CHED 1127 |
| Catalytic converters have been instrumental in reducing major pollutant exhaust emissions from on-road vehicles and have played a significant role in improving air quality. However, secondary reactions on the catalyst may produce unregulated emissions (e.g., hydrogen cyanide, and ammonia) that could have an adverse impact on human health and the environment. These compounds have received little attention in the past and their presence in vehicle exhaust, even at low concentrations, could lead to significant adverse health effects. The goal of this project is to investigate (chemically-)reduced nitrogen compound (RNC) emission rates from in-use light duty motor vehicles and to estimate the associated health risks in terms of exposure. We have designed and tested methods and instrumentation for the collection and measurement of trace amounts of amines in car exhaust. Amines are collected using impingers, derivatized, and then analyzed using GC/MS. Results from on-road studies will be presented. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |