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    Cadmium Isotope Materials

    The most commonly measured cadmium isotope ratio is 114Cd/110Cd because both isotopes have abundances greater than 10 %, and there is a substantial difference in mass between the two isotopes. Variations in δ(114/110Cd) values of terrestrial materials range from −3.6 to +3.4 ‰. The primary technique for analyzing cadmium isotopes is multi-collector ICP-MS, where a routine δ(114/110Cd) uncertainty of 0.4 ‰ can be achieved.

    δ(114/110Cd) Values of Reference Materials

    Name Material δSRM3108(114/110Cd)
    NIST SRM 3108solution 0 ‰
    BAM-I012solution-1.305 ‰ *
    Cd-2211elemental Cd+0.355 ‰
    Name Material δSRM3108(114/110Cd)

    Footnotes      Back to Top
    * Exact value defining the δ(114/110Cd) SRM3108 scale.
    The values listed in this table are compilation and are not necessarily CIAAW recommendations.


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