radon - перевод на русский
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radon - перевод на русский

CHEMICAL ELEMENT WITH THE ATOMIC NUMBER OF 86
Element 86; Niton (element); Radon gas; Emanation (chemistry); Radon (element); Radon (Rn); Radon poisoning; Household radon; Radon trioxide; Rn (element); Emanation (element); Radon daughters; RnO3; History of radon
  • log-normal]] radon distribution in dwellings
  • A digital radon detector
  • [[Emission spectrum]] of radon, photographed by [[Ernest Rutherford]] in 1908. Numbers at the side of the spectrum are wavelengths. The middle spectrum is of Radium emanation (radon), while the outer two are of [[helium]] (added to calibrate the wavelengths).
  • Predicted fraction of U.S. homes having concentrations of radon exceeding the EPA's recommended action level of 4 pCi/L

radon         

['reidɔn]

общая лексика

радон

радонный

существительное

химия

радон

radon         
radon noun chem. радон
radon gas         

нефтегазовая промышленность

радон

Определение

Актинон

An, один из изотопов химического элемента Радона 219Rn.

Википедия

Radon

Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colourless, odourless, tasteless noble gas. It occurs naturally in minute quantities as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into various short-lived radioactive elements and lead. Radon itself is the immediate decay product of radium. Its most stable isotope, 222Rn, has a half-life of only 3.8 days, making it one of the rarest elements. Since thorium and uranium are two of the most common radioactive elements on Earth, while also having three isotopes with half-lives on the order of several billion years, radon will be present on Earth long into the future despite its short half-life. The decay of radon produces many other short-lived nuclides, known as "radon daughters", ending at stable isotopes of lead.

Unlike all other intermediate elements in the aforementioned decay chains, radon is, under standard conditions, gaseous and easily inhaled, and therefore a health hazard. It is often the single largest contributor to an individual's background radiation dose, but due to local differences in geology, the level of exposure to radon gas differs from place to place. A common source is uranium-containing minerals in the ground, and therefore it accumulates in subterranean areas such as basements. Radon can also occur in some ground water like spring waters and hot springs. Climate change may cause radon previously trapped underground to be released as permafrost thaws, particularly in areas like the Arctic, Alaska, Canada, Greenland and Russia. It is possible to test for radon in buildings, and to use techniques such as sub-slab depressurization for mitigation.

Epidemiological studies have shown a clear link between breathing high concentrations of radon and incidence of lung cancer. Radon is a contaminant that affects indoor air quality worldwide. According to the United States Environmental Protection Agency (EPA), radon is the second most frequent cause of lung cancer, after cigarette smoking, causing 21,000 lung cancer deaths per year in the United States. About 2,900 of these deaths occur among people who have never smoked. While radon is the second most frequent cause of lung cancer, it is the number one cause among non-smokers, according to EPA policy-oriented estimates. Significant uncertainties exist for the health effects of low-dose exposures. Unlike the gaseous radon itself, radon daughters are solids and stick to surfaces, such as airborne dust particles, which can cause lung cancer if inhaled.

Примеры произношения для radon
1. Some of these atoms occur naturally -- like in radon gas -- but many others don’t. And
5 Ways Humans Have Changed The Earth
Примеры употребления для radon
1. The WHO International Radon Project also aims to create a global radon database and provide improved global estimates of the disease burden associated with radon worldwide.
2. Radon exposure in homes can be easily mitigated during the construction of new homes, but existing buildings can also be protected from radon.
3. It is a slightly alkaline sodium chloride–radon spa.
4. The spa has the function of radon and sulfur springs.
5. Exposure to high doses of radon can cause lung cancer.