There is a great concern in the society about exposure to airborne metal particles due to the increasing use of engineered
nanoparticles and remaining high contribution of unintentionally spread particles in the air. We study the toxicity of airborne particles in new
in vitro exposure systems that mimic a real inhalation scenario where airborne particles are deposited directly onto cells. The influence on the toxicity of particle
characteristics e.g. size, concentration, chemical composition, surface reactivity and metal release is characterized.