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.
The standard
aerosol generation is important for the PM2.5 monitors calibration. Various
techniques are known for aerosol generation such as Atomization method,
Fluidized Bed method and Agglutination method.
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