Research Program Area: Atmospheric Processes
Topic Areas: Chemistry & Reactivity
Objectives: To develop methods of identifying potentially toxic and mutagenic compounds in the gaseous (vapor) phase of ambient air.
Findings: The feasibility of a new system to chemically characterize a complex volatile mixture was demonstrated and applied to diesel bus exhaust. Results indicated that mutagenic activity in vapor-phase exhaust gases was greater than that in particulate phase exhaust.
Importance to ARB's Program: The Health and Safety Code requires the ARB to identify toxic air contaminants. The methods developed in this project will help the ARB determine which vapor-phase compounds are the most important candidate toxic air contaminants.
For questions regarding this research project, including available data and progress status, contact: Research Division staff at (916) 445-0753
Stay involved, sign up with CARB's Research Email Distribution List