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Topic: Nitrogen dioxide

Related Topics

Nitrogen oxide

Sulphur dioxide

Nitrogen tetroxide

Dinitrogen pentoxide

Dinitrogen tetroxide

Dinitrogen trioxide

Nitrogen monoxide

Dinitrogen oxide

Nitric oxide

Nitric acid

Nitrous oxide

Sulfur dioxide

Nitrogen

Ostwald process

Vinyl chloride

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	Nitrogen - Wikipedia, the free encyclopedia
		Nitrogen is the chemical element in the periodic table that has the symbol N and atomic number 7.
		Nitrogen is the largest single component of the Earth's atmosphere (78.084% by volume, 75.5% by weight) and is acquired for industrial purposes by the fractional distillation of liquid air or by mechanical means of gaseous air (i.e.
		Nitrogen is a large component of animal waste (for example, guano), usually in the form of urea, uric acid, and compounds of these nitrogenous products.
	en.wikipedia.org /wiki/Nitrogen (1432 words)

	Nitrogen dioxide - Wikipedia, the free encyclopedia
		The chemical compound nitrogen dioxide (NO) is a reddish or orange/brown gas with a characteristic sharp, biting odor.
		Nitrogen dioxide exists in equilibrium with its dimer, dinitrogen tetroxide.
		Nitrogen dioxide plays a role in atmospheric chemistry, including the formation of tropospheric ozone.
	en.wikipedia.org /wiki/Nitrogen_dioxide (628 words)

	Nitrogen Dioxide
		Nitrogen dioxide is a strong oxidizing agent that reacts in the air to form corrosive nitric acid, as well as toxic organic nitrates.
		Since nitrogen dioxide is a traffic-related pollutant, emissions are generally highest in urban rather than rural areas.
		Annual mean concentrations of nitrogen dioxide in urban areas are generally in the range 10-45 ppb, and lower in rural areas.
	www.ace.mmu.ac.uk /eae/Air_Quality/Older/Nitrogen_Dioxide.html (213 words)

	ATSDR - ToxFAQs™: Nitrogen Oxides
		Nitrogen oxides are a mixture of gases that are composed of nitrogen and oxygen.
		The reaction of nitrogen dioxide with chemicals produced by sunlight leads to the formation of nitric acid, which is a major constituent of acid rain.
		Nitrogen dioxide also reacts with sunlight, which leads to the formation of ozone and smog conditions in the air we breathe.
	www.atsdr.cdc.gov /tfacts175.html (1109 words)

	Nitrogen dioxide [Ministry for the Environment]
		Nitrogen dioxide is toxic to plants in short-term concentrations of 120 µg/m3.
		Nitrogen dioxide forms acids in the presence of moisture and these can be corrosive to building materials at high concentrations.
		Nitrogen dioxide can be both a localised problem around congested roads and also an urban-wide problem from a variety of combustion sources.
	www.mfe.govt.nz /issues/air/breathe/nitrogen-dioxide.html (444 words)

	Nitrogen Dioxide (Site not responding. Last check: 2007-10-21)
		Nitrogen Dioxide is a reddish-brown gasmade of nitrogen and oxygen.
		Nitrogen dioxide can directly affect a human’s health by causing acute bronchitis or pneumonia and by causing a lowered resistance to respiratory infections.
		Nitrogen dioxide is a reddish-brown gas thought to contribute to a significant proportion of the brownish coloration often observed in polluted air in colder months.
	www.mde.state.md.us /Air/air_information/dioxide.asp (235 words)

	ATSDR - MMG: Nitrogen Oxides
		Nitrogen dioxide is a colorless to brown liquid at room temperature and a reddish-brown gas above 70ºF poorly soluble in water.
		In addition, they may be exposed to higher levels of nitrogen dioxide than adults in the same location because of their short stature and the higher levels of nitrogen dioxide found nearer to the ground.
		Nitrogen dioxide is a corrosive substance that forms nitric and nitrous acids upon contact with water; it is more acutely toxic than nitric oxide, except at lethal concentrations when nitric oxide may kill more rapidly.Nitric oxide is a potent and rapid inducer of methemoglobinemia.
	www.atsdr.cdc.gov /MHMI/mmg175.html (5012 words)

