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Polonium-210 (210 Po, Po-210, historically radium F) is an isotope of polonium. It undergoes alpha decay to stable 206 Pb with a half-life of 138.376 days (about 4 + 1 ⁄ 2 months), the longest half-life of all naturally occurring polonium isotopes ( 210–218 Po). [ 1 ]
Scaramella tests positive for polonium-210 and is admitted into a hospital. Litvinenko's widow also tests positive for polonium-210, but was not sent to the hospital for treatment. 2 December: Scotland Yard's counter-terrorist unit have questioned Yuri Shvets, a former KGB spy who emigrated to the United States in 1993. He was questioned as a ...
Polonium can be found in uranium ores at about 0.1 mg per metric ton (1 part in 10 10), [51] [52] which is approximately 0.2% of the abundance of radium. The amounts in the Earth's crust are not harmful. Polonium has been found in tobacco smoke from tobacco leaves grown with phosphate fertilizers. [53] [54] [55]
The powerful alpha emitter polonium-210 (a milligram of 210 Po emits as many alpha particles per second as 4.215 grams of 226 Ra) is suspected of playing a role in lung cancer and bladder cancer related to tobacco smoking. [16] 210 Po was used to kill Russian dissident and ex-FSB officer Alexander V. Litvinenko in 2006. [17]
There are 42 isotopes of polonium (84 Po). They range in size from 186 to 227 nucleons. They are all radioactive. 210 Po with a half-life of 138.376 days has the longest half-life of any naturally-occurring isotope of polonium and is the most common isotope of polonium. It is also the most easily synthesized polonium isotope.
As with most blood tests, false-negatives can happen, meaning results could come back negative when a cancer does exist — although Grail reports that negative cancer test results from Galleri ...
polonium-192m ~1 radon-210m3: 1.04 thorium-219: 1.05 polonium-206m2: 1.05 radon-210m2: 1.06 curium-243m: 1.08 actinium-218: 1.08 lead-192m2: 1.1 plutonium-237m2: 1.1 lead-197m2: 1.15 americium-241m: 1.2 radium-215m2: 1.39 bismuth-211m: 1.4 uranium-222: 1.4 radium-217: 1.63 neptunium-223: 2.15 radium-210m: 2.24 radon-215: 2.30 bismuth-217m: 2.70 ...
Polonium poisoning can cause nausea, vomiting, anorexia, and lymphopenia. It can also damage hair follicles and white blood cells. [2] [74] Polonium-210 is only dangerous if ingested or inhaled because its alpha particle emissions cannot penetrate human skin. [65] Polonium-209 is also toxic, and can cause leukemia. [75]