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Radon concentration can differ widely from place to place. In the open air, it ranges from 1 to 100 Bq/m 3, even less (0.1 Bq/m 3) above the ocean. In caves or ventilated mines, or poorly ventilated houses, its concentration climbs to 20–2,000 Bq/m 3. [79] Radon concentration can be much higher in mining contexts.
The general population is exposed to small amounts of polonium as a radon daughter in indoor air; the isotopes 214 Po and 218 Po are thought to cause the majority [92] of the estimated 15,000–22,000 lung cancer deaths in the US every year that have been attributed to indoor radon. [93] Tobacco smoking causes additional exposure to polonium. [94]
The highest levels of radon in rainwater occur during thunderstorms, and it is hypothesized that radon is concentrated in thunderstorms because it forms some positive ions during thunderstorms. [12] Estimates of the age of raindrops have been obtained from measuring the isotopic abundance of radon's short-lived decay progeny in rainwater. [13]
Al Roker's daughter, Courtney Roker Laga, revealed a heartbreaking family loss on social media. On Monday, Feb. 11, Courtney, 37, took to Instagram to announce the death of her mother, Alice Bell ...
Lung cancer is the only observed consequence of high concentration radon exposures; both human and animal studies indicate that the lung and respiratory system are the primary targets of radon daughter-induced toxicity. [1] Radon has a short half-life (3.8 days) and decays into other solid particulate radium-series radioactive
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Lily Collins is now a mom!. The 35-year-old "Emily in Paris" star and husband Charlie McDowell announced they have welcomed their first child via surrogacy in a Friday Instagram post.In the post ...
There are 39 known isotopes of radon (86 Rn), from 193 Rn to 231 Rn; all are radioactive.The most stable isotope is 222 Rn with a half-life of 3.8235 days, which decays into 218 Po