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硼同位素~(10)B 和~(11)B 由于相对质量差达9.5%,在成矿过程中发生明显的分馏效应,从而导致同位素丰度比 R_(11/10)的变异。最近Holden 对此有详尽的综合评述。国际原子量委员会评估的硼原子量值10.811有较大的不确定度±0.005。本文旨在对若干硼矿物和试剂作精密的 R_(11/10)测量,并以国际硼同位
The boron isotopes ~ (10) B and ~ (11) B, due to the relative mass difference of 9.5%, have obvious fractionation effects during mineralization, resulting in the variation of isotope abundance ratio R_ (11/10). Holden recently detailed comprehensive review. The BMR value of 10.811 by the International Atomic Weight Board has a greater uncertainty of ± 0.005. This article aims to make a precise R_ (11/10) measurement of several boron minerals and reagents,