Today, it's unknown if nanomaterials under development are dangerous to human beings or to our environment. Some people think that nanoparticles can move to our lungs or our brains, presenting a significant threat to our health. Other scientists think there is no danger because we have been exposed to nanoparticles for thousands of years, such as ashes from volcanic eruptions. So it's interesting to read in Occupational Hazards that using our knowledge of asbestos could help us to assess the risks from nanoparticles, or their nanotoxicity. For example, nanotubes which are now used for many industrial developments, have similar shapes as fibers like asbestos, being long and extremely thin. And like nanomaterials today, asbestos was considered as harmless when humans were exposed to it. While the comparison has some merit, more research needs to be done before drawing any conclusion. Read more...
Sources: Josh Cable, Occupational Hazards, October 18, 2005; and various web sites
You'll find related stories by following the links below.
7:05:58 PM
Permalink
|
|
