Navigation Links
New low-cost, nondestructive technology cuts risk from mercury hot spots
Date:10/25/2013

Hot spots of mercury pollution in aquatic sediments and soils can contaminate local food webs and threaten ecosystems, but cleaning them up can be expensive and destructive. Researchers from the Smithsonian Environmental Research Center and University of Maryland, Baltimore County have found a new low-cost, nonhazardous way to reduce the risk of exposure: using charcoal to trap it in the soil.

Mercury-contaminated "Superfund sites" contain some of the highest levels of mercury pollution in the U.S., a legacy of the many industrial uses of liquid mercury. But despite the threat, there are few available technologies to decrease the risk, short of digging up the sediments and burying them in landfillsan expensive process that can cause significant ecological damage.

In a new study published in the journal Environmental Science & Technology, Cynthia Gilmour (SERC), Upal Ghosh (UMBC) and their colleagues show that adding activated carbon, a form of charcoal processed to increase its ability to bind chemicals, can significantly reduce mercury exposure in these highly contaminated sites. With funding and support from several industry and federal partners, the team tested the technology in the laboratory with mercury-contaminated sediments from four locations: a river, a freshwater lake and two brackish creeks. To reduce the harm from mercury, the sorbents also had to decrease the amount of methylmercury taken up by worms.

"Methylmercury is more toxic and more easily passed up food webs than inorganic mercury," said Gilmour, the lead author on the study. "Unfortunately, methylmercury is produced from mercury contamination by natural bacteria. To make contaminated sites safe again, we need to reduce the amount of methylmercury that gets into animals."

Added at only 5 percent of the mass of surface sediments, activated carbon reduced methylmercury uptake by sediment-dwelling worms by up to 90 percent. "This technology provides
'/>"/>

