Analyse On Resource Apportionment Of PM_2.5 In The Center Of Chengdu

PM_2.5 (The particle diameter of aerodynamics≤2.5um) is the resource acceptor by which other contaminations come into the bodies. It may be absorbed by alveolus, then it endanger our health by entering the blood.It is a kind pollutant in the urban atmospheric which is in a huge number with complex elements and diverse nature and is the most harmful.It also the chief pollution of the cities in our country. Therefore, to find out the apportion of the resource and the proportion of the element in atmospere Source Apportionment is complex and important task to prevent the pollution of the Particle.it is also the one of the important realm of the Particle study in recent years.It is cited the instance of chengdu in 2007,The labortary of the contamination had inspected the concentration of three areas in chengdu.It take example for PCA,CMB,FA,RS theories.Through the comparation of the theories, as apportioned the resource in the centre of the chengdu adopting the F actor Theory,then used the PMF Method.It was calculated by PMF3.0 soft in this article . It was obtained the result of the apportionment of the chengdu.It is also analysed the collinearity diagnostic of the resource, validate the reasonable resource sorts.It was gained the result of the resource apportionment of the chengdu by using the PMF mothod,compared with the CMB.This supplied the theory for the environmental agency in chengdu. It point out the direction of control the PM2.5.