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Atmospheric Transformation of Diesel Emissions

Research Report 147,
2010

This report describes a study by Dr. Barbara Zielinska and colleagues to investigate the changes that fresh diesel emissions undergo when they are mixed with ambient air, due to reactions with sunlight and other pollutants. The investigators also evaluated how those changes may affect the toxic properties of diesel emissions. The study used a relatively new (2003 model) light duty diesel engine (although not one with a diesel filter) and provides insight into the complexity of diesel exhaust composition in the real world.