Contact: Kristen Minogue
minoguek@si.edu
443-482-2325
Smithsonian
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Bio-Rads Droplet Digital PCR technology highlighted at ASHG Annual Meeting
2. Laser technology sorting method can improve Capsicum pepper seed quality
3. NTU scientists make breakthrough solar technology
4. Beaumont named to 2013 InformationWeek 500 list of top technology innovators
5. Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma
6. New NIH awards focus on nanopore technology for DNA sequencing
7. Biometrics & Technology Sector Leaders Briefing: NXT-ID, Intel, Sony, Facebook, Dell
8. Journal of Spinal Cord Medicine publishes special issue on assistive technology
9. Techne Corporation Appoints Dr. J. Fernando Bazan As Chief Technology Officer
10. Neurotechnology Announces NCheck Bio Attendance 2.0 Biometric Time and Attendance Software
11. Iris Biometrics Leader, EyeLock, Redefines Identity Authentication, Announces Availability of Software Development Kit to Accelerate Deployment of Technology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New low-cost, nondestructive technology cuts risk from mercury hot spots
(Date:7/9/2015)...  Synaptics Inc. (NASDAQ: SYNA ), a leading developer ... report financial results for the fourth quarter and fiscal ... close of market. The company will host a corresponding ... PT (5:00 p.m. ET), during which management may discuss ... live call, analysts and investors should dial 888-455-2260 (conference ...
(Date:7/8/2015)... NEW YORK , July 8, 2015  BD ... announced BD & Guidepoint Mentor, a new ... to Guidepoint,s expert network services. BD ... technologies to improve healthcare delivery and outcomes and, with ... start-up entrepreneur will be able to directly engage with ...
(Date:7/7/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company") ... announces a revised version of one of its first 30 second ... CNBC in New York , Chicago ... San Francisco metro areas.    , , ... replace all the cards in your wallet and keep your identity ...
Breaking Biology News(10 mins):Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 2BD and Guidepoint Team to Connect Healthcare Start-up Companies With Business and Scientific Experts 3Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 2Wocket Smart Wallet Commercials Airing on CNBC to Showcase This Summer's Must- Have Tech Product 3
... Soil Use and Management attempts for the first time ... globe and concludes that 24% of the land area is degrading ... decline in the quality of soil, water and vegetation is ... global data by which to assess its extent and severity. For ...
... 20, 2009 Ecopsychologyan emerging field that explores the ... in which ecology and psychology interact on individual, societal, ... peer-reviewed journal, Ecopsychology to be launched by ... ). Ecopsychology will explore the relationship ...
... good gumshoe. The University of Alberta medical geneticist has cracked ... Glaucoma is a leading cause of blindness in which cells ... what patients see. Scientists have long suspected a link between ... what the gene does and why some people with variations ...
Cached Biology News:A quarter of the world's population depends on degrading land 2New ecopsychology journal will premiere in spring 2009 2Genetic sleuth solves glaucoma mystery 2
(Date:7/23/2015)... ... July 23, 2015 , ... July ... by providing more targeted treatment options with fewer side effects, according to Erik ... Anderson Cancer Center. , At the American Brain Tumor Association (ABTA) National Patient ...
(Date:7/23/2015)... , July 23, 2015 /PRNewswire/ - Portage Biotech Inc. ... and Biohaven Pharmaceutical Holding Company Limited (Biohaven), are ... Investigational New Drug (IND) Application with the U.S. ... testing of BHV-0223. Portage holds 54% equity interest ... is a glutamate modulating agent and Biohaven has ...
(Date:7/23/2015)... 2015 OncoSec Medical Incorporated ("OncoSec") (NASDAQ: ... invites investors and the general public to its Annual ... Friday, July 31, 2015. The meeting will be held ... San Diego, California 92121.   ... also be available. Please use the following link to ...
(Date:7/23/2015)... , ... July 23, 2015 , ... Global Stem ... research in Santiago, Chile. The symposium will feature some of the world’s most ... day of high-level scientific discussion for medical professionals in general practice. , The ...
Breaking Biology Technology:Radiation Oncology Advances Improve Safety and Efficacy of Treatment for Brain Tumors 2Radiation Oncology Advances Improve Safety and Efficacy of Treatment for Brain Tumors 3Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 2Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 3Portage's Biohaven Announces IND Filing for BHV-0223 for Phase 1 Clinical Testing 4OncoSec to Webcast Annual Meeting of Stockholders 2Global Stem Cells Group Announces Plans to Hold International Symposium on Stem Cells and Regenerative Medicine in Santiago, Chile Sept. 3-4, 2015 2Global Stem Cells Group Announces Plans to Hold International Symposium on Stem Cells and Regenerative Medicine in Santiago, Chile Sept. 3-4, 2015 3
... Although the <A , href="http://www.ambion.com/catalog/CatNum.php?1632"> Silencer ... for labeling siRNA, they can , be ... can be used for this application. See "<A , ... Introduced dsRNA in Cells " for experimintal data using dsRNA , ...
... , RNA later is a tissue storage , ... fresh , tissues. (Ambion's ... specifically for use with frozen tissues - see "<A , ... Grinding Frozen Tissue " for more information.) Tissue , ...
... NAVIGATE THIS ARTICLE: <A , href="#1">What , ... href="#2">Advantages , > <A , ... , href="#4">Steps , , ... a Nuclease Protection , Assay? , ...
Cached Biology Technology:Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 2Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 3Fluorescently Labeling Long dsRNA with the Silencer siRNA Labeling Kit 4RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 2RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 3RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 4RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 5RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 6RNArticles: Keeping RNA Intact Prior to RNA Isolation - RNAlater 7Nuclease Protection Assays: The Basics 2Nuclease Protection Assays: The Basics 3Nuclease Protection Assays: The Basics 4Nuclease Protection Assays: The Basics 5Nuclease Protection Assays: The Basics 6Nuclease Protection Assays: The Basics 7Nuclease Protection Assays: The Basics 8Nuclease Protection Assays: The Basics 9Nuclease Protection Assays: The Basics 10
... Loading Buffer contains a precipitant to ensure that ... tracking dye to allow the user to follow ... ReddyRun™: ABgene ® s proprietary mixture ... same buffer composition used in ReddyRun™ molecular weight ...
... number is a new ... easily match Cornings product ... availability yet, please order ... number (Z71,381-3) or contact ...
Excellent safety and durability., Remote control can be easily operated in your hand., Constant voltage control with 2 sets of terminals., Precise and durable circuit design. ...
Gel Loading Buffer contains a precipitant to ensure that the samples sink into the wells and a tracking dye to allow the user to follow the progress of electrophoresis....
Biology Products: