Navigation Links
Waterborne carbon increases threat of environmental mercury
Date:12/10/2007

tial to geochemical variables," Moreau says. "We would like to take a bacterium that we know methylates mercury very efficiently and let it tell us what it can methylate and what it can't, under given conditions."

Moreau and colleagues at the U.S. Geological Survey, UW-Madison, the University of Colorado and Chapman University chose to look at the role of dissolved organic carbon (DOC), a richly colored brew created as plants and other organic materials decay into a soup of proteins, acids and other compounds. DOC can tint wetlands and streams shades of yellow to dark brown.

DOC has noticeable effects on bacterial mercury processing. "They seem to methylate mercury better with DOC present," says Moreau.

In the current studies, the scientists looked at the effects of DOC samples collected from two different organic-rich environments, a section of the Suwannee River and Florida's Everglades.

"We found that different DOCs have different positive effects on methylation - they both seem to promote mercury methylation, but to different degrees," Moreau explains.

Because DOC is virtually ubiquitous in aqueous environments, its effect on mercury processing may be an important factor in determining mercury bioavailability.

Moreau and his colleagues are now working to understand how DOC promotes methylation. One possibility is that DOC acts indirectly by increasing bacterial growth, while another is that DOC may directly interact with the mercury itself to boost its ability to enter bacteria.

Although mercury already in the environment is there to stay, Moreau says an understanding of what regulates mercury toxicity is critical for developing ecosystem-level management strategies.

"Strategies to deal with methylmercury production [should] lead to hopefully more efficient ways to reduce human consumption of methylmercury and lead to less potential human health problems," he says.


'/>"/>

Contact: John Moreau
moreau@geology.wisc.edu
University of Wisconsin-Madison
Source:Eurekalert

Page: 1 2

Related biology news :

