Particulates are typically classified based on their size:
- PM10: Particles with a diameter of 10 micrometers or less. - PM2.5: Particles with a diameter of 2.5 micrometers or less. - Ultrafine Particles: Particles with a diameter of 0.1 micrometers or less.
The size of particulates is crucial as it determines their ability to penetrate the respiratory system and cause health problems.
