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APESCH16
| Term | Definition |
|---|---|
| Acid Precipitation | acidic rain, snow, or dry particles deposited from the air due to increased acids released by anthropogenic or natural resources |
| Aerosol | minute particles or liquid droplets suspended in the air |
| Aesthetic Degradation | changes in environmental quality that offend our aesthetic senses |
| Ambient Air | the air immediately around us |
| Bronchitis | a persistent inflammation of bronchi and bronchioles (large and small airways in the lungs) |
| Carbon Monoxide | colorless, odorless, noniritating but highly toxic gas produced by incomplete combustion of fuel, incineration of biomass or solid waste, or partially anaerobic decomposition of organic material |
| Chloroflourocarbons (CFC's) | chemical compounds with a carbon skeleton and one or more attached chlorine and fluorine atoms. Commonly used as refrigerants, solvents, fire retardants, and blowing agents |
| Chronic Obstructive Lung Disease | irreversible damage to the linings of the lungs caused by irritants |
| Criteria (Conventional) pollutants | the seven major pollutants (sulfur oxide, carbon monoxide, particulates, hydrocarbons, nitrogen oxides, photochemical oxidants, and lead) identified and regulated by the US Clean Air Act |
| Fugitive Emissions | substances that enter the air without going through a smokestack, such as dust from soil erosion, strip mining, rock crushing, construction, and building demolition |
| Hazardous Air Pollutants (HAPs) | especially dangerous air pollutants including carcinogens, neurotoxins, mutagens, teratogens, endocrine system disrupters and other highly toxic compounds |
| Nitrogen Oxides | highly reactive gases formed when nitrogen in fuel or combustion air is heated to over 650 C in the presence of oxygen or when bacteria in soil or water oxidize nitrogen-containing compounds |
| Particulate Matter | atmospheric aerosols, such as dust, ash, sot, ling, smoke, pollen, spores, algal cells, and other suspended materials; originally applied only to solid particles but now extended to droplets of liquid |
| Photochemical Oxidants | products of secondary atmospheric reactions (smog) |
| Primary Pollutants | chemicals released directly into the air in a harmful form |
| Secondary Pollutants | chemicals modified to a hazardous form after entering the air or that are formed by chemical reactions as components of the air mix and interact |
| Stratospheric Ozone | the ozone occurring in the stratosphere 10 to 50 km above the earth's surface |
| Sulfur Dioxide | a colorless, corrosive gas directly damaging to both plants and animals |
| Synergistic Effects | when an injury caused by exposure to two environmental factors together is greater than the sum of exposure to each factor individually |
| Temperature Inversions | a stable layer of warm air overlays cooler air, trapping pollutants near ground level |
| Toxic Release Inventory (TRI) | a program created by the Superfund Amendments and Reauthorization Act of 1984 that requires manufacturing facilities and waste handling and disposal sites to report annually on releases of more than 300 toxic materials |
| Volatile Organic Compounds (VOCs) | organic chemicals that evaporate readily and exist as gases in the air |
Created by:
AlanaR
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