Navigation Links
Mercury in water, fish detected with nanotechnology
Date:9/12/2012

EVANSTON, Ill. --- When mercury is dumped into rivers and lakes, the toxic heavy metal can end up in the fish we eat and the water we drink. To help protect consumers from the diseases and conditions associated with mercury, researchers at Northwestern University in collaboration with colleagues at Ecole Polytechnique Fdrale de Lausanne (EPFL) in Switzerland, have developed a nanoparticle system that is sensitive enough to detect even the smallest levels of heavy metals in our water and fish.

The research was published September 9 in the journal Nature Materials.

"The system currently being used to test for mercury and its very toxic derivative, methyl mercury, is a time-intensive process that costs millions of dollars and can only detect quantities at already toxic levels," said Bartosz Grzybowski, lead author of the study. "Ours can detect very small amounts, over million times smaller than the state-of-the-art current methods. This is important because if you drink polluted water with low levels of mercury every day, it could add up and possibly lead to diseases later on. With this system consumers would one day have the ability to test their home tap water for toxic metals."

Grzybowski is the Kenneth Burgess Professor of Physical Chemistry and Chemical Systems Engineering in the Weinberg College of Arts and Sciences and the McCormick School of Engineering and Applied Science.

The new system is comprised of a commercial strip of glass covered with a film of "hairy" nanoparticles, a kind of a "nano-velcro," that can be dipped into water. When a metal cation --- a positively charged entity, such as a methyl mercury --- gets in between two hairs, the hairs close up, trapping the pollutant and rendering the film electrically conductive.

A voltage-measuring device reveals the result; the more ions there are trapped in the "nano-velcro," the more electricity it will conduct. To calculate the number of trapped p
'/>"/>

Contact: Erin White
ewhite@northwestern.edu
847-491-4888
Northwestern University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Measuring mercury levels: Nano-velcro detects water-borne toxic metals
2. Mercury mineral evolution
3. Mercury rising: Greater L.A. to heat up an average 4 to 5 degrees by mid-century
4. NIST launches new website to educate industry about alternatives to mercury thermometers
5. Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
6. Use less water, producing energy and fertilizer at the same time
7. Water, water everywhere - but is it essential to life?
8. 2 distinguishable gene groups detected: 1 normal and 1 problematic
9. Realizing the promise of RNA nanotechnology for new drug development
10. New study shows promise in using RNA nanotechnology to treat cancers and viral infections
11. Understanding the biological and ecological implications of safe nanotechnology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mercury in water, fish detected with nanotechnology
(Date:7/9/2014)... developed by researchers at the NIH,s National ... its collaborators to treat sickle cell disease ... business. The drug candidate, Aes-103, is the ... molecular mechanism of sickle cell disease. Baxter ... required for regulatory approval and commercialization. , ...
(Date:7/9/2014)... receptor antagonists can alleviate the symptoms of ... cognitive dysfunction and effectively scavenge amyloid beta ... (Aβ) vaccines reduced and eliminated Aβ deposition ... model, and significantly improved behavioral and cognitive ... First Affiliated Hospital of China Medical University, ...
(Date:7/9/2014)... inhabitants of the sea: tiny haptophytes of the type ... eye, when they are in bloom in spring, they ... on satellite images. "Together with other phytoplankton, Emiliania ... global photosynthesis output," states Prof. Dr. Georg Pohnert of ... the greenhouse gas carbon dioxide CO2 is ...
Breaking Biology News(10 mins):First drug candidate from NIH program acquired by biopharmaceutical company 2First drug candidate from NIH program acquired by biopharmaceutical company 3First drug candidate from NIH program acquired by biopharmaceutical company 4Short circuit in the food web 2
... tropical parasitic disease that can lead to life-threatening heart ... than previously thought, according to research from The University ... for four years now, and this year the number ... professor of integrative biology and philosophy at The University ...
... Cincinnati, OH, October 6, 2011 -- Directly advertising food ... providers, and the American Academy of Pediatrics and the ... impact of advertising on children,s healthy food choices. ... Journal of Pediatrics explores the relationship between ...
... can ever know about long-gone creatures is what they ... resurrect actual specimens and compare their features with their ... Toronto biologists helping to create a seed bank that ... allowing them to measure evolution caused by global change. ...
Cached Biology News:Chagas disease may be a threat in South Texas, says researcher 2Study suggests children's food choices are affected by direct advertising and parental influence 2Seed time-capsule will aid study of plant evolution amid environmental change 2
(Date:1/15/2014)... 15, 2014 TaiGen Biotechnology Company, Limited ("TaiGen") today ... R-Pharm, a leading Russian pharmaceutical company, to develop and ... Russian Federation , Turkey ... is a novel antibiotic for the treatment of bacterial ...
(Date:1/14/2014)... January 14, 2014 Carahsoft and CDS ... January 23, 2014 at 2pm EST (11am PST), “Natural ... topic focuses on how technology can turn raw, heterogeneous ... for government agencies. The online webinar will last approximately ...
(Date:1/14/2014)... Communications, a leading provider of strategic communications services to corporations and ... the United States and Europe ... JD, is returning to the firm,s Washington, D.C. ... more than two years of service as Associate Commissioner for the ...
(Date:1/14/2014)... York, NY (PRWEB) January 14, 2014 ... of Alliqua, Inc. (OTCQB: ALQA). Alliqua is an emerging ... to serve the wound care market. , Free report ... was restructured with a seasoned management team and Board, ...
Breaking Biology Technology:TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2Former FDA Associate Commissioner Returns To 3D Communications 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3
... Calif., July 22 CV Therapeutics,Inc. (Nasdaq: CVTX ... results for 2008 after the market closes on Thursday, ... at 5:00 p.m. EDT,2:00 p.m. PDT, on the company,s ... on to the Company,s website at, http://www.cvt.com and ...
... is bringing aboard Ashton S. Maaraba, a key Pharmacy, Pharmacy Services ... , ... (PRWEB) July 22, 2008 -- PharmaSmart International ... Ashton S. Maaraba, a key Pharmacy, Pharmacy Services & HBC industry ...
... U.S. Department of Energy,s Lawrence Berkeley National Laboratory (Berkeley ... performed the first scanning tunneling spectroscopy of graphene flakes ... latest in a series of surprising insights into the ... carbon: an unexpected gap-like feature in the energy spectrum ...
Cached Biology Technology:CV Therapeutics to Announce 2008 Second Quarter Financial Results on Thursday, July 31, 2008 2Pharmasmart International Taps Top Executive Ashton Maaraba to Head Global Sales and Marketing 2A phonon floodgate in monolayer carbon 2A phonon floodgate in monolayer carbon 3A phonon floodgate in monolayer carbon 4A phonon floodgate in monolayer carbon 5