HOME >> BIOLOGY >> NEWS
Study: tree coring seems to be quicker, cheaper method of measuring radiation

CHAPEL HILL Monitoring uranium contamination by drilling wells costs a lot, but a new study suggests it may be possible to do the same monitoring far more cheaply by coring trees on potentially radioactive sites.

Dr. Drew Coleman, assistant professor of geologic sciences at the University of North Carolina at Chapel Hill, and his graduate student Michael Bulleri conducted the study. They presented their results today (Nov. 5) at a national meeting of the Geological Society of America in Boston.

"Based on work I did earlier, we set out to determine if we could monitor near-surface water contamination around a depleted uranium weapons manufacturing site outside Concord, Mass., by measuring uranium concentrations in the living parts of trees growing nearby," Coleman said.

Mikes results have been fantastic. By testing the sapwood the living parts of oak trees he cored close to the site -- he has found a definite bulls-eye pattern around the site where the concentration goes up the closer one gets to it.

Bulleri took all their samples on public and private lands surrounding the facility, which used to be owned by Nuclear Metals Inc. and has been owned by the Starmet Corp. since 1997.

The two tested samples using a thermal ionization mass spectrometer at UNC and a technique known as isotope dilution. They could distinguish between natural uranium from the soil and depleted uranium contamination by measuring the ratios of uranium 238 to uranium 235 in each sample.

Natural uranium has a ratio of 137.88 atoms of 238 for every one atom of 235, Coleman said. The depleted form what is left over after an enrichment process used for making nuclear fuels and bombs has a ratio of about 500 to one.

Trees suck up water beneath the ground and store the radioactivity it contains for many years, he said. Comparing isotopes allows researchers to pinpoint the radioactive contaminations source and level.

We found theres
'"/>

Contact: David Williamson
david_williamson@unc.edu
919-962-8596
University of North Carolina at Chapel Hill
5-Nov-2001


Page: 1 2

Related biology news :

1. Study: Emission of smog ingredients from trees is increasing rapidly
2. Study: A little help from friends makes wounds heal faster
3. Study: Mothers turn fearless when peptide level drops
4. Study: Artificial sweetener may disrupt bodys ability to count calories
5. Study: Mimicking viruses may provide new way to defeat them
6. Study: Stroke victims may retain continuous motion ability
7. Study: Adults maintain significant improvement in ADHD with long-term use of amphetamine
8. Study: Prenatal screening in Haiti region cut syphilis by 75 percent
9. Study: Isoflavone-enriched soy proteins fail to increase bone mineral density in young women
10. Study: Genome-wide scanning unravels complex birth defect
11. Study: Higher energy intake, obesity affects all age groups, not just youths

Post Your Comments:
(Date:11/21/2014)... 20, 2014   Atmel® Corporation (NASDAQ: ... and touch technology solutions, today launched the industry,s first ... the widest V cc range from 1.7V to ... faster I 2 C bus communication speeds, and are ... making them ideal for consumer, industrial, computer, and medical ...
(Date:11/15/2014)... NEW YORK , Nov. 13, 2014  While we ... of technology Doctor McCoy used in "Star Trek" to gain ... and tools designed to work with smartphones and tablets for ... corners of the healthcare world. This may seem a tad ... are ready to adopt some of these technological opportunities into ...
(Date:11/7/2014)... conjunction with the Glendale and ... the Verdugos has announced the " GLENDALE - ... to keep the Verdugo Regional Crime Lab operational after its ... existence, the Lab has processed more than 400 DNA samples, ... "Because our number one priority is the wellbeing of ...
Breaking Biology News(10 mins):Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
(Date:11/22/2014)... CannLabs, Inc. (OTCQB: CANL), the ... testing methodologies relating to cannabis, today announced that it ... credit from an existing stockholder of the Company. ... commitment from one of our existing stockholders,” stated ... will help accelerate our planned expansions into the Connecticut ...
(Date:11/22/2014)... (PRWEB) November 22, 2014 Respiratory ... simulate the proper management of life-like respiratory ailments ... lung devices . Grand Rapids-based, Michigan Instruments Inc. ... donate two of the respiratory simulation units to ... each. Grand Valley and Muskegon Community College are ...
(Date:11/21/2014)...   TRU-D SmartUVC LLC and its UK partners, ... disinfection robot, TRU-D SmartUVC, at FIS 2014 in ... 26 at Stand 23. The conference, hosted by ... largest infection-related event of its kind and brings ... the leading events of its type throughout the world. This ...
(Date:11/21/2014)... Alto, Calif. (PRWEB) November 20, 2014 ... a nonprofit, public policy research organization representing leading ... pharmaceutical firms, and PwC US today ... states in life sciences industry growth. The trend ... 2013. The 2015 California Biomedical Industry Report ...
Breaking Biology Technology:CannLabs Secures $750,000 Line Of Credit 2Michigan Instruments Donates Two Respiratory Simulation Training and Test Lung (TTL) Devices to Grand Valley State University 2Michigan Instruments Donates Two Respiratory Simulation Training and Test Lung (TTL) Devices to Grand Valley State University 3TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 2TRU-D SmartUVC to Showcase Superbug-Killing Robot at FIS 2014 3California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 2California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 3California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 4
Cached News: