News tagged with sulfur isotope
Origins of sulfur in rocks tells early oxygen story
Space & Earth / Earth Sciences
Apr 16, 2009 |
4.5 / 5 (8) |
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(PhysOrg.com) -- Sedimentary rocks created more than 2.4 billion years ago sometimes have an unusual sulfur isotope composition thought to be caused by the action of ultra violet light on volcanically produced ...
Search results for sulfur isotope
Rich Ore Deposits Linked to Ancient Atmosphere
Space & Earth / Earth Sciences
Nov 19, 2009 |
4.3 / 5 (3) |
0
(PhysOrg.com) -- Much of our planet's mineral wealth was deposited billions of years ago when Earth's chemical cycles were different from today's. Using geochemical clues from rocks nearly 3 billion years old, a group of ...
Sulfur signature changes thoughts on atmospheric oxygen
Space & Earth / Earth Sciences
Aug 23, 2006 |
4.7 / 5 (12) |
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Ancient sediments that once resided on a lake bed and the ocean floor show sulfur isotope ratios unlike those found in other samples from the same time, calling into question accepted ideas about when the Earth’s atmosphere ...
Unlike rubber bands, molecular bonds may not break faster when pulled
Jun 17, 2009 |
5 / 5 (1) |
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From balloons to rubber bands, things always break faster when stretched. Or do they? University of Illinois scientists studying chemical bonds now have shown this isn't always the case, and their results may have profound ...
Chemistry of Volcanic Fallout Reveals Secrets of Past Eruptions
Space & Earth / Earth Sciences
Jan 05, 2007 |
4.1 / 5 (11) |
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A team of American and French scientists has developed a method to determine the influence of past volcanic eruptions on climate and the chemistry of the upper atmosphere, and significantly reduce uncertainty in models of ...
Clean fuels could reduce deaths from ship smokestacks by 40,000 annually
Jul 08, 2009 |
4.5 / 5 (17) |
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Rising levels of smokestack emissions from oceangoing ships will cause an estimated 87,000 deaths worldwide each year by 2012 -- almost one-third higher than previously believed, according to the second major ...
Improving China's acid rain control strategy
Oct 14, 2009 |
2 / 5 (1) |
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Scientists are reporting the first evidence that China's sharp focus on reducing widespread damage to soil by acid rain by restricting sulfur dioxide air pollution may have an unexpected consequence: Gains ...
New technique put to use to test clean up of contaminated groundwater
Jan 30, 2009 |
4 / 5 (3) |
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Cleaning up the dangerous contaminants — dry-cleaning fluids, solvents and petroleum hydrocarbons — found in underground water presents one of the most urgent challenges facing environmental science. A report issued today ...
New way to measure sulfate particles
Physics /
Oct 07, 2005 |
not rated yet |
0
The University of Maryland and the National Institute of Standards and Technology created an improved technique to measure sulfur isotopic ratios.
Reactor leak halts Canada isotope work for 3 months
May 28, 2009 |
not rated yet |
1
A Canadian nuclear reactor that produced about a third of the world's supply of medical isotopes has halted operation for three months due to a heavy water leak, authorities said.
Methane-eating microbes can use iron and manganese oxides to 'breathe'
Space & Earth / Earth Sciences
Jul 09, 2009 |
4.6 / 5 (5) |
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Iron and manganese compounds, in addition to sulfate, may play an important role in converting methane to carbon dioxide and eventually carbonates in the Earth's oceans, according to a team of researchers ...
List of search results for sulfur isotope
