Is plasma desorption mass spectrometry useful for small-molecule analysis? Fragmentations of the natural .alpha.-amino acids

Is plasma desorption mass spectrometry useful for small-molecule analysis? Fragmentations of the natural .alpha.-amino acids
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等离子体解吸质谱对于小分子分析有用吗？

DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
C. Mauriac
C. Mauriac
中科院分区：
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文献类型：
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作者：
S. Bouchonnet;J. Denhez;Y. Hoppilliard;C. Mauriac

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等离子体解吸质谱法（PDMS）非常适合于小固体化合物的研究。这种技术结合了“软”和“高能”电离方法的优点：可以观察到MH +离子以及广泛的强烈碎片。高分辨率的测量、亚稳跃迁和标记离子使鉴定形成的离子成为可能。根据分子质子化位点的不同，MH +离子的断裂过程呈现出多种结构；在多功能分子的情况下，每个基本位点上的质子化可以诱导断裂
Plasma desorption mass spectrometry (PDMS) is well suited for studying small solid compounds. This technique combines together the advantages of the «soft» and «energetic» ionization methods: MH + ions as well as extensive intense fragmentations are observed. High-resolution measurements, metastable transitions, and labeled ions have made possible an identification of the ions formed. The fragmentation processes demonstrate several sructures for the MH + ion depending on the protonation site of the molecule;in the case of multifunctional molecules, fragmentation can be induced by a protonation on each basic site