Navigation Links
Nanoparticles in the home: More and smaller than previously detected
Date:11/13/2008

Extremely small nanoscale particles are released by common kitchen appliances in abundant amounts, greatly outnumbering the previously detected, larger-size nanoparticles emitted by these appliances, according to new findings* by researchers at the National Institute of Standards and Technology (NIST). So-called "ultrafine particles" (UFP) range in size from 2 to 10 nanometers. They are emitted by motor vehicles and a variety of indoor sources and have attracted attention because of increasing evidence that they can cause respiratory and cardiovascular illnesses.

NIST researchers conducted a series of 150 experiments using gas and electric stoves and electric toaster ovens to determine their impacts on indoor levels of nano-sized particles. Previous studies have been limited to measuring particles with diameters greater than 10 nm, but new technology used in these experiments allowed researchers to measure down to 2 nm particlesapproximately 10 times the size of a large atom.

This previously unexplored range of 2 to 10 nm contributed more than 90 percent of all the particles produced by the electric and gas stovetop burners/coils. The gas and electric ovens and the toaster oven produced most of their UFP in the 10 nm to 30 nm range.

The results of this test should affect future studies of human exposure to particulates and associated health effects, particularly since personal exposure to these indoor UFP sources can often exceed exposure to the outdoor UFP.

Researchers will continue to explore the production of UFP by indoor sources. Many common small appliances such as hair dryers, steam irons and electric power tools include heating elements or motors that may produce UFP. People often use these small appliances at close range for relatively long times, so exposure could be large even if the emissions are low.

The experiments were conducted in a three-bedroom test house at NIST that is equipped to measure ventilation rates, environmental conditions and contaminant concentrations.


'/>"/>

Contact: Evelyn Brown
evelyn.brown@nist.gov
301-975-5661
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related biology news :

1. Novel 3-D cell culture model shows selective tumor uptake of nanoparticles
2. MIT: Remote-control nanoparticles deliver drugs directly into tumors
3. Researchers mimic bacteria to produce magnetic nanoparticles
4. Environmental fate of nanoparticles depends on properties of water carrying them
5. Nanoparticles assemble by millions to encase oil drops
6. New ORNL process brings nanoparticles into focus
7. $2M grant awarded to University of Kentucky for research on nanoparticles and human health
8. MU scientists go green with gold, distribute environmentally friendly nanoparticles
9. Workshop on environmental nanoparticles at UD, Nov. 10-11
10. UD researchers show that plants can accumulate nanoparticles in tissues
11. Social parasites of the smaller kind
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nanoparticles in the home: More and smaller than previously detected
(Date:2/21/2017)... Ore. , Feb. 22, 2017  IBM (NYSE: ... (Avamere Health Services, Infinity Rehab, Signature Hospice, Home Health, ... will apply the power of IBM cognitive computing to ... centers. By analyzing data streaming from sensors in senior ... and environmental conditions, and obtain deeper learnings into the ...
(Date:2/13/2017)... , Feb. 13, 2017  RSA Conference -- ... platform that is designed to enhance fraud detection ... release in the RSA Fraud & Risk Intelligence ... organizations to leverage additional insights from internal and ... to better protect their customers from targeted cybercrime ...
(Date:2/8/2017)... 2017 About Voice Recognition Biometrics Voice recognition ... against a stored voiceprint template. Acoustic features of ... tone are compared to distinguish between individual voices. ... most PCs already have a microphone and can ... biometrics are most likely to be deployed in ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... 2017 Agenus Inc. (NASDAQ: AGEN), an immuno-oncology ... cancer vaccines, today announced participation at the following conferences: ... Blair and Maidstone Life Sciences conference "Cancer Immunotherapy Conference" ... New York, NY . Agenus will participate ... 9:40 am: Robert B. Stein , M.D., Ph.D., ...
(Date:3/23/2017)... ... March 23, 2017 , ... Lajollacooks4u is proud to announce it has become the ... corporate cooking challenges for companies around the world, such as Illumina, HP and Qualcomm, and ... reason for its increasing popularity is due to its new team building format, a way ...
(Date:3/23/2017)... , March 23, 2017  Northwest Biotherapeutics (OTCQB: ... personalized immune therapies for solid tumor cancers, today ... million financing it announced last Friday, March 17, ... several institutional investors securities totaling 28,843,692 shares, comprised ... and 10,000,000 shares of Class C Warrants pre-funded ...
(Date:3/23/2017)... 2017  GlobeImmune, Inc. today announced it has entered ... 12,835,490 shares of its common stock to NantCell, Inc., ... with the sale of its common stock, NantCell has ... to GlobeImmune 200,000 shares, an estimated $2.0 million in ... are pleased to enter into this strategic agreement with ...
Breaking Biology Technology: