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Encyclopedia > Strontium unit

The strontium unit is a unit used to measure the amount of radioactivity from strontium-90, a chemical found in nuclear fallout, in a subject's body; as the human body mistakes the substance for calcium and incorporates it into the skeleton, its presence is very common. One strontium unit is equal to one picocurie (3.7×10−2 becquerels) from strontium-90 per gram of calcium in the subject's skeleton.


The United States National Academy of Sciences holds that the maximum safe measure of strontium-90 in a person is one hundred strontium units. The average American is estimated to have three to four units.


The strontium unit was formerly known briefly as the sunshine unit, a term promoted by the United States Department of Defense until public ridicule brought about its disuse.


  Results from FactBites:
 
Strontium unit - Wikipedia, the free encyclopedia (164 words)
The strontium unit is a unit used to measure the amount of radioactivity from strontium-90, a chemical found in nuclear fallout, in a subject's body; as the human body mistakes the substance for calcium and incorporates it into the skeleton, its presence is very common.
One strontium unit is equal to one picocurie from strontium-90 per gram of calcium (37 becquerels per kilogram) in the subject's skeleton.
The United States National Academy of Sciences holds that the maximum safe measure of strontium-90 in a person is one hundred strontium units (3700 Bq/kg).
Strontium - Wikipedia, the free encyclopedia (1169 words)
Strontium is a chemical element in the periodic table that has the symbol Sr and the atomic number 38.
Strontium is a bright silvery metal that is softer than calcium and even more reactive in water, which strontium decomposes on contact to produce strontium hydroxide and hydrogen gas.
Strontium itself was discovered in 1798 and metallic strontium was first isolated by Sir Humphry Davy in 1808 using electrolysis.
  More results at FactBites »


 

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