Abstract
The soot emitted from the stationary pollution source is one of the important atmospheric pollutants.
The soot concentration is an important influence and can detect the total emissions condition of the
pollution source. The new on-line Scattering-Transmission soot concentration measurement method
is presented. The new method is based on the Scattering integration method and the Extinction
theory. The measurement result of the new method is independent of the soot size distribution and
the soot average size. The numerical simulation results based on Mie scattering theory confirmed
the validity of the techniques. The measurement instrument based on this method is produced. The
instrument is produced. The system uses 80C252 as the MCU, displays measurement result through
LCD and transfers the measurement to the monitoring computer. Soot concentration measurement
system is calibrated in one of the steel mill. The results showed the method is very reliable, high
precision.