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Occurrence example 1 ~0.027 Radon concentration at the shores of large oceans is typically 1 Bq/m 3. Radon trace concentration above oceans or in Antarctica can be lower than 0.1 Bq/m 3, [100] with changes in radon levels being used to track foreign pollutants. [101] 10: 0.27 Mean continental concentration in the open air: 10 to 30 Bq/m 3.
Alternatively, radon may enter the body through contaminated drinking water or through the decay of ingested radium [3] – making radon diffusion one of the greatest dangers of radium. [10] Thus, 222 Rn is a carcinogen ; in fact, it is the second leading cause of lung cancer in the United States after cigarette smoking , [ 3 ] with over 20,000 ...
Radon compounds are chemical compounds formed by the element radon (Rn). Radon is a noble gas, i.e. a zero-valence element, and is chemically not very reactive. The 3.8-day half-life of radon-222 makes it useful in physical sciences as a natural tracer. Because radon is a gas under normal circumstances, and its decay-chain parents are not, it ...
Radon, a byproduct of naturally decaying uranium, is estimated to cause thousands of deaths each year nationwide. Here's how to protect yourself.
The radon levels in some of the mines can reach 400 to 700 kBq m −3. [17] A common unit of exposure of lung tissue to alpha emitters is the working level month (WLM), this is where the human lungs have been exposed for 170 hours (a typical month worth of work for a miner) to air which has 3.7 kBq of 222 Rn (in
Isotopic mass [3] [n 2] [n 3] Half-life Decay mode Daughter isotope Spin and parity [n 4] [n 5] Isotopic abundance; ... Radon [n 13] Radium emanation Emanation Emanon ...
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Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless [47] noble gas, occurring naturally as the decay product of uranium or thorium. Its most stable isotope, 222 Rn, has a half-life of 3.8 days. Radon is one of the densest substances that remains a gas under normal conditions. It ...