a criteria air pollutant Nitrogen oxides are produced from burning fuels, including gasoline and coal Nitrogen oxides are smogformers, which react with volatile organic compounds to form smog Nitrogen oxides are also major components of acid rain
A group of gases that cause acid rain and other environmental problems, such as smog and eutrophication of coastal waters Burning fossil fuels, such as coal and gasoline, releases NOx into the atmosphere Various programs are reducing NOx emissions, including the Acid Rain Program and NOx cap and trade programs
(NOx)-gases formed in great part from atmospheric nitrogen and oxygen when combustion takes place under conditions of high temperature and high pressure; considered a major air pollutant and precursor of ozone
(NOX) are often mentioned in discussions of nitrogen-based air pollution as a reference to both nitric oxide (NO) and nitrogen dioxide (NO2) In addition to particulates and sulfur dioxide, NOX is one of the major electricity-related pollutants It can transform to nitrates in the atmosphere (which is a fine particulate)
These are produced whenever fuel is burned Road traffic is the biggest producer of NOx in the UK - 51% of the total As well as reacting with hydrocarbons NOx emissions are further oxidised in the atmosphere contributing to the production of acid rain
since NO and NO2 are tightly linked in tropospheric chemistry, atmospheric chemists have coined the symbol NOx (pronounced "nocks") to refer to the sum of the concentrations of both species The concentration of NOx in conjunction with concentrations of non-methane hydrocarbons (NMHC's) is an important criteria in determining ozone levels in polluted areas
Gaseous compounds of nitrogen and oxygen produced directly or indirectly from the combustion of fossil fuels and from processes used in chemical plants Three forms of nitrogen oxides are nitric oxide (NO), nitrogen dioxide (NO2) and nitrous oxide (N2O) Atmospheric emissions of nitrogen oxide combine with oxygen to form nitrogen dioxide, which in turn reacts with water vapor to form nitric acid, a component of acid deposition Nitrogen dioxide is listed as a criteria pollutant
Compounds produced by combustion, particularly when there is an excess of air or when combustion temperatures are very high NOx are primary air pollutants
A criteria air pollutant Nitrogen oxides are produced from burning fuels, including gasoline and coal Nitrogen oxides are smog formers, which react with volatile organic compounds to form smog Nitrogen oxides are also major components of acid rain
Gases consisting of one molecule of nitrogen and varying numbers of oxygen atoms Nitrogen oxides are produced in the emissions of vehicle exhausts and from power stations In the atmosphere, nitrogen oxides can contribute to the formation of photochemical ozone (smog), which is a greenhouse gas
Gases formed in great part from atmospheric nitrogen and oxygen when combustion takes place under conditions of high temperature and pressure Nitrogen oxides include nitric oxide (NO) and nitrogen dioxide (NO2)
Precursor emission that forms from high-temperature combustion processes Reacts with volatile organic compounds in the presence of heat and sunlight to form ozone
A product of the combustion of fossil fuels for which production increases with the temperature of the combustion process Nitrogen Oxides can become an air pollutant if concentrations are excessive
A product of combustion of fossil fuels whose production increases with the temperature of the process It can become an air pollutant if concentrations are excessive
This is a general term for various compounds of nitrogen and oxygen NOx comes from combustion of gasoline diesel fuel, coal, and other substances NOx emitting sources include power plants, industries, trucks, and cars Nitrogen oxides are a necessary ingredient in ozone formation (See volatile organic compounds - VOCs)
Gases consisting of one molecule of nitrogen and varying numbers of oxygen molecules Nitrogen oxides are produced in the emissions of vehicle exhausts and from power stations In the atmosphere, nitrogen oxides can contribute to formation of photochemical ozone (smog), can impair visibility, and have health consequences; they are thus considered pollutants
A general term pertaining to compounds of nitric acid (NO), nitrogen dioxide (NO2 ), and other oxides of nitrogen Nitrogen oxides are typically created during combustion processes, and are major contributors to smog formation and acid deposition NO 2 is a criteria air pollutant, and may result in numerous adverse health effects; it absorbs blue light, resulting in a brownish-red cast to the atmosphere and reduced visibility
nitrogen and oxygen combine to form different varieties of this compound Each variety has a different number of oxygen atoms that have joined together with a nitrogen atom (The 'x' at the end of NOx can stand for 1, 2, 3 or more oxygen atoms That's why it's an 'x' and not a number ) When NOx is baked with VOCs in the hot summer sun, ground-level ozone is created (Back to Ozone Action! Days)
emissions, from man-made and natural sources, of nitric oxide (NO), with minor amounts of nitrogen dioxide (NO2) NOx are formed whenever fuel is burned at high temperatures in air, from nitrogen in the air as well as in the fuel Motor vehicles and stationary combustion sources (furnaces and boilers) are the primary man-made sources, although automotive emission controls are reducing the automobiles contribution Natural emissions of NOx arise from bacterial action in the soil NOx can react with hydrocarbons to produce smog See catalytic converter, emissions (automotive), hydrocarbon emissions
Consists of two gases nitric oxide (NO) and nitrogen dioxide (NO2) These gases are produced by bacterial action in the soil and by the high temperature combustion Both gases are components in the production of photochemical smog
Formed when nitrogen (N2) combines with oxygen (O2) in the burning of fossil fuels, from the natural degradation of vegetation, and from the use of chemical fertilizers A significant component of acid deposition and photochemical smog The primary source of nitrogen oxide emissions is automobile exhaust
- A metal-oxygen compound Most magnetic coatings are combinations of iron or other metal oxides, and the term has become a general one for the magnetic coating on tape or disk
An oxide is a compound of oxygen and another chemical element. a substance which is produced when a substance is combined with oxygen (oxygène + acide ). Any of a large and important class of chemical compounds in which oxygen is combined with another element. Metal oxides contain a metal cation and the oxide anion (O2^-); they typically react with water to form bases or with acids to form salts. Oxides of nonmetallic elements are volatile compounds in which a covalent bond joins the oxygen and the nonmetal; they react with water to form acids or with bases to form salts. A few substances (e.g., aluminum, zinc) form amphoteric oxides, which form salts with both acids and bases. Certain organic compounds form oxides in which the oxygen is covalently bonded to an atom of nitrogen (amine oxides), phosphorus (phosphine oxides), or sulfur (sulfoxides) in the organic molecule. calcium oxide deuterium oxide nitric oxide nitrous oxide oxide mineral
A chemical compound of oxygen with another element Hydrated (water-including) iron oxide is called rust; it does not cling tightly to the underlying metal, so the oxidation process is progressive and iron easily rusts away Aluminum oxide is a hard, transparent compound which clings tightly to the underlying metal and protects it against further oxidation
A casual term for silicon dioxide (otherwise known as glass) This material is used in semiconductor processing as an insulator and to cover and protect or "passivate" the device
An oxide is a molecule like K2O, Al2O3 They are the most basic form of matter that kiln temperatures can normally decompose materials into Thus for calculation purposes we view fired glazes and ceramic materials as made of oxides An oxide is a combination of oxygen and another element (designated "R"), there are only about 12-15 common oxides that we need to learn about Each has specific effects on a fired glass Glaze formulas compare relative oxide amounts Oxides are divided into three categories that recognize their functions There is a correlation between the amount of oxygen in each class and the contribution that class of oxide makes Fluxes are designated RO, intermediates R2O3 and glass formers RO2