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Mercury triple point: isotopic composition and hydrostatic head correction

Mercury triple point: isotopic composition and hydrostatic head correction (some ways for thought). Mercury triple point: isotopic composition and hydrostatic head correction. Mercury triple point: isotopic composition and hydrostatic head correction.

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Mercury triple point: isotopic composition and hydrostatic head correction

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  1. Mercury triple point: isotopic composition and hydrostatic head correction(some ways for thought)

  2. Mercury triple point: isotopic composition and hydrostatic head correction

  3. Mercury triple point: isotopic composition and hydrostatic head correction

  4. Mercury triple point: isotopic composition and hydrostatic head correction Source : IUPAC:International Union of Pure and Applied Chemistry

  5. Mercury triple point: isotopic composition and hydrostatic head correction

  6. Mercury triple point: isotopic composition and hydrostatic head correction

  7. Mercury triple point: isotopic composition and hydrostatic head correction

  8. Mercury triple point: isotopic composition and hydrostatic head correction

  9. Mercury triple point: isotopic composition and hydrostatic head correction

  10. Mercury triple point: isotopic composition and hydrostatic head correction

  11. Mercury triple point: isotopic composition and hydrostatic head correction • Questions: • What confidence in the isotopic composition determination ? • What is the signification of the data spread in “IUPAC table” ? Representative Isotopic Composition. The values represent the isotopic composition of the chemicals and/or materials most commonly encountered in the laboratory.They may not, therefore, correspond to the most abundant natural material. The uncertainties listed in parenthesis cover the range of probable variations of the materials as well as experimental errors. (ISOTOPIC COMPOSITIONS OFTHE ELEMENTS IUPAC 1997)

  12. Mercury triple point: isotopic composition and hydrostatic head correction • Questions: • For the thermometry … what are the sensitivity and distribution coefficients ? Are the uncertainties in the isotopic determinations sufficiently low ? • Modelisation and/or experimental determinations of the influence of the isotopic composition on the triple point temperature?

  13. Mercury triple point: isotopic composition and hydrostatic head correction Atomic Isotope Natural Attained Content of number abundance enrichment in other isotopes element at.% the isotope in the product, at.% mercury Mercury-196 0.146 90 Mercury-198 10.02 99.6 Mercury-199 16.84 94 Mercury-200 23.13 96 Mercury-201 13.22 93 Mercury-202 29.86 99.8 Mercury-204 6.85 98 (Kurchatov Institute (Russian Research Center), Moscow)

  14. Mercury triple point: isotopic composition and hydrostatic head correction 2 main obstacles !!! The prices: “Please take into account mercury isotopes are rather expensive (for example Hg-196 with isotopic enrichment ~ 50,0% costs about 400.00US$/mg”  The chemical purity: “Standard chemical purity is > 99,9% “ Modelisation ???

  15. Mercury triple point: isotopic composition and hydrostatic head correction Correlations in isotopic ratios can help ?

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