Microwave induced plasma torches for on-line combustion gas analysis

Combustion gases were monitored directly above the combustion process, where hazardous elements are still present in high concentrations. As an alternative, microwave induced plasmas produced by the TIA (from "Torche Injection Axiale") and the MPT (from "Microwave Plasma Torch") were evaluated and their analytical performances compared. Plasmas have a relatively high electron density and temperature and seem to have overcome the large sensitivity to water vapor, being characteristic for many other MIPs.