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首页> 外文期刊>Review of Scientific Instruments >Invited Review Article: Recent developments in isotope-ratio mass spectrometry for geochemistry and cosmochemistry
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Invited Review Article: Recent developments in isotope-ratio mass spectrometry for geochemistry and cosmochemistry

机译：特邀评论文章：用于地球化学和宇宙化学的同位素比质谱法的最新进展

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摘要

Mass spectrometry is fundamental to measurements of isotope ratios for applications in isotope geochemistry, geochronology, and cosmochemistry. Magnetic-sector mass spectrometers are most common because these provide the best precision in isotope ratio measurements. Where the highest precision is desired, chemical separation followed by mass spectrometric analysis is carried out with gas (noble gas and stable isotope mass spectrometry), liquid (inductively coupled plasma mass spectrometry), or solid (thermal ionization mass spectrometry) samples. Developments in in situ analysis, including ion microprobes and laser ablation inductively coupled plasma mass spectrometry, have opened up issues concerning homogeneity according to domain size, and allow ever smaller amounts of material to be analyzed. While mass spectrometry is built solidly on developments in the 20th century, there are new technologies that will push the limits in terms of precision, accuracy, and sample efficiency. Developments of new instruments based on time-of-flight mass spectrometers could open up the ultimate levels of sensitivity per sample atom.
机译：质谱法是测量同位素比的基础，适用于同位素地球化学，年代学和宇宙化学。磁扇区质谱仪是最常见的，因为它们在同位素比测量中提供了最佳的精度。在需要最高精度的情况下，化学分离然后进行质谱分析是使用气体（稀有气体和稳定同位素质谱），液体（电感耦合等离子体质谱）或固体（热电离质谱）样品进行的。原位分析的发展，包括离子微探针和激光烧蚀电感耦合等离子体质谱法，已经提出了有关根据域大小均匀性的问题，并允许分析越来越少的材料。虽然质谱法是在20世纪的发展基础上稳固地建立起来的，但是有一些新技术将在精度，准确性和样品效率方面突破极限。基于飞行时间质谱仪的新仪器的开发可以打开每个样品原子的最终灵敏度水平。

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