Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Potential environmental impact of nanoparticles studied through aluminum in soil

Abstract:
Nanoparticles offer multiple benefits to society in areas such as medicine, energy production and conservation, and pollution clean-up. Because nanoparticles is a relatively new technology area, we need to understand the dangers nanoparticles pose in the environment before their use becomes widespread. Environmental scientists are developing methods to assess nanoparticle distribution, fate, and toxicity in the environment. Naturally, a key part of the science relates to understanding how nanoparticles change once they interact with the environment

Potential environmental impact of nanoparticles studied through aluminum in soil

Brussels, Belgium & Pensacola, FL | Posted on June 16th, 2009

A case study in the June 2009 issue of Environmental Toxicology and Chemistry examines changes and transport in aluminum nanoparticles, currently used in energetics, alloys, coatings, and sensors, when they are exposed to relevant environmental conditions. In this study, nanoparticle suspensions were introduced into soil columns, where their concentration, size, agglomeration state, and particle charge were studied. Soil studies are important to understand exposure to plants and soil-dwelling organisms and the potential for nanoparticles to migrate into groundwater. A key finding was that characteristics of the nanoparticle and the environment interact to influence the distribution of the particles in the environment.

The present study demonstrated that the characteristics of nanoparticles are dynamic in the environment and that this is an important consideration for the design and interpretation of nanoparticle studies. The major factors influencing the transport of aluminum nanoparticles were agglomeration and surface charge. During this study, aluminum nanoparticles rapidly agglomerated, forming particles well outside the range of nanoparticles (i.e., micron size) especially when exposed to simulated groundwater. The increased size of the particles via agglomeration significantly reduced transport of the particles in soil columns.

Surface charges of the particles and the soil were also determining factors in the transport of nanoparticles in soil. Dramatic changes in the surface charge can be caused by changes in nanoparticle coating, surface treatment, and the characteristics of the media it is in. In this study, changing the water used in the soil columns from deionized water to simulated groundwater caused large changes in the surface charge of the aluminum nanoparticles and their ability to move through the soil columns. Typically, when particles have a surface charge similar to the matrix, they will be transported, and when the particle-matrix charges are opposite, the particles will remain in the matrix.

Studies like this will foster the development of models to predict the relationship between rates of agglomeration, size of the starting material, and charge of the nanoparticle and the matrix. This information is critical to determine how nanoparticles distribute in the environment and will help to explain uptake and toxicity to organisms in the environment and to man. Finally, identifying those factors that influence distribution in the environment can assist in designing nanoparticles that have limited transport potential and therefore limited impact on the environment.

The full text of this article, Nanoparticle Characteristics Affecting Environmental Fate and Transport Through Soil (Vol. 28, No. 6, June 2009) is available at www.allenpress.com/pdf/ENTC_28.6_1191-1199_.pdf

####

About Environmental Toxicology and Chemistry
Environmental Toxicology and Chemistry is a publication of the Society of Environmental Toxicology and Chemistry. It is interdisciplinary in scope and integrates the fields of environmental toxicology; environmental, analytical, and molecular chemistry; ecology; physiology; biochemistry; microbiology; genetics; genomics; environmental engineering; chemical, environmental, and biological modeling; epidemiology; and earth sciences. Emphasis is given to papers that enhance capabilities for the prediction, measurement, and assessment of the fate and effects of chemicals in the environment.

For more information, please click here

Contacts:
Media Contact:
Robin Barker
Allen Press, Inc.
800/627-0326 ext. 410

Copyright © Environmental Toxicology and Chemistry

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

News and information

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

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

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Food/Agriculture/Supplements

Smallest world record has 'endless possibilities' for bio-nanotechnology October 8th, 2014

Simple Detection of Toxic Compounds in Dairy Products October 6th, 2014

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Nanoscience makes your wine better September 17th, 2014

Environment

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Physicists build reversible laser tractor beam October 20th, 2014

Plastic nanoparticles also harm freshwater organisms October 18th, 2014

Energy

Nanoparticle technology triples the production of biogas October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Could I squeeze by you? Ames Laboratory scientists model molecular movement within narrow channels of mesoporous nanoparticles October 21st, 2014

Water

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

New Nanocomposites Help Elimination of Toxic Dyes October 15th, 2014

Fast, cheap nanomanufacturing: Arrays of tiny conical tips that eject ionized materials could fabricate nanoscale devices cheaply October 4th, 2014

Production of Filters for Separation of Water from Petroleum Products in Iran October 1st, 2014

Safety-Nanoparticles/Risk management

Plastic nanoparticles also harm freshwater organisms October 18th, 2014

Human health, wealth require expanded marine science, experts say: In Rome, European experts publish a 'common vision' of priorities for marine research and action through 2020 October 9th, 2014

Coating Nanotubes with Aluminum Oxide Lowers Risk of Lung Injury October 6th, 2014

PEN Inc. Chairman Scott Rickert Announces Company Vision, Product Priorities and Management Team: Webcast Highlights the Launch of PEN October 3rd, 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 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE