Tandem differential mobility spectrometry with ion dissociation in air at ambient pressure and temperature.
Tandem differential mobility spectrometry with ion dissociation in air at ambient pressure and temperature.
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在环境压力和温度下，在空气中进行离子解离的串联差分迁移谱测定。
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
G. Eiceman
中科院分区：
文献类型：
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作者：
M. Menlyadiev;A. Tarassov;A. M. Kielnecker;G. Eiceman
用超高场不对称离子迁移率谱(UFIMS)研究了常压常温下空气中质子结合二聚体的解离过程，其中乙酸乙酯和膦酸二甲酯的解离起始时间分别为96Td和170Td。然后用差示迁移率光谱仪(DMS)测量离子。在90Td或更大的电场下，碎片离子与乙酸丙酯形成。在超离子轰击中，补偿场接近于零的离子解离，形成具有新补偿场的较小离子，为在没有气体改进剂的情况下提高DMS的峰容量提供了方法。这些发现也为以离子解离或碎裂为中心阶段的三阶段DMS奠定了基础。
Proton-bound dimers were dissociated to protonated monomers in air at ambient pressure and temperature using electric fields of ultrahigh Field Asymmetric Ion Mobility Spectrometry (ultraFAIMS) with the onset of dissociation for ethyl acetate as 96 Td and for dimethyl methyl phosphonate as 170 Td. Ions then were measured by differential mobility spectrometry (DMS). Fragment ions were formed with propyl acetate at electric fields of 90 Td or greater. The dissociation in ultraFAIMS of ions, with compensation fields near zero, to form smaller ions with new compensation fields, provided a method to improve peak capacity in DMS without gas modifiers. These findings also lay the foundation for a triple stage DMS with a centre stage for ion dissociation or fragmentation.
影响因子：
7.4
作者：
Shvartsburg, Alexandre A.;Smith, Richard D.;Wilks, Ashley;Koehl, Andrew;Ruiz-Alonso, David;Boyle, Billy
通讯作者：
Boyle, Billy
影响因子：
7.4
作者：
Levin, Daren S.;Miller, Raanan A.;Vouros, Paul
通讯作者：
Vouros, Paul