air pollution

(redirected from Air Pollutants)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
Related to Air Pollutants: hazardous air pollutants

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.

air

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!-
http://www.webmd.com/asthma/news/20050215/americas-worst-asthma-cities

More discussions about air pollution
References in periodicals archive ?
Perinatal air pollutant exposures and autism spectrum disprders in the children of Nurses' Health Study II participants.
If a small amount of the air pollutant of interest is absorbed, it is reasonable assumption that [C.
CCCEH noted that the study is part of a broader multi-year research project begun in 1998 examining the health effects of exposure of pregnant women and babies to indoor and outdoor air pollutants, pesticides and allergens.
State regulators have declared secondhand smoke a toxic air pollutant.
With the efficient use of energy; natural resources; and natural materials, unwanted air pollutants are kept to a minimum.
Research studies have shown that air pollutants worsen symptoms of asthma.
EPA studies of human exposure to air pollutants indicate that indoor air levels of many pollutants may be 2-5 times, and occasionally, more than 100 times higher than outdoor levels.
A previous study suggested one in 50 heart attacks in local London hospitals are triggered by air pollutants.
The California Air Resources Board (ARB) and the South Coast Air Quality Management District (SCAQMD) have found that exposure to some air pollutants and toxic compounds may be 10 times higher inside vehicles than in ambient air.
To satisfy EPA, the states must require all major emissions sources (defined as ones likely to emit more than 10 tons per year of hazardous air pollutants - including styrene) to document their emissions and obtain state operating permits (see PT, Feb.
In their study, economists Maureen Cropper of the University of Maryland and George Van Houtven of East Carolina University examined regulations under three environmental laws: the asbestos ban under the Toxic Substances Control Act; pesticides regulated by the Federal Insecticide, Fungicide and Rodenticide Act from 1975 to 1989; and air pollutants governed by the Clean Air Act from 1975 to 1990.
In addition to VOCs, many traditional rubber-to-metal bonding agents contain materials, such as lead compounds, that are considered hazardous air pollutants (HAPs) under Title III of the CAAA.