Navigation Links
Lawrence Livermore helps find link to arsenic-contaminated groundwater
Date:3/4/2013

ear weapons during the Cold War (1955-1963) caused a surge in global levels of carbon-14 (14C), and remains in all living things. Carbon-14 or radiocarbon is naturally produced by cosmic ray interactions with air and is present at low levels in the atmosphere and food. Although nuclear weapon testing was conducted at only a few locations, excess levels of 14C in the atmosphere rapidly dispersed and equalized around the globe.

According to Buchholz, "The bomb curve forms a chronometer of the past 60 years."

The radiocarbon signature of DNA is a direct measure of the carbon used during microbial respiration and growth. In this study, the team developed a method to filter, extract and purify DNA from groundwater aquifers for radiocarbon analysis to determine the organic carbon pools fueling microbial reduction.

"We were able to separate the recent bomb pulse radiocarbon from the natural carbon signature and found the arsenic levels are now directly tied to a natural process as opposed to being driven by human activities," Buchholz said.

The results may help scientists understand the causes of arsenic contamination in the region, and the development of potential mitigation strategies.


'/>"/>

Contact: Anne Stark
stark8@llnl.gov
925-422-9799
DOE/Lawrence Livermore National Laboratory
Source:Eurekalert

Page: 1 2

Related biology news :

1. The American Society for Microbiology honors Lawrence Corey
2. Protein jailbreak helps breast cancer cells live
3. Newly found protein helps cells build tissues
4. New iPad, iPhone app helps mariners avoid endangered right whales
5. University of Minnesota invention helps advance reliability of alternative energy
6. New analysis helps guide use of erlotinib in advanced non-small cell lung cancer
7. Gene signature helps identify risk of relapse in lung cancer patients
8. Clinical trial launches to see whether vitamin D helps treat multiple sclerosis
9. Scripps research scientists find anticonvulsant drug helps marijuana smokers kick the habit
10. New musical pacifier helps premature babies get healthy
11. Worlds largest release of comprehensive human cancer genome data helps speed discoveries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ... addition of the "iPhone 5S Fingerprint Sensor ... report to their offering. ... acquisition of AuthenTec in July 2012, Apple introduced ... It is currently the only device of Apple ...
(Date:12/19/2014)... 18, 2014  23andMe, Inc., the leading personal genetics ... pinpoints fine-scale differences in genetic ancestry of individuals from ... Since immigrants first arrived more than four hundred ... has served as a meeting place for peoples from ... the ongoing mixing of peoples with African, European, and ...
(Date:12/17/2014)... , Dec. 15, 2014 Research and Markets ... addition of the "Samsung Galaxy S5 - ... report to their offering. ... totally different sensing technology than the iPhone 5S, ... sensor in its product. The Galaxy ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... EUGENE, Ore.(Aug. 20, 2007)Nitric acid is a notoriously strong and ... our atmosphere. However, a team of researchers have found that ... top of a water surface. The discovery of the ... the surface of water requires us to re-evaluate how we ...
... of G&D, Drs. Maria Divina Deato and Robert Tjian ... alternative transcriptional core promoter complex directs cell-type specific differentiation ... of transcriptional control of terminal cell differentiation, and will ... date at www.genesdev.org . For nearly 30 ...
... after prior full-dose conventional radiation therapy respond to Boron ... a Phase I/II study at the Helsinki University Hospital, ... Heikki Joensuu, University of Helsinki, considers the results ... field for BNCT, since thus far BNCT has been ...
Cached Biology News:University of Oregon researcher finds that on water's surface, nitric acid is not so tough 2A new radiation therapy treatment developed for head and neck cancer patients 2
(Date:12/24/2014)... 2014 Nashville Fertility Center announced that ... for the American Society for Reproductive Medicine (ASRM), a ... in reproductive medicine. In his new role as ... executive board and will have a voice in furthering ... actively supported ASRM since 1984 when he joined while ...
(Date:12/24/2014)... BEIJING , Dec. 23, 2014 ... or the "Company"), a leading fully integrated plasma-based ... today announced that its majority-owned subsidiary, Shandong Taibang ... Practices ("GMP") certification from the China Food and ... factor production facility. As previously disclosed in the ...
(Date:12/24/2014)... , Dec. 23, 2014 Sigma-Aldrich Corporation ... the waiting period under the Hart-Scott-Rodino Antitrust Improvements ... expired on December 22, 2014, thereby completing the ... for the acquisition of the Company by Merck ... clearance satisfies another condition to closing the transaction, ...
(Date:12/22/2014)... (PRWEB) December 22, 2014 The ... global leader of technical training across the life sciences ... Data Management (SCDM) to provide the organization's members ... programs —providing access to the more than 350 sessions ... members with 10% off when registering for a ...
Breaking Biology Technology:Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 2Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives U.S. Antitrust Clearance 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3
... , CAMBRIDGE, Mass. , April 28 ... Research Awards Program.  Given annually, the awards will fund ... of diseases and other important human traits. To inaugurate ... interpretation services to three winning research groups, each of ...
... ... browsers enable researchers to quickly and effectively use these invaluable resources. , ... Seattle, WA (PRWEB) April 26, 2010 -- OpenHelix ... on the Overview of Genome Browsers. , , , Ensembl is a genome browser ...
... , LELYSTAD and ,S-HERTOGENBOSCH, The Netherlands ... based biotechnology firm focusing on,protein mimicking technology for the generation of ... therapeutic vaccine,portfolio with Immunovo BV of ,s-Hertogenbosch. Under the terms of ... a,minority interest in Immunovo. , ...
Cached Biology Technology:Knome Announces KnomeDISCOVERY Research Awards Program 2New and Updated Online Tutorials for Ensembl Legacy and Overview of Genome Browsers 2New and Updated Online Tutorials for Ensembl Legacy and Overview of Genome Browsers 3Pepscan Signs Partnering Agreement With Immunovo for its Therapeutic Vaccine Portfolio 2Pepscan Signs Partnering Agreement With Immunovo for its Therapeutic Vaccine Portfolio 3
Immunogen for A300-655A was a phosphorylated synthetic peptide, which represented a portion of human RNA Polymerase II (GeneID 5430) around serine 5 of the C-terminal repeat YSPTSPS....
Acetylcholinesterase from human and monkey....
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. ...
... systems. , Integrated Instrument Control , ... EZChrom Elite can be configured with a ... provides a completely integrated system to control instrument's operation, collect andstore ... ...
Biology Products: