Table 3.
The number of differentially methylated probes (DMPs) of cumulative effects (lag 0–27d) from exposure to PM2.5 and its elements in the site-by-site analyses.
| Particles | Number of DMPs | |
|---|---|---|
| Sources | PM2.5 mass | 2,717 |
| Motor vehicles | BC | 394 |
| Cu | 615 | |
| Pb | 3,173 | |
| Zn | 281 | |
| Oil combustion | Ni | 24 |
| V | 20 | |
| Road dust | Ca | 2 |
| Fe | 164 | |
| Soil | Al | 31 |
| Si | 19 | |
| Wood burning | K | 343 |
| Power plants | S | 270 |
| Sea salt | Na | 1,707 |
Abbreviations: PM2.5, particulate matter with an aerodynamic diameter ≤ 2.5 µm; BC, black carbon; Cu, copper; Pb, lead; Zn, zinc; Ni, nickel; V, vanadium; Ca, calcium; Fe, iron; Al, aluminum; Si, silicon; K, potassium; S, sulfur; Na, sodium; DMP, differentially methylated probes.