Health Assessment Document for Diesel Emissions - NSCEP | US ...
Health Assessment Document for Diesel Emissions - NSCEP | US ...
Health Assessment Document for Diesel Emissions - NSCEP | US ...
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Compound<br />
Hydrocarbons<br />
Table 2-15. Concentrations of individual hydrocarbons and aldehydes measured<br />
in the Raleigh, NC, roadside studya<br />
Ethane<br />
Ethylene<br />
Acetylene<br />
Propane<br />
Propylene<br />
n-Butane<br />
1-Butene<br />
n-Pentane<br />
iso-Pentane<br />
Methylcyclopentane<br />
Me thy lcyclohexane<br />
n-Decane<br />
Benzene<br />
Toluene<br />
m- and p-Xylenes<br />
a-Xylene<br />
Ethylbenzene<br />
TNMHCd<br />
Total paraffins<br />
Total olefms<br />
Total aromatics<br />
Total unidentified NMHC<br />
Aldehydes<br />
Formaldehyde<br />
Acetaldehyde<br />
Acrolein<br />
. Benzaldehyde<br />
Total aldehydes<br />
Concentration (ppbC) Percent contributionb,c<br />
16.30 1.81<br />
64.30 7.15<br />
50.90 5.65<br />
7.90 0.88<br />
22.60 2.51<br />
15.80 1.75<br />
5.70 0.64<br />
25.40 2.82<br />
53.00 5.89<br />
10.40 1.15<br />
4.70 0.53<br />
3.00 0.33<br />
29.00 3.23<br />
59,30 6.60<br />
53.10 5.90<br />
12.70 1.41<br />
12.00 1.33<br />
900.00 100.00<br />
369.20 41.00<br />
164.50 18.20<br />
252.00 28.00<br />
63.60 7.10<br />
6.74 1.05<br />
3.00 18.40<br />
1.20 7.30<br />
2.31 3.88<br />
16.38 100.00<br />
'From Zweidinger et al. (1988).<br />
hPercent based on ppbC.<br />
'Percent contribution of individual hydrocarbons to TNMHC and of individual aldehydes to total aldehydes.<br />
"TNMHC = Total nonmethane hydrocarbons.<br />
2/1198 2-48 DRAFT--DO NOT CITE OR QUOTE
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