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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >A laser desorption/resonance enhanced photoionisation TOF-system for the spatially resolved trace analysis of elements
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A laser desorption/resonance enhanced photoionisation TOF-system for the spatially resolved trace analysis of elements

机译：激光解吸/共振增强光电离TOF系统，用于元素的空间分辨痕量分析

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摘要

A novel method for direct and spatially resolved elemental trace analysis with high sensitivity and elemental selectivity is presented. The concept is based on the combination of a commercial MALDI-TOF mass spectrometer with a pulsed laser system for resonant postionisation of neutrals. While the MALDI method is usually applied for investigations of large organic compounds and biomolecules, the technique discussed here concerns the low mass range around 1 ≤ A ≤ 300. The analytical performances of the setup with respect to mass analysis, spatial resolution and overall detection efficiency are discussed.
机译：提出了一种直接和空间分辨元素痕量分析的新方法，具有高灵敏度和元素选择性。该概念基于商用MALDI-TOF质谱仪与脉冲激光系统的组合，用于中性分子的共振后离子化。虽然MALDI方法通常用于研究大型有机化合物和生物分子，但此处讨论的技术涉及1≤A≤300左右的低质量范围。该设置在质量分析，空间分辨率和整体检测效率方面的分析性能讨论。

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