Table 2 Elemental concentrations of PM2.5 particle during the exposure
| Â | Ambient air | Exposure to PM 2.5 | ||
|---|---|---|---|---|
| Â | Mean | s.d. | Mean | s.d. |
S | 1142.2 | 1045.7 | 10167.9 | 8038.0 |
Al | 244.9 | 145.2 | 1297.9 | 571.0 |
Si | 70.0 | 60.1 | 1166.9 | 918.7 |
Ca | 37.9 | 37.8 | 631.7 | 519.5 |
Fe | 27.5 | 20.5 | 403.5 | 211.6 |
Mg | 64.6 | 73.3 | 365.0 | 281.7 |
K | 49.3 | 24.0 | 358.4 | 216.1 |
Na | 17.6 | 38.4 | 262.8 | 332.1 |
P | 21.5 | 40.6 | 250.6 | 260.9 |
Cl | 6.2 | 12.2 | 155.8 | 161.0 |
In | 6.8 | 11.2 | 147.5 | 166.8 |
Sb | 19.4 | 15.1 | 141.7 | 127.4 |
Ba | 34.1 | 29.9 | 126.7 | 76.9 |
Zn | 5.7 | 4.6 | 55.6 | 40.2 |
Cs | 17.4 | 18.9 | 54.5 | 49.0 |
Cd | 7.7 | 31.1 | 44.5 | 185.6 |
Sc | 10.8 | 7.8 | 39.5 | 23.1 |
Co | 10.0 | 7.3 | 35.2 | 21.9 |
Br | 6.5 | 3.3 | 33.9 | 12.7 |
Se | 8.1 | 5.6 | 28.2 | 15.0 |
I | 5.7 | 15.7 | 28.2 | 55.6 |
V | 8.5 | 5.0 | 27.2 | 12.9 |
Mn | 4.1 | 6.0 | 24.9 | 18.8 |
Ti | 1.8 | 2.4 | 22.2 | 20.0 |
Pb | 4.4 | 6.4 | 21.5 | 21.8 |
As | 4.3 | 5.2 | 18.2 | 14.9 |
Rb | 4.5 | 2.7 | 13.7 | 7.2 |
Ge | 3.5 | 4.7 | 11.9 | 11.7 |
Cr | 1.4 | 2.2 | 11.5 | 24.7 |
Sr | 2.4 | 2.0 | 11.3 | 6.2 |
Ga | 2.0 | 3.7 | 11.1 | 10.7 |
Te | 2.8 | 7.5 | 10.3 | 36.6 |
Ni | 3.0 | 2.5 | 9.8 | 6.9 |
Sn | 10.5 | 3.0 | 5.6 | 17.4 |
Cu | 1.6 | 1.3 | 3.8 | 8.5 |