Abstract
A test system has been devised for generation and measurement of hydrogen sulfide/air mixtures. Such a system has numerous applications, including toxicology studies, detector badge and tube evaluation, sorbent capacity measurements, and respirator cartridge or canister breakthrough testing. The system in this study utilizes an HNU photoionization analyzer for detection of H2S concentrations of 1.0 ppm to 26.0 ppm. Generation techniques for these low concentration levels, and also for much higher H2S concentrations, have been described. Special consideration has been given to H2S permeation of transfer tubing, and to the effects of water vapor interference upon the analyzer.
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