Navigation Links
Nano-velcro clasps heavy metal molecules in its grips
Date:9/9/2012

Mercury, when dumped in lakes and rivers, accumulates in fish, and often ends up on our plates. A Swiss-American team of researchers led by Francesco Stellacci at the Ecole Polytechnique Fdrale de Lausanne (EPFL) and Bartosz Grzybowski at Northwestern University has devised a simple, inexpensive system based on nanoparticles, a kind of nano-velcro, to detect and trap this toxic pollutant as well as others. The particles are covered with tiny hairs that can grab onto toxic heavy metals such as mercury and cadmium. This technology makes it possible to easily and inexpensively test for these substances in water and, more importantly, in the fish that we eat. Their new method can measure methyl mercury, the most common form of mercury pollution, at unprecedentedly small attomolar concentrations. The system is outlined in an article appearing September 9, 2012 in the journal Nature Materials.

Methyl mercury, toxic and difficult to monitor

Researchers are particularly interested in detecting mercury. Its most common form, methyl mercury, accumulates as one goes up the food chain, reaching its highest levels in large predatory fish such as tuna and swordfish. In the US, France and Canada, public health authorities advise pregnant women to limit fish consumption because mercury can compromise nervous system development in the developing fetus.

"The problem is that current monitoring techniques are too expensive and complex," explains Constellium Chair holder at EPFL and co-author Francesco Stellacci. "We periodically test levels of mercury in drinking water, and if those results are good, we make the assumption that levels are acceptable in between those testing periods." But industrial discharge fluctuates.

A simple, inexpensive new technology

The technology developed by the Swiss-American team is simple to use. A strip of glass covered with a film of "hairy" nanoparticles is dipped into the water. When an ion
'/>"/>

Contact: Francesco Stellacci
francesco.stellacci@epfl.ch
41-798-125-213
Ecole Polytechnique Fdrale de Lausanne
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Kinesiology team gets $975,000 Defense grant to study effects of heavy loads on soldiers
2. Handful of heavyweight trees per acre are forest champs
3. Earthworms soak up heavy metal
4. A new avenue to better medicines: Metal-peptide complexes
5. Iowa State, Ames Lab researchers invent new tool to study single biological molecules
6. New model gives hands-on help for learning the secrets of molecules
7. Weighing molecules 1 at a time
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/17/2014)... in German . ... day in order to reproduce? And why are there two ... the latest issue of the research journal Molecular Human ... Steven Ramm from Bielefeld University Bielefeld has compiled this special ... for a female to copulate with several males in quick ...
(Date:10/16/2014)... land managers have a new synthesis of recent research ... (MMC) forests in the two states. , The ... Oregon and Washington: A Synthesis of the Relevant Biophysical ... technical report published by the U.S. Forest Service,s Pacific ... request from managers for a synthesis of the large ...
(Date:10/16/2014)... October 16, 2014 NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile ... technologies including Wocket™, the Smart Wallet, at the 13 ... is a leading global conference on the intersection of ... Mark Anderson , founder and publisher of the ...
Breaking Biology News(10 mins):Sperm wars 2New report synthesizes best available science on management of moist mixed-conifer forests 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
... ST. LOUIS A group of 50 researchers from around ... Louis University and Leslie Buck, Ph.D., from the University of ... the genome of the western painted turtle and the results ... be important for human health. The western painted turtle, ...
... Park Ridge, Ill. (April 23, 2013) This ... the world are gathering to share research on a ... growing global burden of chronic disease, there is particular ... in overall health. Several studies presented at the conference ...
... reefs are stressed the world over and could be in ... corals die and others not, even when exposed to the ... University and The Field Museum of Natural History has a ... susceptibility to deadly coral bleaching due to the light-scattering properties ...
Cached Biology News:Saint Louis University, University of Toronto biologists help decode turtle genome 2New research points to benefits of eggs, even for those at cardiovascular risk 2Insights into deadly coral bleaching could help preserve reefs 2Insights into deadly coral bleaching could help preserve reefs 3
(Date:10/19/2014)... Asian Automatic patient billing report defines and segments the ... The Automatic patient billing market in Asia is estimated ... a developing CAGR of 7.2% from 2013 to 2018. ... patient billing market, to get an idea of the ... the segmentation of this market in the same region, ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 According ... Products (Access Points; WLAN Controllers; Wireless gateways)]- Global ... and segments the global Outdoor Wi-Fi market with ... this report MarketsandMarkets also identifies the drivers and ... on the trends, opportunities and challenges. , Browse ...
(Date:10/18/2014)... The Asia-Pacific hardware encryption display market ... with analysis and forecast of revenue. This market was ... reach $51,362.6 million by 2018, at a CAGR of ... TOC of the Asia-Pacific hardware encryption market report, to ... also provides a glimpse of the segmentation of the ...
(Date:10/18/2014)... The report " Cloud Analytics Market ... Speech; Machine; Video; Predictive Analytics: Global Advancements, Delivery ... Analysis (2013 - 2018) ", defines and segments ... segments with an in-depth analysis and forecasting of ... driving this market, various restraints, and opportunities impacting ...
Breaking Biology Technology:The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 4The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 3Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 2Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 3Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 4Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 5
... desktops, laptops, MP3 players and smartphones are a likely ... digital audio (or video) programs are delivered via ... a range of devices for on-demand listening. , ... consumers for a variety of reasons providing an ...
... Madison, Wis. - The U.S. District Court for ... injunction against Abbott Laboratories , preventing the pharmaceutical company ... infringe on a genotyping patent held by Innogenetics , ... comes after the court upheld a $7 million damage verdict ...
... - When it comes to innovation, American Family Insurance's ... , Chapman The direction comes from within, and ... it up with a familiar phrase: nothing ventured, nothing gained. ... established a venture program modeled after employee-driven, quality-control programs. ...
Cached Biology Technology:Podcasts time, place, and player shifted media 2Podcasts time, place, and player shifted media 3Podcasts time, place, and player shifted media 4CIO Leadership Series: Byrne Chapman, American Family Insurance 2CIO Leadership Series: Byrne Chapman, American Family Insurance 3CIO Leadership Series: Byrne Chapman, American Family Insurance 4
A camera based compact unit for high speed scanning of 2D barcoded tubes in a cluster rack. This reader has been designed to read both 96 and 48 tube rack configurations and be compatible with common...
A compact, high-speed single tube reader unit designed for benchtop 2D barcode reading. The unit can be used with all of ABgene's 2D barcoded tubes, including the 2ml CryoCode tube....
... Enzymatic method stops PCR carry-over ... ,Designed to degrade PCR products from ... nucleic acid templates, which improves amplification ... core reagents and GeneAmp instrument systems ...
... enzyme that catalyzes the hydrolysis of,starch ... and dextrins. The,level of a-amylase in ... is of,clinical significance in the diagnosis ... plant and microbial a-amylases are,important enzymes ...
Biology Products: