Table 1.
DE exposure | FA exposure | |
---|---|---|
PM1 mass concentration (μg/m3) |
276±27 |
2±2 |
Number concentration (particles/cm3) |
388000±48000 |
14±16 |
NO (ppm) |
9.8±1.0 |
0.003±0.001 |
NO2 (ppm) |
1.3±0.4 |
0.002±0.001 |
CO2 (ppm) |
1945±125 |
947±67 |
Formaldehyde (μg/m3) |
400±97 |
7.5 |
Temperature (°C) | 22.7±0.7 | 22.7±0.8 |
Values are mean ± standard deviation (SD).
DE, diesel exhaust; FA, filtered air.