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首页> 外文期刊>Journal of the Mass Spectrometry Society of Japan >Reduction of Cu(Ⅱ) and Riboflavin in DIOS Mass Spectrometry
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Reduction of Cu(Ⅱ) and Riboflavin in DIOS Mass Spectrometry

机译：DIOS质谱中铜（Ⅱ）和核黄素的还原

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摘要

Understanding ion-molecular reactions is suggested to be essential to delineating the mechanisms of matrix-assisted laser desorption/ionization (MALDI) and related ionization methods. To examine the implications of matrix-analyte reactions in the reduction observed in MALDI, copper(Ⅱ) chloride and riboflavin were analyzed by desorption/ionization on porous silicon (DIOS) mass spectrometry. This system does not require a matrix for soft laser desorption/ionization. The two susbstances were reduced by DIOS as well, and the reduction of riboflavin was accelerated using water as a solvent, as reported in MALDI. The results indicated that target-analyte electron transfer occurs in LDI, although the possibility of matrix-analyte electron transfer in MALDI cannot be excluded.
机译：建议了解离子分子反应对于描述基质辅助激光解吸/电离（MALDI）的机理和相关的电离方法至关重要。为了考察基质分析物反应对MALDI还原反应的影响，通过多孔硅（DIOS）质谱上的解吸/电离分析了氯化铜（Ⅱ）和核黄素。该系统不需要用于软激光解吸/电离的基质。如MALDI中所述，DIOS还可减少这两种情况，并且用水作溶剂可促进核黄素的减少。结果表明，尽管不能排除MALDI中基质-分析物电子转移的可能性，但LDI中发生了目标-分析物电子转移。

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