The atmospheric aerosol generally refers to a suspension of liquid or solid particles in the atmosphere,with particle diameters ranging in size over more than four orders of magnitude,from 10-9 m to 10-4 m [1].As we know,the aerosols not only influence the energy budget of the Earth,the hydrological cycle,global and regional climate by their direct and indirect radiation forcing but also play an important role in the spreading of biological organisms and pathogens which can cause some serious public health issues,for instance,respiratory,cardiovascular,and infectious diseases [2].