Table 2 Mean Day 1 pollutant physicochemical parameters during the four exposure scenarios
From: Diesel exhaust modulates ozone-induced lung function decrements in healthy human volunteers
Parameter | Air | O3 | DE | DE + O3 |
|---|---|---|---|---|
PM (μg/m 3 ) a | 1.0 ± 1.5 | 1.0 ± 1.1 | 297. 1 ± 20.8 | 294.3 ± 20.1 |
PM # (x10 3 /cc) | <1 | <1 | 731 ± 90b (11) | 734 ± 50b (11) |
|  |  |  | 977 ± 55c (4) | 903 ± 306c (4) |
Median PM size | Â | Â | Â | Â |
Volume (μm) | ----- | ----- | 0.200 ± 0.007 | 0.200 ± 0.007 |
Number (μm) d | ----- | ----- | 0.064 ± 0.006 | 0.066 ± 0.003 |
O 3 ppm | 0.00 ± 0.00 | 0.30 ± 0.00 | 0.01 ± 0.00 | 0.30 ± 0.00 |
CO (ppm) | 0.09 ± 0.10 | 0.09 ± 0.10 | 2.58 ± 0.25 | 2.51 ± 0.32 |
NO (ppm) | 0.00 ± 0.01 | 0.01 ± 0.03 | 1.58 ± 0.26 | 0.03 ± 0.04 |
NO2 (ppm) | 0.00 ± 0.00 | 0.00 ± 0.00 | 0.16 ± 0.05 | 1.72 ± 0.22 |
THC (ppm) | 2.05 ± 0.10 | 1.98 ± 0.10 | 2.35 ± 0.14 | 2.24 ± 0.19 |
SO2 (ppm) | <0.010 | <0.010 | 0.013 | <0.010 |