Navigation Links
Scientists discover how nanocluster contaminants increase risk of spreading
Date:4/17/2008

For almost half a century, scientists have struggled with plutonium contamination spreading further in groundwater than expected, increasing the risk of sickness in humans and animals.

It was known nanometer sized clusters of plutonium oxide were the culprit, but no one had been able to study its structure or find a way to separate it from the groundwater.

Scientists at the U.S. Department of Energys Argonne National Laboratory, in collaboration with researchers from the University of Notre Dame, were able to use high-energy X-rays from the Argonne Advanced Photon Source to finally discover and study the structure of plutonium nanoclusters.

When plutonium forms into the clusters, its chemistry is completely different and no one has really been able to assess what it is, how to model it or how to separate it Argonne senior chemist Lynda Soderholm said. People have known about and tried to understand the nanoclusters, but it was the modern analytical techniques and the APS that allowed us understand what it is.

The nanoclusters are made up of exactly 38 plutonium atoms and had almost no charge. Unlike stray plutonium ions, which carry a positive charge, they are not attracted to the electrons in plant life, minerals, etc. which stopped the ions progression in the ground water.

Models have been based on the free-plutonium model, creating discrepancies between what is expected and reality. Soderholm said that with knowledge of the structure, scientists can now create better models to account for not only free-roaming plutonium ions, but also the nanoclusters.

The clusters also are a problem for plutonium remediation. The free ions are relatively easy to separate out from groundwater, but the clusters are difficult to remove.

As we learn more, we will be able to model the nanoclusters and figure out how to break them apart, Soderholm said. Once they are formed, they are very hard to get rid of.

<
'/>"/>
Contact: Brock Cooper
bcooper@anl.gov
630-252-5565
DOE/Argonne National Laboratory
Source:Eurekalert

Page: 1 2

Related biology news :

1. UK scientists working to help cut ID theft
2. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
3. Comet probes reveal evidence of origin of life, scientists claim
4. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
5. Male elephants get photo IDs from scientists
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
8. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
9. Clemson scientists shed light on molecules in living cells
10. Scientists tackle mystery mountain illness
11. T. rex quicker than Becks, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/11/2015)... According to a ... Product (Cards and Readers, Biometrics, Controllers, Management Software), ... Healthcare, Education) and By Geography - Global Forecast and Analysis to ... Control Market is expected to reach $10.4 ... of 10.6% between 2014 and 2020. ...
(Date:2/5/2015)... North Carolina , 5. Februar 2015 ... Jahr als spezialisiertes Logistikunternehmen und hat eine ... einzige klinische Logistikfirma (Clinical Logistics Organization – ... der neuen Kampagne lautet First , ... Foto: http://photos.prnewswire.com/prnh/20150205/173753 ...
(Date:2/5/2015)... , Jan. 26, 2015 NXT-ID, Inc. (NASDAQ: ... "Company"), a biometric authentication company focused on the growing ... corporate website ( http://www.nxt-id.com/ ) as part of its ... wallet. The Company launched its new consumer website for ... Pereira , CEO of NXT-ID said, "Our new corporate ...
Breaking Biology News(10 mins):Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4Marken startet Kampagne mit Patienten im Mittelpunkt 2Marken startet Kampagne mit Patienten im Mittelpunkt 3NXT-ID, Inc. Launches New Corporate Website As Part Of Ongoing 2015 Branding Initiatives For Wocket Smart Wallet 2NXT-ID, Inc. Launches New Corporate Website As Part Of Ongoing 2015 Branding Initiatives For Wocket Smart Wallet 3
... proteins at once and enabling new experiments that could dramatically ... invented by a team of University of Chicago scientists. ... new micro-western arrays combine the specificity of the popular "Western ... The technique will allow scientists to observe much of a ...
... LA JOLLA, CA-The neuropeptide corticotropin-releasing factor (CRF) makes ... is as the opening act in the stress response, ... at the Salk Institute for Biological Studies have found ... where it increases insulin secretion and promotes the division ...
... Civil engineers at the University of Washington and the U.S. ... look at how dams in the Columbia River basin, the ... climate. They developed a new technique to determine when to ... to refill them in the spring to provide storage for ...
Cached Biology News:Illuminating protein networks in 1 step 2Illuminating protein networks in 1 step 3Stress peptide and receptor may have role in diabetes 2Stress peptide and receptor may have role in diabetes 3Managing Pacific Northwest dams for a changing climate 2
(Date:3/5/2015)... 05, 2015 Bi-Biomics today announced ... and stain additive. The improvement in histological quality ... features present in all daughter cells. , After ... packaging was analyzed at 1000-1600x using light microscopy. ... patterning in all daughter cells displayed predominant binary ...
(Date:3/5/2015)... , March 5, 2015  In response to the ... Miami, FL on February 12, 2015. ... of strong financial health and their SUDOSCAN® devices have ... has indicated. Furthermore, Impeto prefers to have the courts decide ... are more than 40 articles written by Key Opinion ...
(Date:3/4/2015)... 4, 2015 In an article published and ... for Health Security review the clinical aspects of diseases ... as bioweapons. The article, "Clinical Management of Potential Bioterrorism-Related ... website of the New England Journal of Medicine ... Toner , and Tom Inglesby—review the clinical management of ...
(Date:3/4/2015)... 04, 2015 Research and Markets ... the "Global Biologics and Biosimilars Industry Report ... The Global Biologics and Biosimilars Industry ... on the current state of the biologics and ... basic overview of the industry including definitions, classifications, ...
Breaking Biology Technology:Impeto Medical Responds to Published Allegations by LD Technology LLC ("LD") 2Latest Clinical Information On Bioterrorism Threats 2Global Biologics and Biosimilars Industry Report 2015-2020 2
... College has almost finished teaching its first class of ... and already it has gained recognition and the opportunity to ... receieved a grant on Tuesday of $495,000 from the U.S. ... its partnership program. The funds are earmarked for an initiative ...
... UW researchers have put enough monitoring equipment on a bicycle ... with soap bubbles, and found losing sleep makes you hungry. ... atheletes ,Put a GPS monitor on a bicycle, add ... torque and rhythm created by their peddling, record it all ...
... demonstrations of ferrofluid, magnetic particles bonded to a liquid. ... able to manipulate materials just atoms at a time got ... Nanoworld , an exhibit on display at the University of ... efforts such as this one can make nanotechnology, the study ...
Cached Biology Technology:Gateway Technical College pilots IBM training program 2A week in UW research: fusion, racing and sleep 2A week in UW research: fusion, racing and sleep 3Nanotech exhibit opens at UW-Madison 2
... CLS number is a ... to easily match Cornings ... no availability yet, please ... Sigma-Aldrich number (Z71,448-8) or ...
A convenience pack containing one each of the most popular sizes of Cat. No. 4980 flask. Designed for the low volume user, a case contains one each of five sizes: 50mL, 125mL, 250mL, 500mL, and 1L....
Narrow-mouth has heavy-duty rim. Approximate graduations are in durable white enamel. Extra large marking space. capacity 125 mL Special grade: student grade...
... This CLS number is ... to easily match Cornings product ... yet, please order under the ... contact customer service for assistance. ...
Biology Products: