Determination of VOCs in traffic exhaust by FTIR absorption spectrometry

Achim Sedlmaier; Klaus Schaefer; K. H. Becker; Klaus Brockmann; Joerg Heland; Ralf Kurtenbach; J. Loerzer; Peter Wiesen

doi:10.1117/12.364178

16 September 1999 Determination of VOCs in traffic exhaust by FTIR absorption spectrometry

Achim Sedlmaier, Klaus Schaefer, K. H. Becker, Klaus Brockmann, Joerg Heland, Ralf Kurtenbach, J. Loerzer, Peter Wiesen

Proceedings Volume 3821, Environmental Sensing and Applications; (1999) https://doi.org/10.1117/12.364178
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

Infrared spectral features of organic hydrocarbons were investigated with respect to single compounds. A separation and consequently a quantitative concentration determination is possible for ethane, ethene, ethyne, propene, iso-butene, benzene, toluene, o-xylene, m-xylene and p-xylene using a MCT detector with a cut-off frequency below 660 cm^-1. The spectral features of propane, butane, pentane and hexane cannot be separated. In order to be able to derive parameters, such as detection limits, accuracy, precision and the influence of interfering species or different reference data, validation measurements were carried out in a road tunnel and in the laboratory using an open White mirror compartment and closed White cells. FTIR spectra were collected with two spectrometers at different spectral resolutions. Parallel GC measurements were made for comparison.

Citation Download Citation

Achim Sedlmaier, Klaus Schaefer, K. H. Becker, Klaus Brockmann, Joerg Heland, Ralf Kurtenbach, J. Loerzer, and Peter Wiesen "Determination of VOCs in traffic exhaust by FTIR absorption spectrometry", Proc. SPIE 3821, Environmental Sensing and Applications, (16 September 1999); https://doi.org/10.1117/12.364178

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