polonium

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polonium

 (Po) [pah-lo´ne-um]
a chemical element, atomic number 84, atomic weight 210. (See Appendix 6.)

po·lo·ni·um (Po),

(pō-lō'nē-ŭm),
A radioactive element, atomic no. 84, isolated from pitchblende; the longest-lived isotope is 209Po (half-life 102 years); 210Po is radium F (half-life 138.38 days), the only readily accessible isotope.
[L. fr. Polonia, Poland, native country of Mme. M.S. Curie who with her husband, P. Curie, discovered the substance]

polonium

/po·lo·ni·um/ (Po) (pah-lo´ne-um) chemical element, at. no. 84.

polonium (Po)

[pəlō′nē·əm]
Etymology: Polonia, Poland
a radioactive element that is one of the disintegration products of uranium. Its atomic number is 84; its atomic mass is approximately 210.

polonium

A rare and highly radioactive chemical element (atomic number 84) discovered by Marie Curie, which has 33 distinct radioactive isotopes. It is an alpha particle emitter with a half-life of 138.4 days that decays directly to its stable daughter isotope, 206Pb, and has such a high energy of emission that it has been used to heat satellites and vehicles in outer space. 210Polonium is 250,000 times more toxic than hydrogen cyanide (HCN): the LD50 for an 80 kg person is 1µg of 210Po compared to 250 mg for HCN.

po·lo·ni·um

(Po) (pŏ-lō'nē-ŭm)
A radioactive element, atomic no. 84, isolated from pitchblende; the longest-lived isotope is 209Po (half-life 102 years); 210Po is radium F (half-life 138.38 days), the only readily accessible isotope.
[L. fr. Polonia, Poland, native country of Mme. Marie S. Curie who with her husband, Pierre Curie, discovered the substance]

polonium

a chemical element, atomic number 84, atomic weight 210, symbol Po. See Table 6.
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References in periodicals archive ?
We understand completely that UK compensational law is imperfect and this could cause difficulties in getting compensation for the victims but despite these circumstances we intend to assist the victims of exposure to Polonium 210 to claim compensation, state benefits and legal redress of every kind, including by bringing or assisting in bringing actions against states in any court or tribunal to which they submit or which has jurisdiction to hear the petitions or claims.
In order for Polonium 210 to cause death, it must be ingested or inhaled.
He is thought to have "significant" information about how the huge fatal dose of polonium 210 was given to Litvinenko, 43,
Over the past week, traces of polonium 210, which was found in a sample of Mr Litvinenko's urine, have been detected at 12 sites, including three British Airways planes which have flown between the UK and Russia.
Cameras outside 25, Grosvenor Street, a property which Alexander Litvinenko is known to have visited, and where traces of polonium 210 have been found Picture: ANDREW PARSONS
In contrast to the corona method, an alpha ionizer uses polonium 210, an extremely mild radiation source, to generate the positively and negatively charged ions.
Scientists in Switzerland have now said: "Several tests on samples of bodily fluids contained an unexplained higher level of polonium 210, compared to control samples.
Arafat died in a Paris hospital of a reported stroke in 2004, but allegations of foul play were again raised when Swiss experts said in June that they discovered "surprisingly" high levels of polonium 210 on the Nobel Peace Prize winner's clothing.
In May, Britain accused Mr Lugovoy, a former KGB agent-turned-businessman, of involvement in the killing of Litvinenko, who died in a London hospital in November from a fatal dose of the radioactive substance polonium 210.
German investigators have found evidence of radioactive polonium 210 in a car and Hamburg apartment both used by Mr Kovtun before he departed for London on November 1 to meet Mr Litvinenko.
He is thought to have significant information about how the huge fatal dose of polonium 210 was given to Mr Litvinenko, 43,
Mario Scaramella met ex-KGB spy Alexander Litvinenko, who died in London last week, on the day he was allegedly poisoned by polonium 210.