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    Magnesium Isotope Materials

    For decades since the 1960s, the NIST SRM 980 material served as a delta-zero material for magnesium isotope ratio measurements. However, in 2003, SRM 980 was demonstrated to be isotopically inhomogeneous at the 0.1 ‰ level. The magnesium delta scales need to be clarified in the near future.


    δ26/24Mg Values of Reference Materials

    Name Material δ26/24MgDSM3
    NIST SRM 980elemental Mg **
    DSM3nitrate solution 0.00(0.12) ‰
    IRMM-009nitrate solution **
    ERM-AE637nitrate solution+2.6 ‰
    ERM-AE638nitrate solution+2311 ‰
    IAPSOseawater-0.93(8) ‰
    JCP1coral-1.99(6) ‰
    Name Material δ26/24MgDSM3

    Footnotes      Back to Top
    ** See the Assessment of international reference materials for isotope-ratio analysis for more details.
    Values in parenthesis are expanded (k = 2) uncertainties applicable to the last digits. The values listed in this table are compilation and are not necessarily CIAAW recommendations.

    Citation

    W.A. Brand et al
    Assessment of international reference materials for isotope-ratio analysis Pure and Applied Chemistry 86, 425-467 (2014)