Table II.
Air concentrations of diesel engine exhaust components among exposed workers and controls
| Exposure | Control (n=46) | Exposed worker (n=41) |
|---|---|---|
| PM2.5 (mg/m3, mean±SD) | ||
| Background adjusted | 0 | 0.15±0.07 |
| Unadjusted | 0.20±0.07 | 0.37±0.07 |
| Elemental carbon (μg/m3, mean±SD) | ||
| Background adjusted | 0 | 47.0±24.0 |
| Unadjusted | 11.1±1.3 | 58.1±24.0 |
| Organic carbon (μg/m3, mean±SD) | ||
| Background adjusted | 0 | 69.4±27.2 |
| Unadjusted | 68.7±4.1 | 138.1±27.2 |
Unadjusted values are original measurements. Adjusted values reflect background outdoor levels in this region.