Program 91: Assessment Tools for Ozone, Particulate Matter, and Haze

• Secondary Particulate Health Effects Research (SPHERES):  Exploring the Influence of SO2, NOx and Acids on the Chemistry and Health Effects of PM-2.5 
• Regional PM Characterization to Enable Source-Receptor Modeling: Data Collection
• Theoretical, Experimental, and Ambient Studies of Particulate Oligomers and Organic-Nitrogen Species (TEASPOONS): A Health Impact Perspective