	BEAM Nitrogen Dioxide Fact Sheet, Maine Department of Environmental Protection
		Nitrogen oxides and sulfur dioxide react with other substances in the air to form acid rain, which is associated with the acidification of soils, lakes, and streams, accelerated corrosion of buildings and monuments, and reduced visibility.
		Nitrogen dioxide also is a major source of fine particulate pollution, which is a significant health concern as well as a pollutant that impairs visibility.
		The effects of short-term exposure to nitrogen dioxide are still unclear, but continued or frequent exposure to concentration higher than those normally found in the ambient air may cause increased incidence of acute respiratory illness in children.
	www.state.me.us /dep/air/beam/factsheets/nitrogendioxide_fs.htm (542 words)

	Environmental Protection Agency -- Nitrogen Dioxide (NO2) (Site not responding. Last check: 2007-10-21)
		A suffocating, brownish gas, nitrogen dioxide is a strong oxidizing agent that reacts in the air to form corrosive nitric acid, as well as toxic organic nitrates.
		Nitrogen oxides in the air can significantly contribute to a number of environmental effects such as acid rain and eutrophication in coastal waters like the Chesapeake Bay.
		Eutrophication occurs when a body of water suffers an increase in nutrients that leads to a reduction in the amount of oxygen in the water, producing an environment that is destructive to fish and other animal life.
	www.epa.gov /oar/aqtrnd95/no2.html (371 words)

	HHMI Lab Safety: LCSS: NITROGEN DIOXIDE (Site not responding. Last check: 2007-10-21)
		Nitrogen dioxide at concentrations of 10 to 20 ppm is mildly irritating to the eyes; higher concentrations of the gas and liquid NO are highly corrosive to the skin, eyes, and mucous membranes.
		Nitrogen dioxide can be detected below the permissible exposure limit by its odor and irritant effects and is regarded as a substance with adequate warning properties.
		Excess nitrogen dioxide and waste material containing this substance should be placed in an appropriate container, clearly labeled, and handled according to your institution's waste disposal guidelines.
	www.hhmi.org /about/labsafe/lcss/lcss63.html (680 words)

	HSE - Publications - CHEMICAL HAZARD ALERT NOTICE 29 - NITR...
		Nitrogen dioxide is a red/brown gas with an irritating odour.
		Nitrogen dioxide is formed in combustion processes for example, from motor vehicles using petrol and diesel fuels.
		Nitrogen dioxide is used in the manufacture of nitric acid and ammonium nitrate fertilisers.
	www.hse.gov.uk /pubns/chan29.htm (885 words)

	Nitrogen Cycle (Site not responding. Last check: 2007-10-21)
		Nitrogen will only react with oxygen in the presence of high temperatures and pressures found near lightning bolts and in combustion reactions in power plants or internal combustion engines.
		Nitrogen in the air becomes a part of biological matter mostly through the actions of bacteria and algae in a process known as nitrogen fixation.
		Nitrogen and hydrogen are reacted under great pressure and temperature in the presence of a catalyst to make ammonia.
	www.elmhurst.edu /~chm/onlcourse/chm110/outlines/nitrogencycle.html (345 words)

	NITROGEN OXIDES (NOx)
		Nitrogen oxides (NOx) consist of nitric oxide (NO), nitrogen dioxide (NO2) and nitrous oxide (N2O) and are formed when nitrogen (N2) combines with oxygen (O2).
		Nitrogen dioxide is a reddish-brown gas with a pungent, irritating odour.
		As one of the components of smog, nitrogen dioxide is known to irritate the lungs and increase susceptibility to respiratory infections.
	dwb.unl.edu /Teacher/NSF/C09/C09Links/www.casahome.org/nitrogen.htm (880 words)

