All maps, graphics, flags, photos and original descriptions © 2020 worldatlas.com. The United States Environmental Protection Agency (EPA) offers a definition of point source pollution that describes it as any pollutant that infiltrates the environment from a place that can be pinpointed without difficulty. About 50000 Americans, 750000 Chinese, 13000 British people die due to air pollution. Mobile sources account for more than half of all the air pollution in the United States and the primary mobile source of air pollution is the automobile, according to the Environmental Protection Agency. Most human activity has the potential of unleashing pollution into the environment. They are as follows.
The health of humans, well being of other animals and the natural balance in the ecosystem everything is threatened by air pollution.
Thus, there is an immediate need to control air pollution and its life threatening impacts. For instance, by changing raw materials used in industry or the ingredient of fuel from conventional to non-conventional sources of energy; by maintenance of vehicles and roads and efficient transport system; by reduction in garbage burning and shifting cultivation areas; afforestation, etc. These oxides rust iron, damage building stone, decompose nylon, tarnish silver and kill plants. Nitrogen oxides also react with oxygen in the air to form nitrogen dioxide, a foul-smelling brown gas. The fumes or vapours released by these products are threatening for humans and has the ability to initiate many types of ailments such as heart, lung disease etc. Any combustion sources inside is a potential sources of indoor air pollution. There are numerous types of nonpoint sources, like line, area, or volume sources, to name a few. Air pollution control is an onerous task as there are large number of pollutants involved in air pollution. Smoke produced creates air pollution along with release of carbon dioxide which is a prominent greenhouse gas and causes air pollution.
We can prevent pollutants of air from being produced by various ways. Disclaimer 9. Major pollutants include particulate matter, ozone, sulfur dioxides, and nitrogen dioxide. TOS 7. Chlorofluorocarbons − Scientists are now alarmed regarding the increased concentration of chemical substances together called chlorofluorocarbon in the atmosphere. The massive combustion produces tons of ash, soot and other particulates responsible for the grey smog of cities like New York and Chicago, along with enormous quantities of sulphur oxides.
The Causes And Effects Of Melting Glaciers. Air pollution is defined as the introduction of pollutants, organic molecules, or other unsafe materials into Earth’s atmosphere. Effects of air pollution in points. Point sources of pollution are the same as point sources found in other scientific disciplines such as chemistry, physics, or engineering. Content Guidelines 2. It is well said that prevention is better than cure. For that reason, research is now underway to assess the long-term effects of chronic exposure to low levels of air pollution—experiences of people to determine how air pollutants interact with one another in the body with physical factors such as nutrition, stress, alcohol, cigarette smoking and common medicines. It is much harder to identify and usually covers a much larger area. The name point source is derived from algebra, meaning something that can be estimated as a mathematical point to make analysis less complicated. The overall air pollution present in densely populated areas and cities is majorly due to fumes.
We can prevent pollutants of air from being produced by various ways. In the presence of sunlight, nitrogen oxides combine with hydrocarbons to form a secondary class of pollutants, the photochemical oxidants, among them ozone and the eye-stinging peroxyacetylnitrate (PAN). As opposed to point source pollution, nonpoint source pollution happens as a result of many different sources at the same time.
What are the Main Sources of Air Pollution?
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The Economy today is petroleum based. Prohibited Content 3.
Automobiles − To meet the demands of exploding human population, the number of automobiles is increasing at a great space.