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Last updated on April 18, 2014 at 17:24 EDT

Latest Nitrogen oxide Stories

2008-03-31 14:01:51

Could combustion without flames be used to build industrial gas turbines for power generation that are much more efficient than current models and produce almost no polluting emissions? Researchers in the Middle East provide a possible answer in the current issue of the Inderscience publication, International Journal of the Environment and Pollution.Mohamed Sassi of The Petroleum Institute in Abu Dabi (United Arab Emirates) and colleagues, Mohamed Hamdi and Hamaid Bentîcha,...

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2008-03-20 03:05:00

Chemists at the University of California, San Diego have discovered that a chemical reaction in the atmosphere above major cities long assumed to be unimportant in urban air pollution is in fact a significant contributor to urban ozone"”the main component of smog. Their finding, detailed in the March 21 issue of the journal Science, should help air quality experts devise better strategies to reduce ozone for the more than 300 counties across the United States with ozone levels that...

2008-02-09 03:00:00

By Fine, Philip M Sioutas, Constantinos; Solomon, Paul A ABSTRACT Secondary aerosols comprise a major fraction of fine particulate matter (PM^sub 2.5^) in all parts of the country, during all seasons, and times of day. The most abundant secondary species include sulfate, nitrate, ammonium, and secondary organic aerosols (SOAs). The relative abundance of each species varies in space and time as a function of meteorology, source emissions strength and type, thermodynamics, and atmospheric...

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2005-07-21 17:35:00

STOCKHOLM, Sweden -- From catalytic converters to alternative fuels, the fight against big-city smog has for years been fought inside combustion engines and exhaust pipes. Now, scientists are taking the fight to the streets by developing "smart" building materials designed to clean the air with a little help from the elements. Using technology already available for self-cleaning windows and bathroom tiles, scientists hope to paint up cities with materials that dissolve and wash away...

2005-06-06 14:14:43

Nitrogen oxides produced by huge fires and fossil fuel combustion are a major component of air pollution. They are the primary ingredients in ground-level ozone, a pollutant harmful to human health and vegetation. But new research led by a University of Washington atmospheric scientist shows that, in some regions, nitrogen oxides emitted by the soil are much greater than expected and could play a substantially larger role in seasonal air pollution than previously believed. Nitrogen oxide...