Collective symbol for nitrogen oxides; produced partly during combustion and partly by reaction between oxygen and nitrogen in the atmosphere Present in flue gases and vehicle exhaust gases; form acids and nutrient compounds causing eutrophication
Nitrogen oxides is a term used to refer to nitric oxide (NO) and nitrogen dioxide (NO2) Nitric oxide is a toxic, colourless, flammable gas with a slight odour Nitrogen dioxide is a reddish brown, nonflammable, gas with a detectable smell Nitrogen dioxide contributes to ground-level ozone or smog
(nitrogen oxides, given as NO2) are acidifying air emissions - this environmental effect is taken into account in SO2 equivalents NOx also acts as a precursor for summer smog which is included in the ozone precursor equivalents
Oxides of nitrogen (NOx) are a family of reactive gaseous compounds that contribute to air pollution in both urban and rural environments NOx emissions are produced during the combustion of fuels at high temperatures The primary sources of atmospheric NOx include highway sources (such as light-duty and heavy-duty vehicles), nonroad sources (such as construction and agricultural equipment, and locomotives) and stationary sources (such as power plants and industrial boilers) NOx can irritate the lungs, cause bronchitis and pneumonia, and lower resistance to respiratory infections Nitrogen oxides are an important precursor both to ozone and acid rain, and may affect both terrestrial and aquatic ecosystems
A general formula for oxides of nitrogen (NO,NO2) They react with moisture in the respiratory tract to produce acids that corrode and irritate tissue, causing congestion and pulmonary edema Symptoms of acute exposure can develop over 6 to 24 hours Chronic exposure to low levels can cause irritation, cough, headache, and tooth corrosion Exposure to 5 to 50 ppm of NO2 can cause slowly evolving pulmonary edema Commonly produced by combustion processes, including motor vehicle engines
nitrogen oxides; a general expression for nitric oxide (NO) and nitrogen dioxide (NO2) (Nitrogen Oxides)
oxides of nitrogen The two primary oxides of nitrogen involved in air pollution are nitric oxide and nitrogen dioxide (NO2) Nitrogen dioxide is a reddish-brown gas with a pungent smell It can affect the respiratory system exacerbating asthma The main health issues associated with NO2 are increased incidence of lower respiratory-tract infections in children and increased airway responsiveness in asthmatics In the atmosphere, nitrogen oxides are changed into nitric acid, which is washed out in rain and is a principal precursor of acid rain
(nitrogen oxides) a type of gas emitted by automobiles and industrial sources and regulated by the EPA under provisions of the Clean Air Act NOx can affect human health and plant life, and trigger photochemical smog
Nitrogen oxides One of the six criteria pollutants The term used to describe the sum of nitric oxide (NO), nitric dioxide (NO2), and other oxides of nitrogen, which plays a major role in the formation of ozone The major sources of man-made NOx emissions are high temperature combustion processes, such as those occurring in automobiles and power plants