Table 1 Exposure characteristics from the chamber compared with earlier performed study by Muala et al. [27]
Present study | Muala et al. [27] | ||
|---|---|---|---|
Exposure time | 2 h | 3 h | |
Unit | Mean ± SD | Mean ± SD | |
PM1 mass concentration (TEOM) | μg/m3 | 453 ± 13 | 314 ± 38 |
PM1 mass concentration (filter) | μg/m3 | 409 ± 43 | 294 ± 36 |
CO | ppm | 11 ± 2 | 25 ± 6 |
NO | ppm | 0.21 ± 0.09 | Not measured |
NO2 | ppm | 0.02 ± 0.01 | Not measured |
NOx | ppm | 0.23 ± 0.10 | 0.41 ± 0.12 |
EC/TC (elemental/total carbon) | ratio | 0.78 ± 0.07 | 0.72 ± 0.08 |
Organic fraction of total PM1 | % | 27 ± 8 | 24 ± 8 |
Soot fraction of total PM1 | % | 62 ± 8 | 38 ± 9.9 |
Inorganic fraction of total PM1 | % | 10 ± 3 | Not measured |