Nitrogen Monoxide (nitric oxide) - NO is the principal emitted NOx gas from high temperature combustion in air. This gas can acts a catalyst in the reactions that cause the destruction of ozone. Reacting with ozone and tropospheric radicals, NO is inextricably linked with the polluted urban atmospheric production of NO2, ozone, and other secondary pollutants such as peroxyacetyl nitrate. [Environmental; v30; 22-23; 1988.] [Science; v242; 555-558; 1988.] Atmospheric Chemistry Glossary