Abstract
Quantitative measurement of volatile organic compound concentrations in flue gas that has a high percentage of water vapor at low part-per-billion (ppb) to part-per-trillion levels represents a demanding analytical challenge. Direct sampling ion trap mass spectrometers developed at Oak Ridge National Laboratory are promising candidates to be developed into monitors of continuous emissions for these and other compounds at very low levels. Two direct sampling interfaces, a sorbent trap/thermal desorption interface and a continuous air monitor, have been tested in field studies of effluent from hazardous-waste incinerators. These interfaces demonstrate both an integrated, time-averaged and a raw gas, real-time approach to flue gas monitoring with detection limits in the ppb to sub-ppb range. The use of these interfaces for flue-gas monitoring with examples drawn from field tests are discussed.
Published Version
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