2024 No Sources and health risks of heavy metals in kindergarten dust: The role of particle size https://doi.org/10.1016/j.envres.2024.119955 Wang, Peng Asia Exposure Modeling Observational Students Elementary (K-5) Heavy metals Particulate Matter (PM) Dust Other health risk Heavy metals kindergarten dust Particle-size effect Source apportionment Analyzing Beijing kindergarten dust, the study measures heavy metal concentrations across particle sizes, applying health risk models and source apportionment to reveal that mid-sized dust (DT100) carries the highest contamination, largely from chromium, emphasizing size-driven contamination patterns. 2024