Nitrogen oxides health effects

National Ambient Air Quality Standards. Under the Clean Air Act, six criterion pollutants, ie, pollutants of special concern, have been estabhshed by the EPA sulfur oxides (SO ), particulates, carbon monoxide (CO), nitrogen oxides (NO ), o2one (photochemical oxidants), and lead. National Ambient Air QuaUty Standards (NAAQS) were developed by EPA based on threshold levels of air pollution below which no adverse effects could be experienced on human health or the environment. 

Nitrogen oxides High-temperature reaction between Adverse health effects... 

S. D. Lee (ed.). Nitrogen Oxides and their Effects on Health, Ann Arbor Publishers, Michigan, 1980, 382 pp. 

Nitrogen oxides High-temperature reaction between atmospheric nitrogen and oxygen, e.g. during combustion Byproduct from manufacture of fertilizer Adverse health effects Sensory irritants Reduced visibility Crop damage... 

For the past three decades, active research has been carried out on N-nitroso compounds (NOC) and related compounds. The impact of NOC and nitrogen oxides regarding their effect on human health and safety aspects is well documented in the literature61-63. Exposure to nitrogenous chemicals, pollutants and their precursors is mainly via ingestion however, in some cases inhalation is the major route of exposure. 

Closing volume measurement, 29S-96 Colorimetric analysis for air monhoriqg, 262-64,27S to measure nitrogen oxides, 269 Community Health Effects Surveillance Studies (chess), 9,432 Concentration. See Ozone otmcentration Feroi aoetyliiitrate concentration Photochemical-oxidant concentration... 

The concentration of nitrogen oxides found in the air is almost always much less than these levels, and the health effects described here rarely occur except in accidents or spills in which nitrogen dioxide is released to the air. Instead, the most serious health consequences related to NO exposure occur indirectly, when nitrogen dioxide reacts with other air pollutants to form photochemical smog... 

Decreases in nitrogen oxide emissions are also expected to have positive health effects by reducing the nitrate component of inhalable particulates and reducing the nitrogen oxides available to react with volatile organic compounds (VOCs) and form ozone. Ozone impacts on human health include a number of morbidity and mortality risks associated with lung disorders. 

Most health effects associated with nitrogen oxides (NOjc) are attributed to nitrogen dioxide. The main source of NOx in homes can be traced to gas stoves and heaters, where combustion takes place to produce heat. The combustion first produces NO, which then oxidizes rapidly to N02. High levels of N02 (approximately 150 ppm) can be lethal, while concentrations in the range of 50-150 ppm can produce lung disease. Lower concentrations may lead to eye, nose, and throat irritation. 

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