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PROTOTYPE CORRELATION MASK FLAME PHOTOMETRIC DETECTOR FOR MEASURING SULFUR DIOXIDE
Citation:
Hornig, A. PROTOTYPE CORRELATION MASK FLAME PHOTOMETRIC DETECTOR FOR MEASURING SULFUR DIOXIDE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-77/130 (NTIS PB270979), 1977.
Description:
A prototype flame photometric detector system (FPD) to measure gaseous sulfur compounds was fabricated using a previously developed correlation mask optical system and a new flame housing. Also, a new burner for the FPD system was optimized to view the excited molecular sulfur emission. The sample/hydrogen intake system was also redesigned to operate under a positive pressure, resulting in improved flame stability. The prototype detector system was equipped with a cooled photomultiplier with special optics to enhance sensitivity. Initial tests with the completed system indicated the capability of measuring sulfur dioxide at the part-per-billion level. Because of subsequent problems, an absolute calibration of the system was not carried out.