BENZO(A)PYRENE EMISSIONS FROM GASOLINE AND DIESEL AUTOMOBILES
A data base was obtained for comparing the benzo(a)pyrene (BaP) emission rates from diesel automobiles with those from current-production, catalyst and noncatalyst gasoline automobiles. Exhaust particulate samples were collected on filters, using a large emission tunnel. The extractable portion of the exhaust particulate was removed by Soxhlet extraction, with a mixture of benzene and ethanol. The BaP determination was made by high-performance liquid chromatography, using fluoresence detection. The BaP emission rate from on Oldsmobile diesel car was the same as the average rate from seven noncatalyst gasoline cars, 2.7 micrograms per mile. The BaP mass concentration in the diesel particulate was five parts per million, about twenty times lower than in noncatalyst gasoline particulate. BaP emission rates showed no simple correlation with hydrocarbon or carbon monoxide emission rates. The catalytic converter reduced BaP emission by more than 95% on gasoline cars, but had no effect on BaP emission from a diesel car.
- From the February 26-March 2, 1979 Meeting.
Warrendale, PA USA 15096
- Williams, R L
- Publication Date: 1979
- Features: References;
- Pagination: 6 p.
- Society of Automotive Engineers Preprint
- Publisher: Society of Automotive Engineers
- TRT Terms: Air pollution; Alternatives analysis; Benzene; Catalytic converters; Diesel engines; Exhaust gases; Gasoline engines; Internal combustion engines; Particulates; Vehicle power plants
- Old TRIS Terms: Automobile engines; Benzo(A) pyrene emissions
- Subject Areas: Highways; Vehicles and Equipment;
- Accession Number: 00301479
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: SAE 790419 Conf Paper
- Files: TRIS
- Created Date: Nov 27 1979 12:00AM