Research Article
Particulate Emissions Hazards Associated with Fueling Heat Engines
Table 1
Particulate sizes classified by aerodynamic diameter.
| Classification | Examples |
| Coarse: 2.5–10 μm (PM10) | Road and agricultural dust, tire wear | Fine: <2.5 μm (PM2.5) | Gas to particulate conversion in combustion and industrial processing | Ultrafine: <0.1 μm (<100 nm)-nanomaterial particulates | Exhaust emissions (tailpipe), such as aircraft HCfueled mobility/stationary systems |
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