Abstract
A new analytical method for the fast analysis of trace substances in gas mixtures has been developed incorporating a pulsed tunable laser system and a reflectron time-of-flight mass spectrometer. The technique is especially designed for the time-resolved detection of air pollutants in the exhaust gas of motor engines. The purpose of this new analytical method is to achieve high time resolution (<100 ms), high sensitivity (down to 1 ppm), high quantitative precision (10%), and applicability to most exhaust emission components. The main difficulties for the analysis arise from the large number of components which show very different and rapidly varying concentrations. For a preliminary list of 25 exhaust emission components, all essential prameters have been determined. First results obtained from a real exhaust gas sample are presented.
| Original language | English |
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| Pages (from-to) | 1062-1069 |
| Number of pages | 8 |
| Journal | Analytical Chemistry |
| Volume | 66 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Apr 1994 |