Table 1 Types and sizes of PM
PM type | PM diameter [μm] | |
|---|---|---|
Particulate contaminants | Smog | 0.01–1 |
Soot | 0.01–0.8 | |
Tobacco smoke | 0.01–1 | |
Fly ash | 1–100 | |
Cement dust | 8–100 | |
Biological contaminants | Bacteria and bacterial spores | 0.7–10 |
Viruses | 0.01–1 | |
Fungi and molds | 2–12 | |
Allergens (dogs, cats, pollen, household dust) | 0.1–100 | |
Types of dust | Atmospheric dust | 0.01–1 |
Heavy dust | 100–1000 | |
Settling dust | 1–100 | |
Gases | Different gaseous contaminants | 0.0001–0.01 |