| CAA | Clean Air Act |
| EPFR | Environmentally persistent free radical |
| EPR | Electron paramagnetic resonance |
| DEP | Diesel exhaust particles |
| GEP | Gasoline exhaust particles |
| PE | Poly(ethylene) |
| PET | Poly (ethylene terephthalate) |
| PM | Particulate matter |
| PM10 | Particulate matter (diameter < 10 μm) |
| PM2.5 | Particulate matter (diameter < 2.5 μm) |
| PP | Poly(propylene) |
| PS | Poly(styrene) |
| PVC | Poly(vinylchloride) |
| ROS | Reactive oxygen species |
| TSP | Total suspended particulates |
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