1. New study warns limited carbon market puts 20 percent of tropical forest at risk
2. Mice use specialized neurons to detect carbon dioxide in the air
3. Researchers find new taste in fruit flies: carbonated water
4. Studying component parts of living cells with carbon nanotube cellular probes
5. New membrane strips carbon dioxide from natural gas faster and better
6. Green alga genome project catalogs carbon capture machinery
7. Hungry microbes share out the carbon in the roots of plants
8. Decline in uptake of carbon emissions confirmed
9. Study reveals that nitrogen fertilizers deplete soil organic carbon
10. US fires release large amounts of carbon dioxide
11. Wildfire drives carbon levels in northern forests
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2015)... 23, 2015 SoundView Technology Group issues a new ... NXTD ) Wocket smart wallet. SoundView was one of the selected ... experience with the Wocket in multiple scenarios and outlets. ... and other retailers, making both debit and credit card payments.  ... says, "If the company meets their plans in 2015, it ...
(Date:3/20/2015)... 20, 2015 Research and Markets ... the "India Sensors Market Forecast and Opportunities ... The sensor market is projected to grow at ... Consumer electronics, automotive, industrial and healthcare sectors are ... country. In addition, adoption of MEMS technology in ...
(Date:3/19/2015)... , March 19, 2015  NXT-ID, Inc. (NASDAQ: ... focused on the growing mobile commerce market, announces its biometric ... news clip that aired this week on Washington ... In a segment "The Next Great Thing", host ... new way to pay, and ,a really big breakthrough in ...
Breaking Biology News(10 mins):Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 2India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 3NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3
... and partnering organizations have discovered a remarkably primitive eel in ... Palau. This fish exhibits many primitive anatomical features unknown in ... living eels, resulting in its classification as a new species ... is published online in the Proceedings of the Royal ...
... mice exposed to prenatal stress are more sensitive to stress ... issue of The Journal of Neuroscience . These findings ... in stress response that may be passed across generations. ... previously found that male mice were sensitive to stress their ...
... Switzerland have investigated the remarkable distance that microorganisms may ... their potential to colonise new lands and also potentially ... Moores University (LJMU), Swiss Federal Institute for Forest, Snow ... de Lausanne (EPFL) the University of Neuchtel published their ...
Cached Biology News:Scientists discover the most primitive living eel 2Effects of prenatal stress passed across generations in mice 2Life on the wind: Study reveals how microbes travel the Earth 2
(Date:3/25/2015)... MN (PRWEB) March 26, 2015 Agnition ... upcoming episode of American Farmer, airing for the first ... The segment of American Farmer will explore the extremely ... provides crop producers with a patented Microbial Catalystâ„¢ technology ... and greater yields. The segment will air again on ...
(Date:3/25/2015)... The surging prevalence of internet ... social media growth, with over 50% of the ... networking. Insurance companies are making use of social ... promote a diversity of their services and products. ... social networking services as part of sales and ...
(Date:3/25/2015)... , March 25, 2015 Accelovance, a therapeutically ... finalist for "Best Contract Research Organization" at the upcoming ... Vaccine Congress. This is the eighth ... for the award, winning for "Best Contract Research Organization" ... Recommended" distinction in 2013. "We,re excited to ...
(Date:3/25/2015)... Fla. , March 25, 2015  Point-of-Care ... and management consulting firm, has launched the ePrescribing ... to simplify tracking of ePrescribing regulatory requirements in ... "The ePrescribing regulatory landscape continues to change rapidly, ... deliver what the industry, and ultimately patients, need," ...
Breaking Biology Technology:Agnition to be Featured In Upcoming Episode of American Farmer on RFD-TV 2Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 2Social Media Role in Global Insurance Industry Examined by Timetric in New Market Research Report Published at MarketPublishers.com 3Accelovance Nominated for 2015 Vaccine Industry Excellence (ViE) Awards 2Point-of-Care Partners Launches the ePrescribing State Law Capsule 2
... March 23 Nereus Pharmaceuticals, Inc., a pioneer ... announced that it is conducting a randomized Phase ... (VDA) NPI-2358 in combination with standard chemotherapy (docetaxel) ... This study follows on positive outcomes in ...
... Corporation (Nasdaq: PRXL ), a leading ... Company has received the Best Performing Clinical Research ... for life sciences businesses encouraged by the Economic ... to PAREXEL at the BioSingapore Asia/Pacific Biotechnology Awards ...
... York, December 1, 2008 Although naturally occurring smallpox ... might obtain smallpox from a laboratory and release it ... smallpox vaccine may be insufficient for universal administration. In ... The American Journal of Medicine , researchers found ...
Cached Biology Technology:Nereus Pharmaceuticals Initiates ADVANCE, a Randomized Phase 2 Clinical Trial of NPI-2358 in Non-Small Cell Lung Cancer 2Nereus Pharmaceuticals Initiates ADVANCE, a Randomized Phase 2 Clinical Trial of NPI-2358 in Non-Small Cell Lung Cancer 3PAREXEL Receives BioSingapore Award for Best Performing CRO 2PAREXEL Receives BioSingapore Award for Best Performing CRO 3PAREXEL Receives BioSingapore Award for Best Performing CRO 4New study indicates smallpox vaccination effective for decades 2
... Disposable, clear, APET plastic tray. Ideal for ... those trays used for multipurposes. Pour spouts ... A marker or label may be used ... trays on rockers or shakers for staining ...
... The Staccato Series of systems provide ... today's drug discovery, genomics, proteomics and ... available in three base configurations; Mini ... Systems Series. All Staccato Application ...
... microfiltration devices for the fast and reliable clarification/filtration ... to 500 l. They can be used in ... Product Features: High-flux Polyethersulphonemembrane ... up volume ( Fast and reproducible performance ...
... Staccato Series of systems provide fast and reliable scalable ... drug development laboratories. Staccato systems are available in three ... Systems Series. ... All Staccato ...
Biology Products: