Table 5.
Results of canister sampling at the source and time of an odor complaint compared to outdoor source locations.
| Substance | Outdoor Air | Indoor Air | |
|---|---|---|---|
| Helicopter (n = 3) a | Power Supply (n = 3) a | Location of Complaint (n = 2) b | |
| Acetone | 6.9 ± 0.9 | <0.1 | 9.18 ± 2.7 |
| Benzene | <0.1 | 10.2 ± 5.2 | <0.1 |
| Ethanol | 8.3 ± 2.0 | <0.1 | 73.05 ± 51.3 |
| Ethylbenzene | <0.1 | 4.4 ± 1.0 | 0.35 ± 0.30 |
| Isopropanol | 75.6 ± 17.0 | <0.1 | 73.73 ± 42.8 |
| Toluene | 0.2 ± 0.01 | 39.0 ± 12.2 | 0.20 ± 0.01 |
| m-Xylene | <0.1 | 5.7 ± 1.1 | 0.43 ± 0.38 |
| p-Xylene | <0.1 | 0.43 ± 0.38 | |
| o-Xylene | <0.1 | 6.2 ± 2.0 | 0.43 ± 0.38 |
a Source samples downwind at 2.5, 4.5 and 6.5 m over a period of 75 min. b Grab sample collection indoor by self-assessment, performed by the person who reported the odor.