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Naturally occurring strontium is nonradioactive and nontoxic at levels normally found in the environment, but 90 Sr is a radiation hazard. [4] 90 Sr undergoes β − decay with a half-life of 28.79 years and a decay energy of 0.546 MeV distributed to an electron, an antineutrino, and the yttrium isotope 90 Y, which in turn undergoes β − decay with a half-life of 64 hours and a decay energy ...
Strontium-90 is a by-product of nuclear fission, present in nuclear fallout. The 1986 Chernobyl nuclear accident contaminated a vast area with 90 Sr. [ 6 ] It causes health problems, as it substitutes for calcium in bone , preventing expulsion from the body.
Natural strontium is a mixture of four stable isotopes: 84 Sr, 86 Sr, 87 Sr, and 88 Sr. [11] On these isotopes, 88 Sr is the most abundant, makes up about 82.6% of all natural strontium, though the abundance varies due to the production of radiogenic 87 Sr as the daughter of long-lived beta-decaying 87 Rb. [22]
A bone seeker is an element, often a radioisotope, that tends to accumulate in the bones of humans and other animals when it is introduced into the body. For example, strontium and radium are chemically similar to calcium and can replace the calcium in bones. [1][2] Plutonium is also a bone seeker, though the mechanism by which it accumulates ...
1.492 [1] Isotopes of strontium. Complete table of nuclides. Strontium-89 (89. Sr. ) is a radioactive isotope of strontium produced by nuclear fission, with a half-life of 50.57 days. It undergoes β − decay into yttrium-89. Strontium-89 has an application in medicine.
It was the first time Wyand, a Navy veteran who lived and worked at the shipyard in the late 1980s, learned he may have been exposed to radium-226 and strontium-90 — radionuclides that build up ...
Project GABRIEL was an investigation to gauge the impact of nuclear fallout resulting from nuclear warfare.The United States Atomic Energy Commission surmised that the radioactive isotope strontium-90 (Sr-90) presented the greatest hazard to life globally, [1] which resulted in the commissioning of Project SUNSHINE: which sought to examine the levels of Sr-90 in human tissues and bones (with a ...
According to Irish scientist Kathleen Lonsdale, in the mid-1950s or earlier it was known that strontium 90 is taken up particularly easily by children, that it causes bone tumors, and that "according to the British and American official reports, some children in both countries have already accumulated a measurable amount of radioactive strontium in their bodies."
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