Secondary Organic Aerosols from Gasoline Powered Vehicles

Service Oriented Architecture

Gasoline emissions dominate over diesel in formation of secondary organic aerosol mass (Roya Bahreini, Ann M. Middlebrook, Joost A de Gouw, Carsten Warneke, Michael K. Trainer, Charles A. Brock, Harald Stark, Steven S. S Brown, William P. P Dube, Jessica B. Gilman, katharine Hall, John S. S. Holloway, William C. Kuster, Anne E. Perring, Andre S.H. Prevot, Joshua Peter Schwarz, J. Ryan Spackman, Soenke Szidat, Nicolas L. Wagner, Rodney J. Weber, Peter Zotter, David D. D. Parrish, Abstract, Geophysical Research Letters, Feb. 26, 2012)

Also discussed here: Gasoline Worse Than Diesel When It Comes to Some Types of Air Pollution (Science Daily, Mar. 2, 2012)

Today, we review some research from Los Angeles that examines the contribution of diesel emissions to the formation of secondary organic aerosols (SOA), tiny particles that make up most of the aerosol component of urban air pollution and highly harmful to health. The authors concluded that diesels contribute next to nothing to the SOA.  The result is that even greater attention has to be paid to reducing gasoline emissions, previously thought to be less serious a health threat than diesel emissions.

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