HOME >> BIOLOGY >> NEWS
Spectroscopy for the real world

BERKELEY, CA One good thing leads to another. A team of scientists used a first-of-its-kind spectroscopy system at the U.S. Department of Energy's Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory to obtain the first direct observations of negatively charged ions accumulating on the surfaces of salt solutions.

Their work paves the way for a better understanding of the role played by tiny airborne salt particles, emitted into the air by crashing waves and sea spray, in a slew of atmospheric and environmental processes, such as the destruction of the ozone layer.

"This is important because many atmospheric phenomena are driven by reactions with the surface of sea salt aerosols," says Miquel Salmeron, a physicist with Berkeley Lab's Materials Sciences Division who has pioneered new ways of exploring the molecular behavior of liquids on surfaces. "We found that anions [negatively charged ions] concentrate at the surface of salt grains as they dissolve in water."

The research also underscores the merits of a new spectroscopy system, recently developed by Salmeron and colleagues, which enables scientists to study the chemical underpinnings of everyday catalytic, biological, and ecological phenomena in their natural environment, that is, at almost normal pressures and in the presence of water vapor.

Their study was published in the Jan. 28 issue of the journal Science.

The ALS is one of only two places in the world where photoelectron spectroscopy can be performed on surfaces at pressures above 1 torr (a unit of pressure equivalent to 1 millimeter of mercury in a barometer). The only other such instrument is at a synchrotron in Berlin, Germany, which follows Salmeron's design. All other photoelectron spectroscopy systems require a dry, high-vacuum environment.

"But a lot of information is lost once a compound is placed in a vacuum, so we developed an instrument to circumvent this problem. In
'"/>

Contact: Dan Krotz
dakrotz@lbl.gov
510-486-4019
DOE/Lawrence Berkeley National Laboratory
31-Jan-2005


Page: 1 2 3

Related biology news :

1. Pollution causes 40 percent of deaths worldwide, study finds
2. Waters off Washington state only second place in world where glass sponge reefs found
3. Stem cell licensing deal positions Toronto as world leader in technology
4. NASA-funded robotic sub finds bottom of worlds deepest sinkhole
5. Genome of Clostridium botulinum reveals the background to worlds deadliest toxin
6. Alarming acceleration in CO2 emissions worldwide
7. Another world-first for LCTs Xeno facilities
8. Journal details how global warming will affect the worlds fisheries
9. Biodiversity loss linked to economic inequality worldwide
10. NASA mission explores worlds deepest sinkhole
11. Double honor recognises world-class science and spin-out success

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/9/2016)... , March 9, 2016 ... government identified that more than 23,000 public service employees ... had been receiving their salary unlawfully.    --> ... country,s government identified that more than 23,000 public service ... or had been receiving their salary unlawfully.    ...
(Date:3/8/2016)... 8, 2016   Valencell , the leading ... it has secured $11M in Series D financing. ... new venture fund being launched by UAE-based financial ... existing investors TDF Ventures and WSJ Joshua Fund. ... its triple-digit growth and accelerate its pioneering innovation ...
(Date:3/3/2016)... , March 3, 2016  2016FLEX, organized ... this week highlighting advancements in flexible, hybrid and ... record setting attendance - have gathered for short ... fast-growing field of electronics. The Flex Conference celebrates ... point for companies, R&D organizations, and universities contributing ...
Breaking Biology News(10 mins):
(Date:4/28/2016)... NEW YORK , April 28, 2016 /PRNewswire/ ... biotechnology acceleration company reports the Company,s CEO  was ... capital titled Accelerators Enter When VCs Fear To ... Life Science Leader magazine is an ... work for everything from emerging biotechs to Big ...
(Date:4/28/2016)... ... April 28, 2016 , ... Morris Midwest ( ... for regional manufacturers at its Maple Grove, Minnesota technical center, May 11-12. ... and Trumpf. Almost 20 leading suppliers of tooling, accessories, software and other ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... mobile devices with fingerprint recognition for secure access, voice recognition for hands-free communication, ... ways consumers are interacting with biometrics technology today. But if they asked ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... Clark has joined the company as an Expert Consultant. Mr. Clark was ... collaborations and managing the development of small molecule monographs based on analytical methods. ...
Breaking Biology Technology:
Cached News: