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Fast Exhaust Gas Probe for Multicomponent Analysis: Scientific/Technical Principle

1993; Linguagem: Inglês

10.4271/930083

2688-3627

Ulrich Boesl, Christian Weickhardt, Ralf Zimmermann, Stefan Schmidt, H. Nagel,

Analytical chemistry methods development

A new analytical method for the automobile industry has been developed using a pulsed tunable laser system and a Reflectron time-of-flight mass spectrometer. The goal was to achieve the following conditions: High time resolution (less than 100 ms), high sensitivity (down to 1 ppm), high accuracy (10%) and applicability to most exhaust emission components. The main problem is the large number of components with very different and fast varying concentrations. For a preliminary list of 25 exhaust emission components, all necessary parameters have been determined. First results obtained from a real exhaust gas sample will be presented. (A) For the covering abstract see IRRD 858138.