	Nitrogen Oxide
		In its pure state, nitrogen dioxide is a reddish-orange brown gas with a characteristic pungent odor.
		Nitrogen dioxide comprises about 10% of the oxides of nitrogen (NOx) that are formed when nitrogen in the air combines with oxygen during high temperature combustion.
		Nitrogen Dioxide was monitored at two sites in Maine during 2000 using continuous monitoring equipment.
	www.maine.gov /dep/air/monitoring/nitrogenoxide.htm (288 words)

	MPCA - Criteria Air Pollutant: Nitrogen Dioxide (NO₂)
		Nitrogen gas is an essential element to plant metabolism and is harmless to humans.
		Nitrogen oxides are an important precursor to both ozone and acid rain, and may affect both terrestrial and aquatic ecosystems.
		Nitrogen dioxide is a colored gas, yellowish-orange at low temperatures and reddish-brown at relatively high concentrations.
	www.pca.state.mn.us /air/emissions/no2.html (730 words)

	YourAir, air quality forecasts for your street (Site not responding. Last check: 2007-10-21)
		Nitrogen Dioxide is a brown gas that can irritate your nose, throat, lungs, skin and eyes.
		Nitrogen dioxide has the chemical symbol NO2, as it comprises one nitrogen atom and two oxygen atoms.
		Natural background levels of nitrogen dioxide are about 1-2 microgrammes per cubic meter, but near polluted roads in London it can reach 800 microgrammes per cubic meter.
	www.cerc.co.uk /YourAir/index.asp?whichMap=NO2Conc&whichDay=Today&whichPic= (197 words)

	nitrogen oxide - Hutchinson encyclopedia article about nitrogen oxide (Site not responding. Last check: 2007-10-21)
		Nitrogen monoxide and nitrogen dioxide contribute to air pollution.
		On contact with air it is oxidized to nitrogen dioxide.
		Nitrogen monoxide was discovered during the 1980s to act as a chemical messenger in small quantities within the human body, despite being toxic at higher concentrations and its rapid reaction with oxygen.
	encyclopedia.farlex.com /nitrogen+oxide (313 words)

	Nitrogen, oxides of (EHC 4, 1977)
		Exposure to nitrogen dioxide increased the susceptibility of experimental animals to both bacterial and viral respiratory infections; this response was clearly dose-related.
		Nitrogen dioxide interferes with the lung's ability to remove inhaled deposited particles efficiently by altering the phagocytic, enzymatic, and functional processes of the alveolar macrophages and of the ciliated epithelial cells.
		For example, a study to evaluate the effects of nitrogen dioxide on the incidence of acute respiratory disease in children and their parents living near a large point source of this pollutant demonstrated an excess rate of respiratory illness in comparison with a control group.
	www.inchem.org /documents/ehc/ehc/ehc004.htm (15584 words)

	[No title]
		Nitrogen dioxide is the most abundant in the atmosphere, and represents the greatest risk to human health.
		Nitrogen dioxide is considered an important outdoor pollutant not only because of potential health effects, but because it is an essential precursor in the formation of tropospheric ozone via photochemical reactions, and contributes to the formation of atmospheric acids and secondary particles.
		Nitrogen dioxide is less reactive than ozone, and is relatively insoluble; therefore, removal of inhaled NO2 in the upper airway is limited.
	www.arb.ca.gov /ch/ceh/001207/no2.doc (7539 words)

	NITROGEN DIOXIDE
		Nitrogen dioxide is produced both directly as a primary and indirectly as a secondary pollutant. In the UK, some 50% of the atmospheric nitrogen dioxide is produced by motor vehicles and 25% by power stations.
		Although it is mainly a secondary air pollutant, nitrogen dioxide is rapidly formed close to sources of nitric oxide.
		Concentrations of nitrogen dioxide in urban areas show a distinct diurnal variation with peak levels typically being recorded during the morning and evening rush hours.
	www.basildon.gov.uk /80256B7A003BE9EE/vWeb/pcAPSY5THFB2 (282 words)

