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 δ81Br measurements.
|NIST SRM 977||NaBr||-0.64(6) ‰|
* Exact value defining the δ81BrSMOB 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.