Study of Method to Determine Boron Isotope Abundance Using Mass Spectrometry
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摘要: 通过检测天然硼同位素中的负离子BO2-,对天然硼同位素丰度比的质谱的测定方法进行了研究。对发射剂的选取、氧同位素贡献的扣除、质量歧视效应的修正等方面的研究表明,利用SrCl2作为发射剂,对硼同位素丰度进行质谱测量,可以简化样品前处理方法,减少样品进样量,降低分馏效应对测量的影响,提高数据的准确性和重现性,提高了热电离质谱测量微量硼同位素丰度比的不确定度水平。Abstract: This paper introduced the measurement of natural boron isotope abundance ratio detecting of BO2―by mass spectrometry.The uncertainty of measurement result was cut down by the work of selecting emit reagent,deducting the contribution of oxygenium and adjusting the mass fractionation effect.
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Key words:
- Boron isotope /
- Abundauce ratio /
- Thermal ionization mass spectrometer /
- Emit reagent
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