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Iodine-131 (131 I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. [3] It has a radioactive decay half-life of about eight days.
The beta particles emitted by the radioisotope destroys the associated thyroid tissue with little damage to surrounding tissues (more than 2.0 mm from the tissues absorbing the iodine). Due to similar destruction, 131 I is the iodine radioisotope used in other water-soluble iodine-labeled radiopharmaceuticals (such as MIBG) used therapeutically ...
129 I, 131 I (radioiodine) and 132 I. Open air nuclear testing and the Chernobyl disaster both released iodine-131. The short-lived isotopes of iodine are particularly harmful because the thyroid collects and concentrates iodide – radioactive as well as stable. Absorption of radioiodine can lead to acute, chronic, and delayed effects.
131 I, with a half-life of 8 days, is a hazard from nuclear fallout because iodine concentrates in the thyroid gland. See also Radiation effects from Fukushima Daiichi nuclear disaster#Iodine-131 and Downwinders#Nevada. In common with 89 Sr, 131 I is used for the treatment of cancer.
Source of much of the decay heat together with 137 Cs on the timespan of years to decades after irradiation. Formerly used in radioisotope thermoelectric generators. 2.8336%: Iodine: 131 I: 8.02 d: Reason for the use of potassium iodide tablets after nuclear accidents or nuclear bomb explosions. 2.2713%: Promethium: 147 Pm: 2.62 y
President-elect Donald Trump is set to take office on Jan. 20. Once he takes the reins, a number of economic changes could ensue. Trump has proposed slapping tariffs on goods the U.S. imports from ...
However, radioactive iodine is a disproportionate biohazard because the thyroid gland concentrates iodine. 129 I has a half-life nearly a billion times as long as its more hazardous sister isotope 131 I; therefore, with a shorter half-life and a higher decay energy, 131 I is approximately a billion times more radioactive than the longer-lived ...
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