Particle Pollution
- Particle pollution, also known as particulate matter (PM), is a mixture of solid particles and liquid droplets suspended in the air.
- Categories of PM:
- PM10 to 2.5: Particles with diameters ranging from 2.5 to 10 micrometres (µm).
- PM2.5: Ultrafine particles with diameters less than 2.5 µm, capable of penetrating deep into the lungs, reducing lung function, aggravating asthma, etc.
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