Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > Nanoparticles from sunscreens damage microbes

March 24th, 2009

Nanoparticles from sunscreens damage microbes

Abstract:
Nanoparticles in sunscreens, cosmetics and other consumer products may pose risks to the environment by damaging beneficial microbes, scientists reported Tuesday. Nano-titanium dioxide found in personal care products reduced biological roles of bacteria after less than an hour of exposure. The findings suggest that these particles, which easily end up at sewage treatment plants after being washed off in showers, could eliminate microbes that play vital roles in ecosystems and help treat wastewater.

In the paper presented Tuesday at the annual conference of the American Chemical Society in Salt Lake City, researchers Cyndee Gruden and Olga Mileyeva-Biebesheimer added varying amounts of nanoparticles to water containing bacteria. The bacteria were grown in a lab and stained with a green fluorescent. The scientists saw significant damage to the bacteria's cell walls after adding 10 to 100 milligrams per liter of the nano-substance. The cell membranes changed from green fluorescent to a faint red glow, which indicates damage.

Source:
Environmental Health News

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Dr. Cyndee L. Gruden, Ph.D., PE

Related News Press

News and information

Feynman Prize Winners Announced! April 26th, 2015

New ASTM Standards Will Help Educate Present and Future Nanotechnology Workforces April 26th, 2015

Heat makes electrons’ spin in magnetic superconductors April 26th, 2015

QD Vision Wins 2015 Bronze Edison Award for Color IQ™ Quantum Dot Technology April 26th, 2015

Environment

Nanoparticles Used to Improve Mechanical, Thermal Properties of Cellulose Fibers April 23rd, 2015

Young NTU Singapore spin-off clinches S$4.3 million joint venture with Chinese commercial giant March 23rd, 2015

New processing technology converts packing peanuts to battery components March 22nd, 2015

EU Funded PCATDES Project has completed its half-period with success March 19th, 2015

Safety-Nanoparticles/Risk management

MIPT researchers put safety of magic anti-cancer bullet to test April 6th, 2015

NNI Publishes Workshop Report Assessing the Status of EHS Risk Science: Report examines progress three years after the release of the 2011 NNI EHS Research Strategy March 23rd, 2015

Are current water treatment methods sufficient to remove harmful engineered nanoparticle? March 10th, 2015

More study needed to clarify impact of cellulose nanocrystals on health: Few studies explore toxicity of cellulose nanocrystals March 10th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project