Nitrogen Oxides

Several air-polluting gases composed of nitrogen and oxygen which play an important role in the formation of photochemical smog. Nitrogen oxides are collectively referred to as NOx, where x represents a changing proportion of oxygen to nitrogen.

Internal combustion engines are significant contributors to the worldwide nitrogen oxide emissions. For the purpose of emission regulations, NOx is composed of colourless nitric oxide (NO), and the reddish-brown and very toxic and reactive nitrogen dioxide (NO2). Sometimes defined as Thermal NOx

Other nitrogen oxides, such as nitrous oxide N2O, are not regulated emissions.

Gas Turbines

NOx Emissions from Stationary Gas Turbines:

Reference

"Alternative Control Techniques Document - NOx Emissions from Stationary Gas Turbines", U. S. ENVIRONMENTAL PROTECTION AGENCY, EPA-453/R-93-007

See also: Gas Turbine, Nitrogen, Nitrogen Monoxide, Nitrous Oxide, Oxygen, Toxic Emission.

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Subjects: Chemistry Environmental