Statistics – Applications
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..430..215w&link_type=abstract
The eleventh international conference on fourier transform spectroscopy. AIP Conference Proceedings, Volume 430, pp. 215-218 (1
Statistics
Applications
1
Effects Of Air Pollution, Effects Of Clouds And Water, Ice Crystal Phenomena
Scientific paper
In industrial emission monitoring applications sometimes very high water vapour concentrations can occur. In order to find out which accuracy a relatively simple FTS-based measuring system can achieve under such conditions, we performed NO measurements in presence of up to 60 vol.% water vapour. We used a Bruker IFS 66 with a spectral resolution of 1 cm-1 equipped with a pyroelectric DTGS-detector and a gas cell with 0.8 m path length. Concentrations were calculated from the measured spectra using the nonlinear NLS method. We found out that the loss of measuring effect caused by the reduction of path length is partially compensated by the absence of losses normally encountered with White cells. Furthermore, the capability of the NLS method to evaluate spectra with a low signal/noise ration made it possible to obtain sufficient accuracies for most industrial applications. The results make clear, that it is possible to build a relatively simple multicompound emission monitoring system based on an FTS.
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