Navigation Links
Pitt researchers use fluorescence to develop method for detecting mercury in fish
Date:11/18/2008

PITTSBURGHResearchers at the University of Pittsburgh have developed a simple and quick method for detecting mercury in fish and dental samples, two substances at the center of public concern about mercury contamination. The technique involves a fluorescent substance that glows bright green when it comes into contact with oxidized mercury, the researchers report in the current online edition of the Journal of the American Chemical Society. The intensity of the glow indicates the amount of mercury present.

Developed in the laboratory of Kazunori Koide (Ko-ee-deh), a chemistry professor in Pitt's School of Arts and Sciences, the new method can be used onsite and can detect mercury in 30 to 60 minutes for dental fillings (or amalgams) or 10 to 30 minutes for fish, Koide explained. "Our method could be used in the fish market or the dentist office," he said. "We have developed a reliable indicator for mercury that a person could easily and safely use at home."

The fluorescence results from the reaction of mercury ions with hydrocarbons called alkynesthe alkyne is converted into a ketone and creates a fluorescent molecule. Koide's method differs from similar mercury indicators in that it withstands the oxidation process mercury samples must undergo prior to testing, Koide said. The mercury species found in most fish and dental amalgamssuch as the toxic methyl mercurymust be converted into a safer variety of mercury with an oxidizing agent. Other fluorescent detectors are often not compatible with samples that have been oxidized.

In testing fish, Koide and his team oxidized a piece of salmon (about the size of a fingertip) in water mixed with a chlorine solution similar to household bleach. The conversion process is safe and relatively simple, Koide said. Afterward, the team added the alkyne solution and the mixture glowed bright green.

The Pitt researchers also tested for mercury leaching from dental amalgam, a common toot
'/>"/>

Contact: Morgan Kelly
mekelly@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers identify proteins involved in new neurodegenerative syndrome
2. Texas researchers and educators head for Antarctica
3. MGH researchers describe new way to identify, evolve novel enzymes
4. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Researchers discover new strategies for antibiotic resistance
8. Researchers find new taste in fruit flies: carbonated water
9. Binghamton University researchers investigate evolving malaria resistance
10. UIC researchers find promising new targets for antibiotics
11. Researchers develop simple method to create natural drug products
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/16/2014)... Health at the Mailman School of Public Health are ... and prenatal exposure to two phthalates used in a ... the journal Environmental Health Perspectives . , ... levels of the chemicals, butylbenzyl phthalate (BBzP) and di-n-butyl ... increase in risk of developing asthma between age 5 ...
(Date:9/16/2014)... maternal morbidity amongst women in Australia is increased ... published today (17 September) in BJOG: An ... Australians generally enjoy high standards of living; however, ... in particular between indigenous and non indigenous Australians. ... independent impact of socioeconomic position on severe maternal ...
(Date:9/16/2014)... American Menopause Society (NAMS) has published its key, ... womenon everything from hot flashes to heart disease. ... Recommendations for Clinical Care of Midlife Women," was ... Menopause . This is the first, comprehensive set ... women freely available to all clinicians who care ...
Breaking Biology News(10 mins):Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3New study examines the impact of socioeconomic position & maternal morbidity in Australia 2New study examines the impact of socioeconomic position & maternal morbidity in Australia 3
... Cambridge, Mass. - August 10, 2011 - Between conception ... meters long, looping and coiling within the tiny abdomen. ... loops into the same formationhowever, until now, it has ... experimental observations, biological and biophysical manipulations, theory, and computation, ...
... help overcome a major barrier to the use of gene ... reported development and successful initial laboratory tests of such a ... David Kaplan and colleagues note that gene therapy ... requires safe and efficient carriers or "vectors." Those carriers ...
... , Working out the structure of a complex formed ... be key in understanding how an antibiotic-producing organism controls ... example of how other antibiotic producers regulate export to ... certain microorganisms is a complex and highly regulated process, ...
Cached Biology News:Gut coils with help from its elastic neighbor 2Gut coils with help from its elastic neighbor 3Student brings home new expertise to answer question in antibiotic resistance 2Student brings home new expertise to answer question in antibiotic resistance 3
(Date:9/16/2014)... USA (PRWEB) September 16, 2014 “Nature ... create the features that we desire in optical design,” ... at Montana State University. “As we explore surfaces and ... of those lessons were presented in San Diego in ... Light: Light in Nature ” chaired by Shaw and ...
(Date:9/16/2014)... --The emerging field of molecular electronics could take ... enabling the construction of tiny circuits from molecular ... would take on the roles currently played by ... of researchers from five Japanese and Taiwanese universities ... small-scale electronics: a molecule called picene. In a ...
(Date:9/16/2014)... Cardioxyl Pharmaceuticals, Inc. announced today ... to be effective in animal models following oral (capsule) ... infusions that could pave the way for convenient outpatient ... at the Heart Failure Society of America,s (HFSA) 18 ... Vegas . The research, conducted in ...
(Date:9/16/2014)... Md. , Sept. 16, 2014   ... biotechnology company developing novel anti-infective biologic and drug ... and diseases, announced today the completion of the Company,s ... which highlighted its irritable bowel syndrome (IBS) ... constipation-predominant IBS (C-IBS). In the keynote ...
Breaking Biology Technology:Nature’s designs inspire research into new light-based technologies 2Nature’s designs inspire research into new light-based technologies 3Nature’s designs inspire research into new light-based technologies 4Nature’s designs inspire research into new light-based technologies 5The future face of molecular electronics 2Cardioxyl Presents Oral Heart Failure Treatment Data For Its Experimental HNO Prodrug At HFSA 18th Annual Scientific Meeting 2Synthetic Biologics' Statin-Class Candidate for Constipation-Predominant Irritable Bowel Syndrome Detailed at Company's Investor Day 2Synthetic Biologics' Statin-Class Candidate for Constipation-Predominant Irritable Bowel Syndrome Detailed at Company's Investor Day 3
... European Commission,s Joint Research Centre (JRC) has just ... a representative range of 25 different types of ... ensure consumer protection and confidence in many innovative ... most promising technological developments. By enabling a harmonised ...
... Feb. 14, 2011 New England Biolabs has expanded its ... One Taq Hot Start DNA Polymerases. Optimized blends of ... these new products offer robust amplification across a wide range ... exonuclease activity of Deep Vent increases the fidelity and robustness ...
... N.C., Feb. 14, 2011 India,s premier CRO, ... Society of India & Congress of Neurological Surgeons ...  The event was a convergence of leading neuroscientists, ... across the globe to discuss advances made in ...
Cached Biology Technology:Small material, big impact 2New England Biolabs Introduces OneTaq™ DNA Polymerase, a Robust Solution for Routine and Difficult PCR 2Max Neeman International Initiates Advisory Committee to Advance and Improve the Conduct of Complex Neurological Trials in India 2
... Psychology, The University of New South Wales, Sydney, ... Perth, Australia This is the Fourth Edition of ... It is a large format version (330 ... compact 3rd edition. This product number includes ...
... Jouan RC10 series of vacuum concentrators/centrifugal evaporators ... features allied to rapid and safe concentration ... be combined with oil-free or high vacuum ... a wide selection of rotors (eliminating sample ...
... is Thermo Electron's most advanced personal gradient ... to use sophisticated onboard software and a ... to offer performance, accuracy and simplicity in ... of customer driven features built up on ...
Carrier Serum...
Biology Products: