Eye, nose, and throat irritation. May cause impaired lung function Increased respiratory infections in young children. pulmonary edema Diffuse lung injury Bronchitis
The two most prevalent oxides of nitrogen
are nitrogen dioxide (NO2) and nitric oxide (NO). Both are toxic gases with NO2
being a highly reactive oxidant and corrosive. The primary sources
indoors are combustion processes, such as unvented combustion appliances, e.g.
gas stoves, vented appliances with defective installations, welding, and
Source of Nitrogen dioxide includes
Kerosene heaters, un-vented gas stoves and heaters. Environmental tobacco
NO2 acts mainly as an irritant affecting
the mucosa of the eyes, nose, throat, and respiratory tract. Extremely
high-dose exposure may result in pulmonary edema and diffuse lung injury.
Continued exposure to high NO2 levels can contribute to the development of acute
or chronic bronchitis. Low level NO2 exposure may cause increased bronchial
reactivity in some asthmatics, decreased lung function in patients with chronic
obstructive pulmonary disease and increased risk of respiratory infections,
especially in young children.
Reduce exposure by venting the NO2
sources to the outdoors, and assuring that combustion appliances are correctly
installed, used, and maintained are the most effective measures to reduce