年間 4 号発行
ISSN 印刷: 1093-3611
ISSN オンライン: 1940-4360
Indexed in
CONTINUOUS MONITORING OF METAL VOLATILISATION IN A PLASMA FURNACE BY INDUCTIVELY COUPLED PLASMA EMISSION SPECTROMETRY
要約
Several recent studies have shown that it is possible to use Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) in the online analysis of metals in flue gases produced by industrial processes. The limits of detection observed are very low, in the μg/m3 range. This technique has been used to monitor the gases in a plasma reactor devoted to treatment of fine dusts. It permitted us to follow the variations of metal concentrations in the gaseous phase and to evaluate the evaporation rate of various elements according to the reactor parameters. The response time of this technique is very fast, less than one minute in fact. The main difficulty is due to the changes in gas composition. These changes induce a variation in the method sensitivity. It results in errors in the measurement of the absolute concentrations. Solutions are proposed to overcome this difficulty. In spite of these disadvantages, such a method could be very useful in process control.
-
Liu J., Falcoz Q., Gauthier D., Flamant G., Zheng C.Z., Volatilization behavior of Cd and Zn based on continuous emission measurement of flue gas from laboratory-scale coal combustion, Chemosphere, 80, 3, 2010. Crossref