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Appendix 2 Air Pollutants |
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Exposure risks for selected air pollutants.
Air Pollutant |
Lifetime cancer risks at 1 mg/m3 |
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Acetaldehydea
|
(1.5–9) x 10–7 |
| Acrylonitrilea |
2 x 10–5 |
| Benzenea |
4 x 10–6 |
| Chloroforma |
4 x 10–7 |
| 1,2-Dichloroethanea |
(0.5–2.8) x 10–6 |
| 1,1,2,2-Tetrachloroethanea |
(0.6–3.0) x 10–6 |
| Trichloroethylenea |
4.3 x 10–7 |
| Vinylchloridea |
1 x 10–6 |
| Diesel exhaust |
(1.6-7.1) x 10–5 |
| Environmental Tobacco Smoke |
10–3 |
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a Carcinogens.
Air Pollutant - VOCs |
Guideline(mg/m3) |
Averaging time |
|
| Acrylic acid |
54 |
1 year |
| 2-Butoxyethanol |
13,000 |
1 week |
| Carbon tetrachloride |
6 |
1 year |
| Chlorobenzene |
71 |
1 year |
| 1,4-Dichlorobenzene |
134 |
1 year |
| Dichloromethane |
3000 |
24 hours |
| Ethylbenzene |
22,000 |
1 year |
| Formaldehyde |
100 |
30 minutes |
| Methyl methacrylate |
200 |
1 year |
| Styrene |
260 |
1 week |
| Styreneb |
7 |
30 minutes |
| Tetrachloroethylene |
250 |
24 hours |
| Toluene |
260 |
1 week |
| 1,3,5-Trichlorobenzene |
36 |
1 year |
| 1,2,4-Trichlorobenzene |
8 |
1 year |
| Xylene isomers |
870 |
1 year |
| Diesel exhaust |
5.6 |
1 year |
| Manganese |
0.15 |
1 year |
| Mercury (inorganic) |
1 |
1 year |
| Vanadium |
1 |
24 hours |
| Sulfur dioxide |
500 |
10 minutes |
| |
125 |
24 hours |
| |
50 |
1 year |
| Nitrogen dioxide |
200 |
1 hour |
| |
40 |
1 year |
| Carbon monoxide |
90ppm |
15 minutes |
| |
50ppm |
30 minutes |
| |
25ppm |
1 hour |
| |
10ppm |
8 hours |
| Ozone |
120 |
8 hours |
| Susp. Particulates |
risk est |
- |
| Lead |
0.5 |
1 year |
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b Based on sensory effects or annoyance reactions.
Content Updated March 2005
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Last Updated ( Friday, 25 July 2008 )
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