Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mercury on the horizon

21.12.2004


University of Nevada study finds plants assimilate mercury from air

Mercury gets around. A naturally occurring contaminant, mercury is found in water and soil but scientists are not exactly sure how mercury makes its way through the environment. Concerns over increasing levels of mercury contamination have sparked fish consumption advisories in certain areas.

Knowing how mercury ends up in these locations, however, is an area of concern for environmental scientists. Researchers at the University of Nevada, Reno recently discovered that plants play a significant role in how mercury travels.



“Based on previous studies, what we originally thought was that mercury in soil would be absorbed through a tree’s roots, then released through the tree’s leaves into the air,” said Jody Ericksen, a Nevada graduate student who studied the contaminant for her master’s degree in Environmental Science and Health. “We were wrong. What happened is that the plants absorbed the mercury from the air.”

According to Nevada researchers, once a tree’s leaves contain mercury, those leaves eventually fall off, decay and mercury goes back into the soil, air and, ultimately, water.

According to Mae Gustin, associate professor in the university’s Department of Natural Resources and Environmental Science, the results of the study could have global implications.

Mercury from coal-fired power plants, or from areas such as Nevada that have high levels of naturally occurring mercury, can be in the air for six to 12 months and can cross continents.

“Researchers who model how mercury travels through the environment tell us that even if the United States turned off all of its coal-fired power plants, we would still have mercury being deposited here because of China’s mercury emissions,” Gustin said. “For mercury controls to make a difference there has to be a global effort.”

The researchers’ study was published in a recent issue of Environmental Science & Technology, one of the most prestigious environmental science journals.

The study was funded with a grant from the EPA Experimental Program to Stimulate Competitive Research. Collaborators on the project included: Dave Schorran and James Coleman of the Desert Research Institute; Dale Johnson, a professor of Natural Resources and Environmental Science at the University of Nevada, Reno; and Steven Lindberg of the Oak Ridge National Laboratory.

Bob Conrad | EurekAlert!
Further information:
http://www.unr.edu

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

From rocks in Colorado, evidence of a 'chaotic solar system'

23.02.2017 | Physics and Astronomy

'Quartz' crystals at the Earth's core power its magnetic field

23.02.2017 | Earth Sciences

Antimicrobial substances identified in Komodo dragon blood

23.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>