A mixture of pollutants, principally ground-level ozone, produced by chemical reactions in the air. A major portion of smog-formers comes from burning petroleum-based fuels such as gasoline, but also include volatile organic compounds that are found in products such as paints and solvents. Smog can ...
Unwanted chemicals or other materials found in the air, water, and/or ground. Pollutants can harm health, the environment and property. Many air pollutants occur as gases or vapors, but some are very tiny solid particles: dust, smoke, or soot.
Nitrogen oxides are produced from burning fuels, including gasoline and coal. They react with volatile organic compounds to form smog, and become air pollutants included in acid rain.
Toxic chemicals that cause serious health and environmental effects. Health effects include cancer, birth defects, nervous system problems, and death due to massive accidental releases. Hazardous air pollutants are released by sources such as chemical plants, dry cleaners, printing plants, and ...
Machines which measure, on a continuous basis, pollutants released by a source. The 1990 Clean Air Act requires continuous emission monitoring systems for certain large sources.
Another word for burning. Many important pollutants, such as sulfur dioxide, nitrogen oxides, and particulates (PM-10) are combustion products, often products of the burning of fuels such as coal, oil, gas, and wood.
The original Clean Air Act was passed in 1963, but our national air pollution control program is actually based on the 1970 update. The 1990 Clean Air Act Amendments are the most far-reaching revisions of the 1970 law, which is also the 1990 Clean Air Act.
These chemicals and some related chemicals have been used in great quantities in industry, for refrigeration and air conditioning, and in consumer products. When CFCs are released into the air, they rise into the stratosphere, a layer of the atmosphere high above the Earth, where they take part in ...
