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  2. Strontium - Wikipedia

    en.wikipedia.org/wiki/Strontium

    The ratio of strontium to calcium in human bones is between 1:1000 and 1:2000, roughly in the same range as in the blood serum. [83] Effect on the human body

  3. Isotopes of strontium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_strontium

    The ratio 87 Sr/ 86 Sr is the parameter typically reported in geologic investigations; [4] ratios in minerals and rocks have values ranging from about 0.7 to greater than 4.0 (see rubidium–strontium dating). Because strontium has an electron configuration similar to that of calcium, it readily substitutes for calcium in minerals.

  4. Isotope analysis in archaeology - Wikipedia

    en.wikipedia.org/wiki/Isotope_analysis_in...

    Information is determined by assessing the ratio of different isotopes of a particular element in a sample. The most widely studied and used isotopes in archaeology are carbon, oxygen, nitrogen, strontium and calcium. [2] An isotope is an atom of an element with an abnormal number of neutrons, changing their atomic mass. [2]

  5. Isotope analysis - Wikipedia

    en.wikipedia.org/wiki/Isotope_analysis

    Archaeological materials, such as bone, organic residues, hair, or sea shells, can serve as substrates for isotopic analysis. Carbon, nitrogen and zinc isotope ratios are used to investigate the diets of past people; these isotopic systems can be used with others, such as strontium or oxygen, to answer questions about population movements and cultural interactions, such as trade.

  6. Calcium - Wikipedia

    en.wikipedia.org/wiki/Calcium

    Calcium, strontium, barium, ... When the rate of bone formation exceeds the rate of bone resorption, the 44 Ca/ 40 Ca ratio in soft tissue rises and vice versa.

  7. Strontium-90 - Wikipedia

    en.wikipedia.org/wiki/Strontium-90

    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 ...

  8. Bone seeker - Wikipedia

    en.wikipedia.org/wiki/Bone_seeker

    A bone seeker is an element, often a radioisotope, that tends to accumulate in the bones of humans and other animals when introduced into the body.. For example, strontium and radium are chemically similar to calcium and can replace the calcium in bones.

  9. Stable nuclide - Wikipedia

    en.wikipedia.org/wiki/Stable_nuclide

    Stability of isotopes is affected by the ratio of protons to neutrons, ... Calcium-48 (2B) ... Strontium-84 (2E)* Strontium-86; Strontium-87;