The generation of standard aerosol is of vital importance for the PM2.5 monitors calibration. In this work, a PM2.5 standard aerosol generator with high-pressure mixing kettle, crystal kettle and nozzle was developed based on the Particle from gas saturated solutions (PGSS) approach. The preliminary experiment on the generator showed that more than 90% of the aerosol particles were smaller than 2.5 μm in diameter. This work can provide a theoretical basis for the PM2.5 monitors calibration.
Hu D*, Zhang Z, Guo B, Li B and Bi H