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Air pollution can be defined as impureness of the air. Air pollution is all around us. It might not be as clearly visible in some areas as others but the fact is that air pollution is still there affecting us in some way, shape, or form. It has been known to cause illness and/or death. Many people are not aware of this.
There are two main causes of air pollution. One of the main causes is natural pollution. "Natural pollution is windblown dust, pollen, fog, etc." The other main cause is people pollution. "People pollution is the chief concern and most serious form. Most of people pollution is caused by industry, cars, trucks, and airplanes."
The causes of air pollution go on and on. There are residential causes and industrial causes. Residential causes are those such as automobile emissions and forest fires. Industrial causes are those such as factory emissions and the burning of fossil fuels.
One residential cause is the emissions of automobiles. This is probably the most harmful cause, at least in the United States of America it is. People drive automobiles every day to get from point A to point B. If automobiles did not exist, the air would most likely be cleaner but we would not be able to travel long distances in short periods. In any case, the problem remains that automobile emissions are harmful to the environment.
This is how they generate automobile emissions into the atmosphere.
Motor vehicle emissions are generated in several different ways and locations during engine/vehicle operation. The most important sources are, of course, those produced in combustion and vented through the exhaust pipe. These exhaust gases consist mainly of unburned HCs, CO, and NOx and account for approximately 90- 92% of all vehicle emissions. Some products of combustion are not vented through the exhaust system, as they slip by the piston rings and the cylinder walls. These "blowby" gases consist mainly of unburned HCs that accumulate in the crankcase exhaust port. A third source of emissions is the votalization of HCs through the carburetor and fuel tank vents. Carburetor emissions are pronounced during the "hot soak" period immediately following vehicle operation.
Forest fires caused by the carelessness of humans puts harmful smoke into the environment. These forest fires do not happen often, but when they do, there is mass destruction caused to the atmosphere. In the early 1950's, forest fires in the Southeastern United States covered huge areas of the country with smoke so thick that flights were canceled in New York City.
Chlorofluorocarbons or CFC's were developed by chemists at General Motors in 1928.
When they were developed, they were looked upon as "miracle" gases that could be safely used for many purposes. They were not toxic. They were not carcinogens. They did not corrode the materials with which they came in contact. Nor were they flammable. Finally they could be manufactured easily and inexpensively.
Over the years these CFC's have been made to serve many purposes from refrigerator coolants to jet streams in aerosol cans and polystyrene material to air conditioners. When people do not properly dispose of CFC's, they could escape into the atmosphere, creating a hole in the ozone layer.
Air pollution was first realized as a major problem during the Industrial Revolution in Europe. "Industrial pollution is particles (especially of metal dusts) and waste gases (especially carbon monoxide, sulfur oxides, and nitrogen oxides) that are waste products of industry and end up in the air. Industrial emissions are the second largest pollutants of the atmosphere after automotive exhausts."
Industries that are the major pollutants include petroleum refining, metal smelting, iron and steal mills, grain mills, and the flour handling industry. The most common chemical natured factory pollutant is methylene chloride.
The burning of fossil fuels is a major cause of air p
Terminology mentioned in this term paper
acid rain, respiratory systems, Clean Air Act, natural gas, car exhaust, industrial chemicals, chemical reactions, federal law, Sneezing,
Names included in this term paper
F. Sherwood Rowland, Mario J. Malian,
Organizations mentioned in this essay
Pollution Prevention Strategy, EPA, Federal Environmental Protection Agency,
Locations included in this research paper
United States of America, Europe, CO, Los Angeles, New York City,
Health Conditions included in this essay
skin cancer, cancer, allergic reactions, lung cancer, headaches, asthma, cataracts, emphysema, rashes, chronic bronchitis, nausea,
Companies included in this research paper
Keywords mentioned in this research paper
air pollution, acid rain, ozone layer, fossil fuels, pollutants, air quality, forest fires, living organisms, smog, gases, nuclear power, United States, respiratory system, harmful, Industrial pollution, Pollution Prevention, pollution control, another way, sulfuric acid, Clean Air Act, air conditioners, power plants, chemicals, solar power, vehicle emissions, sulfur dioxide, carbon dioxide, a hole, nuclear plants, carbon monoxide, nitric acid, allergic reactions, industrial chemicals, smoke, nuclear power plants, automobile, solar power plants, federal law, Ozone depletion, residential, materials, upper respiratory tract, exhaust pipe, Northeastern United States, polar ice caps, exhaust system, Southeastern United States, scrubbers, nuclear fallout, New York City,