Our research program centers on discovering the reaction pathways and mechanisms governing the environmental fate, transformation, and toxicological impacts of complex chemical systems. We integrate simulated laboratory studies under rigorously controlled conditions with field sampling, in vitro toxicology, and geochemical modeling — connecting molecular-level chemistry to real-world environmental and human health outcomes.

Three interconnected themes run through all our work. We investigate how environmental particles — mineral dust, engineered nanoparticles, mine dust, and wildfire smoke — interact with atmospheric gases, aqueous systems, and biological fluids to drive chemical transformations of ecological and health significance. We assess the bioaccessibility and toxicity of the species produced by these transformations, from emerging contaminants such as PFAS and PPCPs to toxic metals leached from mine tailings and wildfire ash. And we develop advanced porous materials — particularly metal–organic frameworks — that exploit these mechanistic insights to address environmental challenges including CO₂ capture and selective gas separation.