How may workers potentially be exposed to nanoparticles?
Nanomaterials that can be inhaled, ingested or that can penetrate the skin will likely raise questions of potential health effects. Processes that lead to airborne nanometer-diameter particles, respirable nanostructured particles (typically smaller than 4 micrometers) and respirable droplets of nanomaterial suspensions, solutions and slurries are of particular concern for potential inhalation exposures.