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Table 2 Description of particle matters and particle sizes

From: Building an indoor air quality monitoring system based on the architecture of the Internet of Things

Particle size (μm) Name Description
< 2.5 Fine particulate matters (PM2.5) Entering the bloodstream directly through alveoli
2.5–10 Coarse particulate matters (PM2.5–10) Being inhaled by the human respiratory system
< 10 10 μm particle matters (PM10) Through the nasal cavity to the throat
< 100 Total suspended particulates (TSP) Beach sand being suspended in the air