In this paper, with the reference to the velocity of discharge, the average emission concentration and the emission characteristics of the gaseous pollution sources, three sampling methods: integral method, integration by parts and finite summation approximation are derived, which are employed in monitoring of pollution sources.

The renovated precipitator has considerably improved dust removal of the machine with dust emission concentration lower than 150mg/m 3 , the standard limit regulated by the national standard of air pollutants emission for cement plant.

An on-the-spot test on the emission concentration of cooking fume was made with two different methods and analysis done on its components by sampling experiment method.

The Zinc Oxide devise to deal with low concentration Sulfur Dioxide off-gas of Zinc leaching residue in volatilization kiln is introduced in detail in principle, process, important technique economy parameter and existing problem.

In this thesis,we built a Simple Air Quality Numerical Model System(SAQMS) for forecasting SO2 concentration.

The contrast of the simulated and observed values shows that the calculated result of modle basically reflect the real change of SO_2 concentration.

Preliminary study on forecast confines of SO_2 concentration using multivariate linear regression coefficient;