A Nitrogen oxides (NOx) is Compounds of nitrogen (N) and oxygen (O) in ambient air; i.e., nitric oxide (NO) and others with a higher oxidation state of N, of which NO2 is the most important toxicologically.
Other /More definition:
A nitrogen oxides (NOx) is any inorganic compound containing both nitrogen and oxygen. These compounds act as precursors to other pollutants such as nitrate and ozone. NOx includes nitric oxide (NO), nitrogen dioxide (NO2), and others. NOx are formed by natural processes such as lightning, forest fires, and microbial processes. Anthropogenic sources include agricultural fertilizers and combustion engines. Man-made sources currently equal natural sources (see Schlesinger, 1997).
Other /More definition:
A Nitrogen Oxides (NOx) is Gases consisting of one molecule of nitrogen and varying numbers of oxygen molecules. Nitrogen oxides are produced, for example, by the Combustion of fossil fuels in vehicles and electric power plants. In the atmosphere, nitrogen oxides can contribute to formation of photochemical ozone (smog), impair visibility, and have health consequences; they are considered pollutants.

Related Articles

Nitrogen Oxides (NOx): ■■■■■■■
A Nitrogen Oxides (NOx): is NOx is the collective term for nitrogen compounds such as NO and NO2. These . . . Read More
Air Toxics ■■■■■■
Air Toxics are any Air Pollutant for which a national Ambient Air quality standard (NAAQS) does not exist . . . Read More
Criteria Pollutants ■■■■■■
Criteria Pollutants are the 1970 amendments to the Clean Air Act required EPA to set National Ambient . . . Read More
Photochemical Modeling: ■■■■■
A Photochemical Modeling: is Photochemical modeling is computer modeling of reactions in the atmosphere . . . Read More
Ozone precursors ■■■■■
Ozone precursors are Chemical compounds, such as carbon monoxide, methane, non-methane hydrocarbons, . . . Read More
Peroxyacetyl nitrate (PAN) ■■■■
A Peroxyacetyl nitrate (PAN) is Pollutant created by action of UV component of sunlight on Hydrocarbons . . . Read More
Criteria pollutant ■■■■
A Criteria pollutant is a pollutant determined to be hazardous to human health and regulated under EPA's . . . Read More
Organic compound ■■■■
An Organic compound is Molecule that contains Atoms of the Element carbon, usually combined with itself . . . Read More
Industrial Air Pollution ■■■■
- Industrial Air Pollution : An Industrial Air Pollution is This term refers to the emissions of the . . . Read More
Ground-level Ozone ■■■■
A Ground-level Ozone is Ground-level Ozone is formed by a Chemical reaction between volatile organic . . . Read More