Table 1. Chemical mass constituents in size-segregated ambient PM collected between the 2012 winter and 2013 summer seasons.
| PM0.1 | PM1 | PM2.5 | PM10 | |
|---|---|---|---|---|
| Collected mass (mg) | 1.87 | 19.48 | 26.17 | 40.88 |
| Ionic components (μg/mg) | ||||
| Na+ | 3.44 | 3.84 | 13.72 | 31.73 |
| K+ | 6.92 | 13.19 | 12.67 | 10.78 |
| Mg2+ | 1.33 | 0.59 | 2.08 | 4.92 |
| Ca2+ | 7.87 | 1.49 | 3.34 | 14.68 |
| Cl- | 5.12 | 2.78 | 9.77 | 18.90 |
| NH4+ | 11.31 | 125.34 | 119.93 | 75.76 |
| NO3- | 17.46 | 49.37 | 87.91 | 96.19 |
| PO43- | 7.47 | 1.37 | 1.68 | 1.45 |
| SO42- | 45.28 | 349.90 | 318.69 | 240.19 |
| Carbon species | ||||
| OC (μg/mg) | 314.02 | 120.51 | 166.74 | 126.14 |
| EC (μg/mg) | 47.53 | 53.05 | 46.31 | 41.60 |
| Endotoxin (EU/ml) | 62.44 | 53.66 | 55.05 | 122.27 |