| With the high speed development of global economic and the continues increase of the population, ecological environment has being a focal point. Furthermore, with the enhancement of environment consciousness and the improvement of life quality, whole-community will be stricter to the demand of environment protection and be harder to the expectation of the improvement of environment quality. At the same time, with further extend of the open range and the liter of environment standard after WTO, people presents higer requirement to environment protection. Therefore, the previous researches cannot meet the new demands. At present, the studies on TP are not only concerned with the PM10'S effect on atmosphere, but also with the composition, its grain size and harm to man. In other words, it is also called to the grain size distribution of particulates and a variety of harmful materials attached on it. The particulates can cause cancer, deformity and mutant gene. They are one of principal reasons leading to the rising of human being... |