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    • 6. 发明申请
    • Charge-Stripping of Multiply-Charged Ions
    • 多重带电离子的电荷剥离
    • US20160268113A1
    • 2016-09-15
    • US15031015
    • 2014-10-23
    • MICROMASS UK LIMITEDTHE UNIVERSITY OF BRITISH COLUMBIA
    • Jeffery Mark BrownDamon Robb
    • H01J49/00H01J49/16
    • H01J49/0077H01J49/00H01J49/165
    • A method of mass spectrometry or ion mobility spectrometry is disclosed wherein a sample is ionised by an electrified sprayer so as to produce multiply charged analyte ions of a first polarity in gas-phase. A reaction region is provided downstream of the electrified sprayer, wherein the reaction region is maintained substantially at atmospheric pressure and is maintained substantially free of electric-fields. A gas flow is provided from said electrified sprayer to said reaction region such that the gas flow carries the analyte ions from the electrified sprayer into the reaction region. Free electrons or reagent ions of a second polarity are generated in the reaction region, wherein the second polarity is opposite to said first polarity. The free electrons or reagent ions are then reacted with the analyte ions in the reaction region so as to reduce the charge state of the multiply charged analyte ions and thereby produce charge-reduced analyte ions.
    • 公开了一种质谱法或离子迁移光谱法,其中通过带电的喷雾器对样品进行电离,从而在气相中产生具有第一极性的多电荷分析物离子。 反应区域设置在带电喷雾器的下游,其中反应区域基本保持在大气压力并且基本上没有电场。 从所述带电喷雾器向所述反应区域提供气流,使得气流将来自带电喷雾器的分析物离子进入反应区域。 在反应区域中产生具有第二极性的自由电子或试剂离子,其中第二极性与所述第一极性相反。 然后自由电子或试剂离子与反应区域中的分析物离子反应,以便减少多电荷分析离子的电荷状态,从而产生电荷减少的分析物离子。