air pollution

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Related to Air toxic: 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 ?
Air toxics and leukemia indicators have been developed at the county level for the purpose of tracking leukemia incidence rates, emissions of three air toxics associated with leukemia--benzene; 1,3 butadiene; and ethylene oxide--and the relationships between them (Hughes, Meek, Walker & Beauchamp, 2003; Kirman et al.
Recommendations included clearly defining the key priorities of the Clean Air Act air toxics program to identify the most effective approaches for HAPs benefits analysis, focusing on susceptible and vulnerable populations, and improving dose-response estimation for quantification of benefits.
The researchers found a persistent relationship between increasing levels of racial/ethnic segregation and increased estimated cancer risk associated with ambient air toxics.
For example, the EPA could decide that regulating carbon dioxide emissions is more important than regulating mercury emissions, and withdraw its mercury air toxics rule for some (or all) power plants, thereby potentially opening the door to section 111(d) regulation for those sources.
emissions data and cancer risk estimates for air toxics.
As CLFs Jonathan Peress said in a press statement, the EPAs recent Mercury and Air Toxics Standards (MATS) "amount to one of the most significant public health and environmental measures in years.
Environmental Protection Agency (EPA) is finally poised to adopt a power plant air toxics rule that will mainly target mercury, fine particulates (which contain heavy metals), and acid gases.
Earlier this year the EPA proposed new "Mercury and Air Toxics Standards" regulating mercury emissions from utilities across the country, with the goal of reducing the amount of mercury emitted by coal burning by 91 percent by 2016.
Environmental Protection Agency (EPA) air toxics rule for industrial boilers and incinerators and replace it several years from now with a less-stringent standard.
Study after study show that to protect public health, we need to significantly lower the amount of soot, smog, and air toxics, which include mercury, lead, arsenic and dioxin.
Environmental Protection Agency's (EPA) National-Scale Air Toxics Assessment (NATA), released 11 March 2011 are sobering.
The air toxics of most concern continued to improve.

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