogen as standard. The detection of various hydrocarbons occurred at measuring times of several minutes. The contribution includes also a discussion of the nitrogen oxide problem.