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Each SO2 monitoring situation possesses characteristics which may imply the selection of a particular sulfur dioxide (SO2) detection principle. Total sample concentration, SO2 concentration range, measurement accuracy, and available manpower to operate and maintain equipment are used as criteria to select a general method of detection from which a specific monitor may be chosen. A table is included, listing principle methods of continuous SO2 detection, their basic characteristics, advantages, and disadvantages. Technical problems of source level SO2 monitoring are discussed and the concept of a complete source sampling and analyzing system is proposed.
air, quality, instruments, monitors, detection, manpower
Environmental engineer, Steams-Roger Inc., Denver, Colo.