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Determination Of SO2 Concentrations From A Coal-Burning Power Plant Stack By Fourier Spectrometry

A measurement and analysis program to determine the concentration of SO2 in a coal-burning power plant stack was conducted by a passive remote sensing technique, utilizing a PFS-201 Fourier Transform Spectrometer. SO2 concentrations were determined by measuring the radiance of the (w1 + w2) combination band at 2499.0 cm-1 (4.0 μm), while the exhaust gas temperatures were determined by measurement of the peak CO2 radiance at 2396.4 cm-1. Results of the remote measurements compared favorably with the in-stack Du-Pont Analyzer data.