In a scientific sense it had become practice to calculate both NO + NO 2, when measuring oxides of nitrogen levels in emissions.
22.
Particulate and gaseous pollutants, such as soot, ozone, sulfur dioxide, oxides of nitrogen, can cause dust, soiling, and irreversible molecular damage to materials.
23.
Nevertheless environmental experts see the production of oxides of nitrogen as a major menace in the formation of greenhouse gases and photochemical smog.
24.
The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition into oxides of nitrogen and water.
25.
Also released into the air : hydrochloric acid, of oxides of nitrogen, of particulate matter 10 ?m, and of polychlorinated dioxins and furans.
26.
It serves as a carrier for oxides of nitrogen ( NOx ) into rural regions and causes ozone formation in the global troposphere.
27.
Through retrofitting boosted-over-fire-air ( BOFA ) technology on all the boilers emissions of oxides of nitrogen ( NOX ) are being further reduced.
28.
Alkyl nitrites decompose slowly on standing, the decomposition products being oxides of nitrogen, water, the parent alcohol, and polymerization products of the corresponding aldehyde.
29.
It doesn't pollute water like MTBE . But critics note that it adds oxides of nitrogen that can make smog worse in some instances.
30.
But the benefits include a reduction in the oxides of nitrogen and a reduction of the tendency of an engine to knock, he said.
