Nitrogen Oxides (NOx)
Nitrogen oxides form when fuels are burned at high temperatures। Your car and power plants that burn coal, oil, and natural gas are the major producers. These pollutants can cause lung irritation and inhibit the body's ability to fight off diseases such as influenza and pneumonia. They also help to form ozone and particulate matter. Nitrogen dioxide is decomposed by sunlight into nitrogen monoxide and atomic oxygen, which in-turn combines immediately with oxygen to form ozone (03). The more sunlight available, the faster the reaction goes. Therefore, during summer in areas with high traffic, concentrations will increase.