ABSTRACT
Today nanoparticles and nanomaterials are used in many applications and commonly used in many areas, e.g., health care, electronics, chemistry, foodstuffs, automotive manufacture, energy production, cosmetics, fabrics, sensors, etc. Workers and consumers are often exposed to nanoparticles and nanomaterials. Assessing the risk on human health and the environment generated by these technologies is important but not simple because nanoparticles or nanomaterials can have properties different from those of macroscopic samples of the same materials. They are generally more reactive because they have a much larger surface of interaction.
