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This means that a person living in an average European dwelling with 50 Bq/m 3 has a lifetime excess lung cancer risk of 1.5–3 × 10 −3. Similarly, a person living in a dwelling with a high radon concentration of 1000 Bq/m 3 has a lifetime excess lung cancer risk of 3–6%, implying a doubling of background lung cancer risk. [63]
Radon is measured in picocuries per liter of air (pCi/L) or becquerel per cubic meter (Bq m-3). Both are measurements of radioactivity. The World Health Organization (WHO) sets the ideal indoor radon levels at 100 Bq/m-3. [97] In the United States, it is recommend to fix homes with radon levels at or above 4 pCi/L.
Epidemiological evidence shows a clear link between lung cancer and high concentrations of radon, with 21,000 radon-induced U.S. lung cancer deaths per year—second only to cigarette smoking—according to the United States Environmental Protection Agency. [5] Thus in geographic areas where radon is present in heightened concentrations, radon ...
Radon is thus assumed to be the second leading cause of lung cancer after smoking, and accounts for 15,000 to 22,000 cancer deaths per year in the US alone. [9] [better source needed] However, the discussion about the opposite experimental results is still going on. [10] About 100,000 Bq/m 3 of radon was found in Stanley Watras's basement in 1984.
3.48 neon-32: 3.5 darmstadtium-277: 3.5 protactinium-211: 3.8 lead-179: 3.9 roentgenium-278: 4 radium-203: 4 seaborgium-260: 4 uranium-216: 4.3 beryllium-14: 4.35 lead-180: 4.5 radon-196: 4.7 fluorine-27: 5 bismuth-189m1: 5.0 francium-214: 5.0 meitnerium-277: 5 nobelium-262: 5 polonium-189: 5 boron-17: 5.08 protactinium-223: 5.1 americium-223: ...
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition). [3]
The consensus of nuclear regulators, governments and the UNSCEAR is that the incidence of cancers due to ionizing radiation can be modeled as increasing linearly with effective dose at a rate of 5.5% per sievert. [1] This is known as the linear no-threshold model (LNT model). Some argue that this LNT model is now outdated and should be replaced ...
Open-air stores also release radon at a level potentially hazardous to workers. [3] Radon is a noble gas that is heavier than air and thus tends to accumulate in poorly ventilated underground spaces like mines or cellars. Naturally occurring radon is considered the second most common cause of lung cancer after smoking. [15]
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