Identifying Health Risks from Airborne Toxic Metal Particles in Wildfire Smoke

Project Lead: Alireza Namayandeh

We investigate the chemical and physical composition and health implications of airborne particulate matter less than 2.5 microns (PM2.5) produced during wildfires and wildland–urban interface (WUI) fires. These events release complex mixtures of organic and inorganic particles that influence air quality and public health. To better understand the composition and behavior of PM2.5 from different fire types, we collect smoke and air samples from wildfires across the Western United States. In our laboratory, we use advanced microscopic and spectroscopic tools to analyze the size, morphology, and metal content of fine and ultrafine particles, focusing on elements such as iron, chromium, and lead that have known toxic and atmospheric impacts. By integrating field measurements, laboratory experiments, and community engagement, our research seeks to clarify how combustion conditions and fuel sources shape the chemical makeup of fire-derived aerosols and to assess their potential effects on air quality and human health.