ASTM WK46892

    New Test Method for the Determination of Uranium Isotopic Composition by the Modified Total Evaporation (MTE) Method Using a Thermal Ionization Mass Spectrometer

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    Developed by Subcommittee: C26.05 | Committee C26 | Contact Staff Manager


    1. Scope

    This method describes the determination of the isotope-amount ratios of uranium material as nitrate solutions by the modified total evaporation (MTE) method using a thermal ionization mass spectrometer (TIMS) instrument. Compared to the classical total evaporation method (C1672-07) the new MTE method allows to measure the minor isotope ratios 234U/238 and 236U/238U with significantly improved precision and accuracy.


    MTE; Modified Total Evaporation; Spectrometer

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Stephan Richter


    C26 (15-04)

    Ballot Item Approved as C1832-2016 and Pending Publication