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A preliminary comparison of time-of-flight laser ionization and secondary ion mass spectrometry in solids analysis
Spectrochimica Acta Part B: Atomic Spectroscopy ( IF 3.3 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.sab.2020.105824
Zhouyi Xu , Le Hang , Qiao Lu , Ning Guo , Wei Hang

Abstract In this work, a preliminary comparison was made between buffer-gas-assisted laser ionization time-of-flight mass spectrometry (LI-TOFMS) and time-of-flight secondary ionization mass spectrometry (TOF-SIMS). A reference steel sample and a soil sample were used as representative metal and oxide solid samples in the experiment. The comparison was focused on their spectral characteristics and standard-less quantitative capability in determine elements in solid samples. Since the oxygen has low ion yield, a new standard-less quantitative method was proposed for oxides analysis, which derives the oxygen intensity from other detected elements using their common oxidation states in calculation of oxygen concentration. The results indicate that both techniques meet the needs of standard-less semi-quantitative analysis. However, LI-TOFMS offers spectra with less interference, and leads to more determined elements and accurate quantitative results.

中文翻译:

飞行时间激光电离与二次离子质谱在固体分析中的初步比较

摘要 本文对缓冲气体辅助激光电离飞行时间质谱(LI-TOFMS)和飞行时间二次电离质谱(TOF-SIMS)进行了初步比较。在实验中使用参考钢样品和土壤样品作为代表性金属和氧化物固体样品。比较的重点是它们的光谱特性和测定固体样品中元素的无标准定量能力。由于氧的离子产率低,提出了一种新的无标准定量方法用于氧化物分析,该方法在计算氧浓度时使用其他检测元素的常见氧化态来推导出氧强度。结果表明,这两种技术都满足了无标准半定量分析的需要。然而,
更新日期:2020-05-01
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