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Home > News > Toxicity of nanoparticles in aquatic environments

September 6th, 2007

Toxicity of nanoparticles in aquatic environments

Abstract:
The much heralded nanotechnology revolution is not happening with a big bang that completely turns our lives upside down, but rather in a creeping stealth mode where many ordinary everyday products, from cosmetics and textiles to electronic devices, sporting goods and car paint increasingly contain engineered nanoparticles. Sometimes, these nanoparticles are just a smaller version of the material already used in a product, for instance zinc oxide in sunscreen lotions, sometimes these particles are a new addition to a product, as for example fullerenes added to oil lubricants to improve their performance. This trend of increasing use of engineered nanoparticles in commercial products raises the question of what happens at the end-of-life stage of these products, when they get disposed or recycled. Is there is a risk of these nanoparticles being released into the environment? And if yes, is there a risk of these nanoparticles causing harm? These is an area of nanotechnology risk research that remains largely unexplored. In a groundbreaking study to determine the effects of nanoparticles on aquatic organisms, scientists at the University of Wisconsin's Great Lakes Water Institute in Milwaukee have demonstrated that all nanoparticles are not created equal - at least when it comes to their effects on aquatic organisms. They have also discovered that existing attitudes toward the safety of titanium dioxide may be dangerous.

Source:
nanowerk.com

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