Table 1.
Characterization of diesel exhaust particle and gaseous compounds in the chambers.
| Chamber | Particles | Temperature | Relative Humidity | |||
|---|---|---|---|---|---|---|
| Size (nm) | Particles Number (cm−3) | Concentration (µg/m3) | (°C) | (%) | ||
| Clean air | -- | 2.90 ± 0.43 | 15.70 ± 0.63 | 21.99 ± 0.08 | 52.99 ± 0.38 | |
| DE-SOA | 32.78 ± 0.87 | 3.16 × 106 ± 6.18 × 104 | 113.99 ± 3.06 | 22.08 ± 0.10 | 50.77 ± 0.68 | |
| DE | 31.48 ± 0.71 | 3.28× 106 ± 4.52 × 104 | 97.69 ± 3.60 | 22.02 ± 0.07 | 51.35 ± 0.65 | |
| Chamber | Gaseous Compounds | |||||
| CO (ppm) | SO2 (ppm) | NOx (ppm) | NO2 (ppm) | NO (ppm) | CO2 (%) | |
| Clean air | 0.33 ± 0.05 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.05 ± 0.00 |
| DE-SOA | 2.61 ± 0.08 | 0.00 ± 0.00 | 1.39 ± 0.02 | 1.09 ± 0.03 | 0.29 ± 0.03 | 0.07 ± 0.00 |
| DE | 2.52 ± 0.08 | 0.01 ± 0.00 | 1.33 ± 0.03 | 0.43 ± 0.01 | 0.90 ± 0.02 | 0.07 ± 0.00 |
Data were expressed as mean ± SD; Number of experimental replicates: gaseous compounds = 59; particle size and numbers = 11; mass cincentration = 2.