1976-02-01

Size Characterization of Sulfuric Acid Aerosol Emissions 760041

In the course of a vehicle dynamometer study of sulfur emissions from an automobile equipped with oxidation catalysts, aerosol size distribution measurements were made while the exhaust was rapidly mixed with 10 parts of filtered air in a dilution tube. Results obtained with an electrical aerosol analyzer show that, under these dilution conditions, the sulfuric acid aerosols are consistently smaller than 0.3 μm in diameter. The distribution of aerosol volume (or mass) is slightly bimodal with maxima near 0.03 and 0.09 μm particle diameters. When a light-scattering effect is computed from theory using the observed particle size distributions good agreement is obtained between theory and measured light scattering. Within a reasonable margin of error, consistency is found between cascade impactor data, nephelometer light-scattering data, electrical analyzer data, and chemical analyses for sulfate.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X