Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > New Methods & Tools Needed to Measure Exposure to Airborne Nanomaterials

Abstract:
New methods and tools for measuring exposure to airborne engineered nanomaterials will be required to protect the health of workers in nanotechnology-related jobs— estimated to total 10 million people by 2014—according to two occupational health experts writing in the inaugural issue of the journal Nanotoxicology.

New Methods & Tools Needed to Measure Exposure to Airborne Nanomaterials

Washington, DC | Posted on April 17th, 2007

The article, "Assessing Exposure to Airborne Nanomaterials: Current Abilities and Future Requirements," written by Andrew Maynard, chief science advisor at the Wilson Center's Project on Emerging Nanotechnologies, and Robert Aitken, director of strategic consulting at the Institute of Occupational Medicine (Edinburgh, UK), can be viewed online at http://www.nanotoxicology.net .

"Airborne engineered nanomaterials present complex exposure measurement challenges," Maynard said. "Conventional approaches—measuring the mass of airborne material—will not always be sufficient. This presents a challenge because studies have indicated that, on a mass-for-mass basis, certain nanometer-scale particles may be more toxic than larger particles with a similar composition. In other words, smaller particles may be more harmful than conventional thinking would lead us to believe."

Maynard and Aitken reduced the incredibly diverse set of possible engineered nanoparticles into nine distinct categories, ranging from very simple spherical particles to complex multifunctional particles. By pairing these categories with particle properties associated with potential health effects, they teased out possible monitoring approaches for each particle-property combination.

"What our analysis shows is that in the complex new ‘nano world' there is no single or simple method for monitoring nanoaerosol exposures in order to assess and manage potential health effects," Aitken explained. "There are instruments that present partial solutions to the measurement challenges we face. But at the end of the day, we lack the tools and devices that are sophisticated, cost-effective and fast enough to do the job."

Maynard and Aitken conclude that current approaches of measuring the number of particles in a volume of air, surface areas, and mass concentration, will all be useful to some degree. However, further research is needed to identify which is most important for specific nanomaterials and which measurement methods are most effective.

The authors advocate developing a new "universal aerosol monitor" capable of providing detailed information on the nature of airborne engineered nanomaterials to which people are exposed. Maynard, Aitken and 12 other experts included development of such a versatile measurement tool among five grand challenges that they viewed as essential to achieving the safe handling of nanotechnology in an article that appeared in the November 16, 2006 issue of the journal Nature.

The proposed wearable sampling device would measure aerosol number, surface area, and concentration mass simultaneously and would be low cost. Today, stand-alone instruments can perform the individual types of measurements called for by Maynard and Aitken. "Bringing these technologies together into a single package within the size and cost parameters discussed does present a significant challenge," they write.

"An economical integrated device will empower small and large nanotechnology industries alike to reduce uncertainty over what their workers are exposed to, and enable them to develop safer working environments" said Maynard. "This will require targeted research into developing new methodologies and new instruments. But the rapid advancement and commercialization of nanotechnologies are leading to the need for effective—if not necessarily perfect—exposure measurement approaches and devices to be developed as soon as possible."

In 2005, nanotechnology was incorporated into $30 billion in manufactured goods—a number predicted to grow to $2.6 trillion in annual manufactured goods by 2014. Already, there are almost 400 manufacturer-identified nanotechnology-based consumer products on the market—ranging from computer chips to automobile parts and from clothing to cosmetics and dietary supplements (see: http://www.nanotechproject.org/consumerproducts ).

Nanotechnology is the ability to measure, see, manipulate and manufacture things usually between 1 and 100 nanometers. A nanometer is one billionth of a meter; a human hair is roughly 100,000 nanometers wide.

####

About The Project on Emerging Nanotechnologies
The Project on Emerging Nanotechnologies is an initiative launched by the Woodrow Wilson International Center for Scholars and The Pew Charitable Trusts in 2005. It is dedicated to helping business, government and the public anticipate and manage possible health and environmental implications of nanotechnology. For more information about the project, log on to http://www.nanotechproject.org .

For more information, please click here

Contacts:
Sharon McCarter
Phone: (202) 691-4016

Copyright © Woodrow Wilson International Center for Scholars

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

Announcements

Nano 'sandwich' offers unique properties: Rice University researchers simulate two-dimensional hybrids for optoelectronics February 27th, 2017

Dream Chip Technologies Presents First 22nm FD-SOI Silicon of New Automotive Driver Assistance SoC: Advanced driver assistance system (ADAS) computer vision SoC developed for European THINGS2DO project with working first silicon fabricated on GLOBALFOUNDRIES’ 22nm FD-SOI Platfor February 27th, 2017

Sandia use confined nanoparticles to improve hydrogen storage materials performance: Big changes from a small package for hydrogen storage February 25th, 2017

New nano approach could cut dose of leading HIV treatment in half February 24th, 2017

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Sandia use confined nanoparticles to improve hydrogen storage materials performance: Big changes from a small package for hydrogen storage February 25th, 2017

New nano approach could cut dose of leading HIV treatment in half February 24th, 2017

Atom-scale oxidation mechanism of nanoparticles helps develop anti-corrosion materials February 24th, 2017

Molecular phenomenon discovered by advanced NMR facility: Cutting edge technology has shown a molecule self-assembling into different forms when passing between solution state to solid state, and back again - a curious phenomenon in science - says research by the University of Wa February 22nd, 2017

Safety-Nanoparticles/Risk management

NIST updates 'sweet' 1950s separation method to clean nanoparticles from organisms January 27th, 2017

Nanoparticle exposure can awaken dormant viruses in the lungs January 17th, 2017

Investigating the impact of natural and manmade nanomaterials on living things: Center for Environmental Implications of Nanotechnology develops tools to assess current and future risk January 9th, 2017

First time physicists observed and quantified tiny nanoparticle crossing lipid membrane November 7th, 2016

Human Interest/Art

Weizmann Institute of Science Presents: Weizmann Wonder Wander - 4G - is Online June 21st, 2016

Call for NanoArt and Art-Science-Technology Papers June 9th, 2016

Scientists propose non-animal tools for assessing the toxicity of nanomaterials: Particle and Fibre Toxicology publishes recommendations from expert group meeting April 26th, 2016

Are humans the new supercomputer?Today, people of all backgrounds can contribute to solving serious scientific problems by playing computer games. A Danish research group has extended the limits of quantum physics calculations and simultaneously blurred the boundaries between mac April 14th, 2016

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