Atmospheric nanoparticles (aerosols) adversely affect human health by damaging the respiratory and cardiovascular systems, and they are implicated in 50,000 deaths per year in the United States alone. Our research focuses on better understanding the formation, transformation and properties of aerosols, helping to develop effective policy actions aimed at mitigating aerosol concentrations and their adverse effects.

We conduct laboratory chamber experiments simulating the atmosphere as well as ambient measurements. We utilize newly developed, state-of-the art instruments and techniques to probe the chemical and physical properties of aerosols. Experimental results can be used in chemical transport models which can help inform policy makers


We use several instruments to identify and quantify species in the gas and particle-phase, including a High-Resolution Time of Flight Chemical Ionization Mass Spectrometer (HR-ToF-CIMS) coupled to a particle collector and an aerosol chemical speciation monitor (ACSM).