air pollution

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air pol·lu·tion

contamination of air by smoke and harmful gases, mainly oxides of carbon, sulfur, and nitrogen, as from automobile exhausts, industrial emissions, or burning rubbish.
See also: smog.

air pollution

Etymology: L, polluere, to defile
contamination of the air by noxious fumes, aromas, or toxic chemicals.

air pollution

The presence in the air of substances suh as carbon monoxide (CO), NO2, ozone, particulate matter, and SO2, which are byproducts of human activities, and which have an adverse effect on health. Fine (diameter ≤2.5 µm) particles are derived primarily from the combustion of fossil fuels in transportation, manufacturing, and power generation, and are mixed with soot, acid condensates, nitrate and sulfate particles, and may pose a greater risk to health as they are generally more toxic and can be inhaled deeply into the lungs; there is a significant association between fine particulate air pollution and deaths from cardiopulmonary disease, lung cancer, and other causes.
Health effects of air pollution Respiratory complaints, restricted activity, chest discomfort, sore throats, eye irritation; CO and ozone are linked to heart malformations and heart valve defects.

air pol·lu·tion

(ār pŏ-lū'shŭn)
Contamination of air by smoke, particulate matter, and harmful gases, mainly oxides of carbon, sulfur, and nitrogen, as from automobile exhausts, industrial emissions, and burning rubbish.
See also: smog

air pollution

the presence of contaminants in the form of dust, fumes, gases or other chemicals in the atmosphere in quantities which adversely affect living organisms. See ACID RAIN.


the gaseous mixture that makes up the atmosphere. See also air sacs.

air capillaries
the minuscule vessels that connect the parabronchi in avian lungs, in which there are no blind-ended tubules.
air cell
the air-filled space between the internal and external shell membranes of a bird's egg.
air changes per hour
the standard measurements used to indicate the level of ventilation in a building especially with respect to removal of humidity, noxious gases and carbon dioxide.
air dried
said of feed that is dried in the open with only natural movement of air, e.g. conventional hay. Contains about 10% water.
air filtration
used as a means of reducing contamination inside a building, the efficiency depending on the pore size of the filter. A technique of some value when combined with temperature control in reducing the prevalence of pneumonia in calves in intensive veal producing units.
air flow rates
are important in assessing the suitability of a ventilating system in animal accommodation. Standards for suitable flow rates for different species and age groups for heating and cooling are available.
air gap technique
in radiography, a technique to reduce scatter of radiation by increasing the distance between the patient and the surface of the cassette.
air hunger
a distressing dyspnea affecting both inspiration and expiration which occurs in paroxysms; characteristic of diabetic acidosis and coma. Called also Kussmaul's respiration.
air movement
includes air changes voiding humidity and gases to the exterior plus movements within the space which facilitate cooling.
air passages
the combined air delivery system of the upper and lower respiratory tracts including nasal cavities, pharynx, laryngeal cavity, trachea, bronchi and bronchioles.
air pollution
contamination of the air with deleterious or esthetically unattractive chemical, physical or biological material. Usually reserved for pollutants generated by humans.
air pump
a small electrically driven appliance used to provide a constant stream of air bubbles to aquaria. The bubbles themselves add little oxygen to the water but the constant disturbance of the surface of the water does.
air quality
the determination of air flow rate, temperature, humidity, freedom from bacteria, solid particles, obnoxious effluvia and poisonous gases—especially hydrogen sulfide and methane from sullage pits under the animal accommodation.
air trapping
dilatation of alveoli without destruction of their walls.
air vesicles
extend radially from parabronchi in the lungs of birds and connect with air capillaries, in which gaseous exchange occurs with vascular capillaries.

Patient discussion about air pollution

Q. where would i find list of all the "clean" cities and the rates of air pollution ...?

A. i don't know about a list of "good" cities, but i know a list of the worse cities for Asthmatic people!-

More discussions about air pollution
References in periodicals archive ?
Per Christiansen, president of NFT, said "this is a big step forward in establishing Nalco Fuel Tech in Taiwan and in the very important air pollution control market in South East Asia.
We have to be able to document it's a public nuisance,'' said Paxson, air pollution control officer.
NYSE: WTI), is a world leader in the development, design and supply of air pollution control equipment and systems.
designs, manufactures, and markets proprietary air pollution control systems and components.
The Antelope Valley Air Pollution Control District, which covers the Los Angeles County portion of the Antelope Valley, and the East Kern Air Pollution Control District will receive the funding under a state program aimed at cutting ozone pollutants.
The subsidiaries of Research-Cottrell -- Air Pollution Control Division, Custodis, Custodis-Ecodyne, Flex-Kleen, KVB/Analect, R-C Environmental Services, R-C Europe, and REECO -- provide the expertise, technology, and services to comprehensively solve any air or thermal pollution problem.
Now that Stage 1 episodes are nonexistent in the Antelope Valley, the AVAPCD is focused on continuing to partner with local industry and the public to make smog a thing of the past,'' said Chuck Fryxell, Air Pollution Control Officer for the district, said in an announcement.
Deane Sensenbaugh Award for its contribution to the advancement of air pollution control technology.
In the case of our alliance partner, we fully anticipate additional air pollution control orders in the near future, while the design engineering releases should result in equipment purchases later this year.
The EPA decision was welcomed by the Kern County Air Pollution Control District, which covers the eastern Kern County area.
The subsidiaries of Research-Cottrell -- Air Pollution Control Division, Custodis, Ecodyne Cooling Tower Services, Flex-Kleen, KVB/Analect, R-C Environmental Services & Technologies, R-C Europe, and REECO -- provide the expertise, technology, and services to comprehensively solve any air or thermal pollution problem.

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