Ⅰ. INTRODUCTIONRecently Dr. H. E. Holden has published a comprehensive review on the isotopic abundance of boron in various terrestrial materials. Among the data of R<sub>11/10</sub>, the ratio of atomic ...Ⅰ. INTRODUCTIONRecently Dr. H. E. Holden has published a comprehensive review on the isotopic abundance of boron in various terrestrial materials. Among the data of R<sub>11/10</sub>, the ratio of atomic fractions of the two boron isotopes with mass of 11 and 10, only a few values are greater than 4.4, which is due to either the inaccuracy of measurement or the uncorrection for the mass discrimination in the mass spectrometric analysis.展开更多
文摘Ⅰ. INTRODUCTIONRecently Dr. H. E. Holden has published a comprehensive review on the isotopic abundance of boron in various terrestrial materials. Among the data of R<sub>11/10</sub>, the ratio of atomic fractions of the two boron isotopes with mass of 11 and 10, only a few values are greater than 4.4, which is due to either the inaccuracy of measurement or the uncorrection for the mass discrimination in the mass spectrometric analysis.
