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USE OF A FOURIER TRANSFORM SPECTROMETER AS A REMOTE SENSOR AT SUPERFUND SITES
Citation:
Russwurm, G., R. Kagann, O. Simpson, AND W. McClenny. USE OF A FOURIER TRANSFORM SPECTROMETER AS A REMOTE SENSOR AT SUPERFUND SITES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-91/115 (NTIS PB91199844), 1991.
Description:
A Fourier transform infrared remote sensor (FTIR-RS) was used to measure chemical emissions at the Shaver's Park Superfund site in northwestern Georgia. he system was bistatic with a source/receiver at one end of a 250 path and a retroreflector at the other end. he source/receiver was a Nicolet Model 730 FTIR system coupled to a telescope with the appropriate transfer optics. he average concentrations of target gases along the path are inferred by matching field spectra with reference spectra of precisely measured quantities of the target gases. easurements indicated that benzonitrile and benzaldehyde concentrations at the site were lower than the FTIR-RS detection limits of 70 and 16 ppm-m, respectively. ackground IR radiation was successfully eliminated by modulating the IR before it was transmitted along the path. uality assurance measurements to establish the precision and accuracy of known gas burdens (ppm-m) were carried out using a 15-cm cell containing high concentrations of several gases.
