Nanotechnology

Although research in nanotechnology continues apace, relatively little is known about the subsequent health effects of exposure to nanoparticles. Major research efforts are underway both in the US and abroad to characterize the risks of such exposures.In addition to those occupationally exposed to nanoparticles, workers’ family members and consumers of products utilizing nanotechnology may be exposed. These materials may also present an environmental hazard.Researchers and employees in nanotechnology industries, their families, consumers and the general public may all be potentially exposed to nanoparticles. Toxicological effects are poorly understood, despite carefully controlled studies by respected scientists and institutions. Exposure is likely to occur through inhalation, ingestion and skin absorption. No current specific medical evaluation protocols exist for exposure to nanoparticles.Safe handling practices include ■engineering controls such as closed systems or hoods to prevent airborne material from reaching an employee's breathing zone,■respiratory protection, preferably supplied air, and■use of impervious gloves to prevent absorption through the skin.A rigorous risk control assessment should be performed before handling any nanomaterials.