	Nitrogen Dioxide Emissions and Exceedances
		However, man-made sources are of greater importance in the occurrence of nitrogen dioxide and ozone air pollution because they are concentrated in populated areas.
		In the atmosphere, nitric oxide is oxidized to nitrogen dioxide at a rate dependent on the ambient concentrations of nitric oxide and ozone.
		Nitrogen oxides, as a precursor to ozone, is receiving increasing attention by regulators and policy makers in efforts to curtail the formation of ozone.
	www.pepps.fsu.edu /safe/environ/aq2.html (858 words)

	WDNR - Nitrogen oxides sources and health effects
		Nitrogen dioxide exposure lowers the resistance of animals to such diseases as pneumonia and influenza.
		The human health effects of exposure to nitrogen oxides, such as nitrogen dioxide, are similar to those of ozone.
		Oxides of nitrogen, in the presence of sunlight, can also react with hydrocarbons, forming photochemical oxidants, as discussed in the section on ozone.
	www.dnr.state.wi.us /org/aw/air/health/oxides.htm (311 words)

	History of ChEn: Nitrogen
		Because of this bond, nitrogen gas simply does not participate in any reactions at room temperature (or even at the higher temperatures found in small fires), and is therefore described as inert.
		Nitrogen Oxide (NO) A colorless bi-product formed in internal combustion engines where high temperatures and pressures are capable of combining the nitrogen and oxygen gases found in the air.
		Nitrogen Dioxide (NO) Otherwise known as smog, this brown gas comes about as nitrogen oxide is spontaneously oxidized in the atmosphere.
	www.pafko.com /history/h_s_n2.html (1055 words)

	ESA - Observing the Earth - Global air pollution map produced by Envisat's SCIAMACHY
		Nitrogen dioxide (NO) is a mainly man-made gas, excess exposure to which causes lung damage and respiratory problems.
		Nitrogen dioxide maps like that shown here have been produced using nadir-sounding data: while NO vary widely across the troposphere they are evenly spread across the upper atmosphere, the stratosphere.
		So nitrogen dioxide levels measured above the remotest parts of the Pacific were used to determine a general column for stratospheric nitrogen dioxide, which could be subtracted from the global data to determine tropospheric vertical column values.
	www.esa.int /export/esaEO/SEM340NKPZD_index_0.html (1044 words)

	Nitrogen dioxide (from environmental works) -- Encyclopædia Britannica
		Nitrogen dioxide also reacts in the atmosphere to form nitric acid, contributing to the problem of acid rain.
		Nitrogen, a major constituent of air, is quite inert and passes into the fluids and tissues of the body without undergoing chemical change.
		During breathing nitrogen is exhaled from the lungs chemically unchanged.
	www.britannica.com /eb/article-214277 (887 words)

	ESA Portal - Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality
		Nitrogen dioxide (NO) is associated with nitrogen oxide (NO) in the atmosphere and the sum of the two is called NO This is released into the troposphere from power plants, heavy industry and road transport, along with biomass burning, lightning in the atmosphere and microbial activity in the soil.
		Exposure to nitrogen dioxide in large quantities is known to cause lung damage and respiratory problems, although little is known about the consequences of long term exposure to elevated atmospheric amounts.
		The increase in nitrogen dioxide levels seen is an unfortunate side effect of economic success.
	www.esa.int /esaCP/SEMEE6A5QCE_index_0.html (1310 words)

	Air Quality: Sulfur Dioxide, Nitrogen Oxides, and Acid Rain
		Sulfur dioxide and nitrogen oxides are gases released when fossil fuels are burned.
		Moreover, at high levels, nitrogen oxides are known to cause lung damage and other respiratory illness, particularly in children and people suffering from asthma.
		Sulfur dioxide is emitted chiefly from industrial sources such as power plants using sulfur-containing fuel, metallic-ore smelting facilities, wood and paper industrial processors, and oil and gas refineries.
	www.texasep.org /html/air/air_2std_nox.html (847 words)

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