Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Landmark Study on Nanomaterials and the Environment

Abstract:
University of South Carolina study finds manmade nanoparticles could contaminate marine food web

Landmark Study on Nanomaterials and the Environment

Posted on June 29th, 2009

Too tiny to see or touch, manmade nanoparticles are increasingly becoming a byproduct of industry and chemical and pharmaceutical technology.

But once these super small materials enter the water supply, do they reach coastal areas and enter marshes and tidal zones, the complex environments where shellfish and finfish grow?

Researchers at the University of South Carolina's Nanocenter, working with scientists at the National Oceanic and Atmospheric Administration in Charleston, examined whether gold nanorods could readily pass from water to the marine food web.

Their findings, published online at Nature Nanotechnology, suggest that nanoparticles move easily into the marine food web and are absorbed in grasses, trapped in biofilms and consumed by filter feeders, such as clams.

"This is the first study to report on the fate of gold nanoparticles in a complex ecosystem containing sediments, biofilms, grasses, microscopic organisms, filter feeders and omnivores," said environmental chemist Dr. John L. Ferry of the University of South Carolina.

The gold nanorods were used in the study because of their ability to be traced, he said.

For the experiment, scientists at NOAA's Coastal Center for Environmental Health and Biomolecular Research created three estuarine mesocosms, experimental enclosures replicating a coastal ecosystem. In developing the coastal "labs," NOAA scientists constructed a tidal marsh creek, containing natural, unfiltered water from Wadmalaw Island; planted Spartina grass in sedimnents; and added clams, mud snails and grass shrimp. The gold nanorods were synthesized by researchers at USC and introduced into the ecosystems. At the end of the experiment, the USC team developed the techniques necessary to measure the fate of the nanoparticles and found that clams and biofilms accumulated the most.

"As the first experiment of its kind, we really didn't know what to expect," said Dr. Geoff Scott, (Director of Center for Coastal Environmental Health and Biomolecular Research NOAA/NOS), who collaborated with Dr. Michael Fulton, (Estuaries and Land Use Acting Branch Chief, Center for Coastal Environmental Health and Biomolecular research/NOAA) . "This study enabled us to understand how these nanomaterials were transported through the ecosystem."

The research has implications for all coastal environments and will provide a baseline for future studies on the environmental impact of nanomaterials, Scott said.

The study is significant because it shows that manmade nanoparticles can enter the estuarine food and ultimately could find their way into the shellfish and fish that humans eat, said Ferry.

"This study is a road map for where we go next," he said. "We did not look at what happens ‘up the food chain.'"

"This landmark study points towards things to come in the near future", say Tom Vogt, Director of the NanoCenter at the University of South Carolina, "when we will enlarge our national and international R&D footprint even more by developing the recently endowed Center of Economic Excellence for Nanoenvironmental Research and Risk Assessment."

####

About University of South Carolina
The NanoCenter is the University’s focal point for science and engineering studies of nanometer-scale structures, their unique properties, and their integration into functional units. It fosters multidisciplinary research and education efforts involving faculty whose combined expertise spans the disciplines of a comprehensive research university, including the arts and sciences, engineering, and medicine, as well as other professional schools.

For more information, please click here

Contacts:
120 Sumwalt College
University of South Carolina
1212 Greene Street
Columbia, SC 29208
803.777.9927

Copyright © University of South Carolina

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Chemistry

Anti-microbial coatings with a long-term effect for surfaces – presentation at nano tech 2015 in Japan January 21st, 2015

Hydrogels deliver on blood-vessel growth: Rice researchers introduce improved injectable scaffold to promote healing January 20th, 2015

Graphene enables all-electrical control of energy flow from light emitters: First signatures of graphene plasmons at telecommunications wavelength revealed January 20th, 2015

Nanotechnology Used to Produce Ceramic Membrane with High Thermal Stability January 19th, 2015

Preparing for Nano

Durnham University's DEEPEN project comes to a close September 26th, 2012

Technical Seminar at ANFoS 2012 August 22nd, 2012

Nanotechnology shows we can innovate without economic growth April 12th, 2012

Thailand to host NanoThailand 2012 December 18th, 2011

Announcements

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Engineering self-assembling amyloid fibers January 26th, 2015

Food/Agriculture/Supplements

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

Transparent artificial nacre: A brick wall at the nanoscale January 22nd, 2015

Anti-microbial coatings with a long-term effect for surfaces – presentation at nano tech 2015 in Japan January 21st, 2015

Environment

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Magnetic Nanosorbents Able to Eliminate Chemical Contaminants January 19th, 2015

Malaysian Nanotechnology Company Nanopac Innovation Ltd. lists on the NSX January 19th, 2015

Iran Designs Magnetic Nano-Absorbents Cleaning Chemical Pollutants January 11th, 2015

Personal Care

Sunblock poses potential hazard to sea life August 20th, 2014

AQUANOVA receives Technology Leadership Award 2014 FROST & SULLIVAN honors NovaSOL® Technology again August 12th, 2014

Nanotechnology used in sunscreens: a Mexican achievement May 14th, 2014

Production of Nanocapsule from Sea-Buckthorn Extract in Iran May 3rd, 2014

Safety-Nanoparticles/Risk management

A spoonful of sugar in silver nanoparticles to regulate their toxicity January 21st, 2015

Nutrition, Safety Key To Consumer Acceptance of Nanotech, Genetic Modification In Foods December 2nd, 2014

Sustainable Nanotechnologies Project November 20th, 2014

A gut reaction November 19th, 2014

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







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE