Abstract
A technique for simultaneous detection of oxygen molecules and soot particles by means of visible tunable diode laser absorption spectroscopy was investigated. The effects of solid particles on the measurement of oxygen molecules were evaluated using a 760 nm visible diode laser. The maximum solid particle density was 5.6g/m3m, allowing measurement of the concentration of oxygen with sufficient precision. We applied this technique to analysis of real exhaust gas from a large-scale test furnace, and verified that oxygen molecules and soot particles in such gas can be directly measured from a large-scale test plant without pretreatement, such as removal of water vapor and soot.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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