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    Bromine Isotope Materials

    Measurements of bromine-isotope ratios began by 1920, and since this time a variety of techniques have been developed. Most investigations focus on volatile organic compounds. Standard Mean Ocean Bromine (SMOB) has been proposed as an international reference material for δ(81Br) measurements.

    δ(81Br) Values of Reference Materials

    Name Material δSMOB(81Br)
    SMOBn/a 0 ‰*
    NIST SRM 977NaBr-0.64(6) ‰
    Name Material δSMOB(81Br)

    Footnotes      Back to Top
    * Exact value defining the δ(81Br) SMOB scale.
    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.


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