О3
WORDS TO KNOW
The ozone layer in the stratosphere protects life on Earth from the harmful ultraviolet rays of the sun. Atmospheric ozone is affected by temperature, winds, airborne chemicals, and other climatic factors. These factors are also affected by ozone. This interdependence between ozone and climatic factors has been a subject of debate since the 1970s and even more hotly debated since an ozone hole was found over Antarctica. Ozone depletion is thought to be a slow but steady decrease of ozone within the stratosphere and a faster and much larger increase in the size of the ozone holes over the North and South Poles during winters and early springs. These two events are thought to be caused by ozone-depleting substances, such as bromofluorocarbon compounds (halons) and chlorofluorocarbon (CFC) compounds, which are artificially produced by humans. Such ozone-depleting chemicals, as formerly found in many aerosol cans in the United States, have been banned (under the Montreal Protocol) or phased out by many industrial countries around the world. Consequently, scientists are hopeful that the ozone layer in the stratosphere may recover sometime in the later half of the twenty-first century. In the meantime, less ozone in the atmosphere results in cooler temperatures. Scientific studies have generally found that the stratosphere has cooled by several degrees over the past decades. Concurrently, scientists have discovered that greenhouse gases are increasing in the troposphere. Based on experiments, a relationship has been formed between the increased concentrations in greenhouse gases within the atmosphere and the steady depletion of ozone. Ozone depletion gets worse when the stratosphere (where the ozone layer is) becomes colder. Because global warming traps heat in the troposphere (the atmospheric layer below the stratosphere), less heat will reach the stratosphere, which will make it colder.
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Лучший против множества раздражающих химикатов
Фильтры воздуха медицинского класса, признанные во всем мире
Most of the oxygen in Earth’s atmosphere exists as O2, with ozone only adding a minute fraction. Ozone occurs most often in the upper atmosphere, the stratosphere, where it absorbs all of ultraviolet-C (UV-C) radiation from the sun, almost all of ultraviolet-B (UV-B), but very little of ultraviolet-A (UV-A). It occurs to a much lesser degree in the lower troposphere. UV-B radiation is potentially dangerous to living things and the environment. When increasing amounts of UV-B reach Earth’s surface, the deoxyribonucleic acid (DNA) of humans can be damaged. UV-A is used by humans in very small dosages to synthesize vitamin-D. However, too much UV-A can cause health problems with the immune system and the eyes (in the form of cataracts). UV radiation, in general, can cause various forms of cancer.
Andersen, Stephen O. Protecting the Ozone Layer: The United Nations History. Sterling, VA: Earthscan, 2004. Keeling, R. F., ed. The Atmosphere. Boston: Elsevier, 2006. Parker, Larry. Stratospheric Ozone Depletion. New York: Novinka Books, 2003.
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Умные очистители воздуха с фильтрацией HyperHEPA для больших помещений, личных пространств и автомобилей
“Ozone: Good Up High, Bad Nearby.” U.S. Environmental Protection Agency. (accessed October 30, 2007).
Ozone is one of the three allotropes (forms of a chemical element with different physical and chemical properties) of the element oxygen (O). The chemical symbol for ozone is O3, which means it has three atoms in each molecule. Ozone is normally invisible, but in high concentrations it can appear pale blue in color. When it is a liquid, it is colored deep blue; as a solid it is darkish purple. Under normal temperatures and pressures, ozone is a poisonous gas. It is dangerous in small doses and deadly in large amounts. It also has a strong odor, which is why the Greek word from which it is derived—ozein—means “to smell.” People sometimes smell ozone during a rainstorm or when they are near an electrical outlet. Ozone easily reacts chemically with various substances, so it is frequently used as an oxidizing agent to bleach food products, sterilize air, and purify liquids such as water.
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BIBLIOGRAPHY
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Источники:
https://fb.ru/article/193500/ozon-himicheskiy-element-svoystva-formula-oboznachenie&rut=63548e8ab7ea078bcaafd08041761ac7e2c2a2ba2ac918064bec0e89e894ebc6
https://www.greenfacts.org/en/ozone-o3/l-3/1-presentation.htm&rut=1f2ecb1b8120bf362132526fd266d7203cac5b644691ccf762db998089e0c812
https://www.encyclopedia.com/environment/energy-government-and-defense-magazines/ozone-o3&rut=601873847e9dcf8740b593b220fd860f1fd65feb06b674d709df99e5e43948d1
https://ru.wikipedia.org/wiki/%D0%9E%D0%B7%D0%BE%D0%BD&rut=e42985fe5fc3fd73d953ce2657f73d08fbb8c819b3e6adbd08e220438e5e19fb
https://fb.ru/article/230321/chto-takoe-ozon-ego-svoystva-i-vliyanie-na-jiznedeyatelnost-cheloveka&rut=e3ad619110f563b4ac580d0d058cb38736be998242a5c3dec9ef5b19ff5799e5
https://www.iqair.com/ru/newsroom/ozone&rut=9df29f2ba59417e95b6e537f7352f04a251c4862f652247bb57e4dbc7cb92eb1
https://my.o3.ua/&rut=2a90d1d935a00fbb8323c6ba79e987612793ebf440317bffa35258998fc54210
https://www.un.org/ru/observances/ozone-day/science&rut=aba3c93089b160426eeb6d9811093cfc89f1a6f0a9fef784a086163943585786
https://www.thefreedictionary.com/O3&rut=30e4448b8ae4a3b31505e6f6e514b948e7489cd873b93376e3d5b9e657d2cc57
