Navigation Links
Clearer look at how iron reacts in the environment
Date:9/7/2012

mistry and mineralogy of soils and surface waters.

Iron reduction is particularly important for the mobility of contaminants in the environment. Because many contaminants, most notably uranium, bind to iron, the change also can affect the spread of these contaminants. A soluble form of iron will help spread the contamination while iron with larger particles can be used to trap contaminants in filter systems. Knowledge of how fast iron oxides undergo reaction and dissolution controlled in part by the electron hopping rates will help the management of some contaminant remediation efforts.

"We believe that this work is the starting point for a new area of time-resolved geochemistry," said Benjamin Gilbert, a scientist at LBNL. "Time-resolved science seeks to understand chemical reaction mechanisms by making various kinds of "movies" that depict in real time how atoms and electrons move during reactions. We have imported some of these ideas and approaches into geochemistry, and are very excited about the future possibilities."

The research team detailed their findings and how they made these "movies" in a paper "Electron Small Polarons and Their Mobility in Iron (Oxyhdr)oxide Nanoparticles" published Sept. 6 in the journal Science.

Electron transfer was only made viewable by recent advances in light source technology that allow scientists to take a quick succession of pictures to track the action of the electron traveling through the iron oxide. The journey takes pico-to-nano-seconds, depending on temperature and the structure of the iron oxide.

"Much like a sports photographer must use a camera with a very fast shutter speed to capture an athlete in motion without blurring, to be able to watch electrons moving, we needed to use a exceedingly short and very bright (powerful) pulse of X-rays," said Jordan Katz, the lead author on the Science paper, formerly of LBNL and now a scientist at Denison University. "For th
'/>"/>

Contact: Tona Kunz
tkunz@anl.gov
630-252-5560
DOE/Argonne National Laboratory
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. IU biologists offer clearer picture of how protein machine systems tweak gene expression
2. Environmental activist David Suzuki is fifth recipient of CWRU’s Inamori Ethics Prize
3. Concern about plans to close unique Canadian environmental project
4. Study shows hope of greater global food output, less environmental impact of agriculture
5. 2012 Reed Elsevier Environmental Challenge winners announced
6. Wind concentrates pollutants with unexpected order in an urban environment
7. New UC Santa Barbara-based project to study contaminants in urban water environment
8. Wiley launches new interdisciplinary review WIREs Energy and Environment
9. Environmental groups should pool efforts to reach the public
10. Newfound gene may help bacteria survive in extreme environments
11. New DataONE portal streamlines access to environmental data
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, the ... eliminate the pain of trying to remember their usernames and ... fused to their smartphones. To assist people who have struggled ... company that created 1U and focuses on redefining identity, announced ...
(Date:12/19/2014)... , Dec. 18, 2014 Research and Markets ... "Micro Market Monitor: North America Perimeter Security Systems Market" ... The North American perimeter security market is ... to 2019. Although the U.S. market holds a larger share ...
(Date:12/17/2014)... NEW YORK , Dec. 15, 2014  HITLAB SM ... Practices (GCP) audit to confirm its adherence to current ... enables HITLAB to conduct regulated smart device and smart ... safety and research quality. "HITLAB is determined ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... may help to protect against some food allergies. Kefir, a ... health food, and is often used to wean babies, as ... in children under the age of three, with around 5-8% ... of the problematic food. , "Friendly" bacteria in kefir may ...
... in the event of a large-scale smallpox bioterrorist attack ... by researchers at Fred Hutchinson Cancer Research Center that ... , Instead, the current U.S. government policy of post-release ... workers and close contacts would be sufficient to thwart ...
... information is passed from parents to offspring via sperm or ... as yeast, the genes can be passed to the next ... occur in the genetic material after it has been duplicated ... mature gametes or spores. Near the end of the process, ...
Cached Biology News:Friendly bacteria in alcoholic milkshake could fight food allergies 2Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 2Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 3Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 4Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack 5Single molecular 'mark' seen as pivotal for genome compaction in spores and sperm 2
(Date:1/23/2015)... , Jan. 23, 2015  Array BioPharma Inc. (NASDAQ: ... reached a definitive agreement with Novartis Pharma AG to ... currently in Phase 3 development.  This agreement is conditional on ... PLC (GSK) on April 22, 2014, which are expected to ...
(Date:1/22/2015)... GEA Niro Soavi the leader in ... the PandaPLUS 2000, which is ideal for new applications ... cell disruption . This compact laboratory homogenizer is the ... food, food additives and ingredients as well as for ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Crystal Diagnostics (CDx) ... that it has received AOAC-PTM Certifications for the six non-O157 ... and O145; collectively referred to as STEC or the “Big-6”) ... colony forming unit (cfu) per 325 g of raw ground ...
(Date:1/22/2015)... Switzerland (PRWEB) January 22, 2015 Selexis ... characterized mammalian Research Cell Banks (RCBs) used for drug ... Research Cell Banks will include Next-Generation Sequencing ... genetic architecture de-risks biologic manufacturing by ensuring the integrity ...
Breaking Biology Technology:Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 2Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 3Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 4Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 5Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 6Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 7GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2
... WASHINGTON - A delegation led by Governor Doyle and ... week for the biotechnology industrys leading conference with goals ... states research and university community and to let others ... to members of the group, the delegation met its ...
... get difficult, its the companies who dont panic, that will ... years ago, I was working on a project for the ... San Jose, California. I was arranging and conducting seminars for ... again going through a make or break situation with many ...
... WI - GE Medical Systems, a unit of General ... by the U.S. Food and Drug Administration to begin ... (MRI) system. The Signa EXCITE 3.0T combines the increased ... with the breadth of imaging capabilities found on premium ...
Cached Biology Technology:On site at BIO 2003 2On site at BIO 2003 3On site at BIO 2003 4On site at BIO 2003 5A Race without a Finish Line! 2GE Medical Systems Receives FDA Clearance for New MRI System 2
Whole blood is collected from canines (any breed, either sex), refrigerated within 6 hours, processed within 24 hours and frozen at -20C....
... cloning of BAC (100+kb), fosmid (40kb), and ... stability than any othe BAC vector. On ... yields and easy recombinant DNA purification. Available ... (pSMART VC) vectors for the highest insert ...
Because it is manufactured at our ISO 9001–certified facilities in Eugene, Oregon, we can guarantee that FluoroPure grade propidium iodide is greater than or equal to 98% pure by HPLC....
MOUSE ANTI GUINEA PIG T-CELLS (PAN):FITC Immunogen: Guinea pig peritoneal T-cells...
Biology Products: