Abstract
AFTER an extensive investigation, we conclude that a boron-11/boron-10 ratio of 4.00 (that is, 80/20) approaches the true natural abundance ratio much more closely than the presently ‘accepted’ value of 4.31 (81.17/18.83). The latter figure is based on a mass spectrometric investigation of boron trifluoride1, a notoriously troublesome compound, in view of its adsorption characteristics resulting in instrumental ‘memory’. Since publication of that work a number of attempts to verify the abundance ratio from boron trifluoride have resulted in a wide range of values.
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References
Inghram, M., Phys. Rev., 70, 653 (1946).
German Atomic Weight Commission, Ber. deutsch. chem. Ges., 56 A, xvii (1923); 57 A, xvi (1924). International Committee on Chemical Elements, J. Amer. Chem. Soc., 47, 597 (1925).
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LEHMANN, W., SHAPIRO, I. Isotopic Composition of Boron and its Atomic Weight. Nature 183, 1324 (1959). https://doi.org/10.1038/1831324a0
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DOI: https://doi.org/10.1038/1831324a0
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