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Citation
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HERO ID
45142
Reference Type
Journal Article
Title
General Motors sulfate dispersion experiment: Summary of EPA measurements
Author(s)
Wilson, WE; Spiller, LL; Ellestad, TG; Lamothe, PJ; Dzubay, TG; Stevens, RK; Macias, ES; Fletcher, RA; Husar, JD; Husar, RB; Whitby, KT; Kittelson, DB; Cantrell, BK
Year
1977
Is Peer Reviewed?
Yes
Journal
Journal of the Air Pollution Control Association
ISSN:
0002-2470
Volume
27
Page Numbers
46-51
Language
English
DOI
10.1080/00022470.1977.10470391
Abstract
In October 1975, General Motors sponsored a study of sulfate exposures utilizing a fleet of catalyst equipped motor vehicles in controlled, simulated, highway driving conditions. This paper reports some EPA sponsored measurements. Sulfuric acid aerosol, in the Aitken nuclei mode, geometric mean diameter (GMD) of about 0.02 Ám, is emitted in the exhaust of catalyst equipped vehicles. Measurement of sulfuric acid 20 m downwind of the roadway indicated a lack of complete neutralization by ammonia. When the wind was perpendicuiar to the roadway there was little coagulation of sulfuric acid Into the accumulation mode, GMD of about 0.24 Ám. From measurement of the mass flow rate of aerosol sulfur from the simulated freeway, the aerosol sulfur emission rate per car was determined to be 3.5 + 0.8 Ág/m (5.6 + 1.3 mg/mile) corresponding to a 12 + 3% conversion of fuel sulfur into emitted aerosol sulfur.
Tags
IRIS
•
Ammonia
Literature Search – March 2012 (private)
Literature Search Results
NAAQS
•
ISA-PM (2019)
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