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It is a radioactive isotope of strontium produced by nuclear fission with a half-life of 28.8 years. It undergoes β− decay into yttrium-90, with a decay energy of 0.546 MeV. Strontium-90 has applications in medicine and industry and is an isotope of concern in fallout from nuclear weapons and nuclear accidents.
Strontium-90 is a "bone seeker" that exhibits biochemical behavior similar to calcium, the next lighter group 2 element. After entering the organism, most often by ingestion with contaminated food or water, about 70–80% of the dose gets excreted. Virtually all remaining strontium-90 is deposited in bones and bone marrow, with the remaining 1% remaining in blood and soft tissues. Its presence in bones can cause bone cancer, cancer of nearby tissues, and leukemia. Exposure to 90Sr can be tested by a bioassay, most commonly by urinalysis. Strontium-90 is probably the most dangerous component of the radioactive fallout from a nuclear weapon.
A study of hundreds of thousands of deciduous teeth, collected by Dr. Louise Reiss and her colleagues as part of the Baby Tooth Survey, found a large increase in 90Sr levels through the 1950s and early 1960s. The study's final results showed that children born in 1963 had levels of 90Sr in their deciduous teeth that was 50 times higher than that found in children born in 1950, before the advent of large-scale atomic testing. Commentators on the study said that the fallout was likely to cause increased cases of diseases in those who absorb strontium-90 into their bones.
Originally posted by jude11
Ok, I'm in July of '63.
I'm listening but damn I don't want to hear.
I'm off to search a little more.
Does this concern Canadians as well? Or is it like always...The US?
Originally posted by shells4u
reply to post by Unity_99
as far as my health issues go I get skin cancer the non malignant sort, but that,s the sun and I have fair skin, I am pretty healthy except over my weight limit, I blame that on food...lol...and low willpower. I have only broken one bone in my elbow but that was a horse accident...So as of yet I really don't have anything I can blame the strontium-90 for...And yes Spirit is a good thing sorry for your health issues, have you asked a physician about this exposure or did the physician tell you about it? And last question...what region were you born and raised in as a child?
On August 5, 1963, after more than eight years of difficult negotiations, the United States, the United Kingdom, and the Soviet Union signed the Limited Nuclear Test Ban Treaty.
Originally posted by Hijinx
reply to post by shells4u
I'd be more concerned with the peak of testing(1962) and the 28 year period that follows.