In Silico Demonstration of Two-Dimensional Mass Spectrometry Using Spatially Dependent Fragmentation.

In Silico Demonstration of Two-Dimensional Mass Spectrometry Using Spatially Dependent Fragmentation.
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DOI:
10.1021/jasms.2c00241
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发表时间:
2023-03-01
影响因子:
3.2
通讯作者:
O'Connor, Peter B.
O'Connor, Peter B.
中科院分区:
化学3区
文献类型:
--
作者:
Littlejohn, Callan;Li, Meng;O'Connor, Peter B.

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二维质谱(2DMS)允许以高速和分辨率分析所有类型的复杂混合物,而不会因隔离或偏置采集而造成数据丢失,从而有效地同时产生所有离子的串联质谱学信息。目前,这项技术仅限于使用离子陷阱的仪器,如傅里叶变换离子回旋共振或线性离子陷阱。为了克服这一限制,在时间或空间配置中使用了新的碎裂波形,从而允许在更广泛的仪器阵列上应用2DMS。用新的波形显示了一个基于飞行时间的仪器的模拟实例,它允许通过傅里叶变换对碎片强度的调制处理来关联碎片离子与它们各自的前兆。这一应用表明,2D调制和傅里叶前体/碎片强度相关在任何情况下都是可能的,其中可以实现时间或空间上的分离,从而允许2DMS应用于几乎所有类型的质谱仪。
Two-dimensional mass spectrometry (2DMS) allows for the analysis of complex mixtures of all kinds at high speed and resolution without data loss from isolation or biased acquisition, effectively generating tandem mass spectrometry information for all ions at once. Currently, this technique is limited to instruments utilizing an ion trap such as the Fourier transform ion cyclotron resonance or linear ion traps. To overcome this limitation, new fragmentation waveforms were used in either a temporal or spatial configuration, allowing for the application of 2DMS on a much wider array of instruments. A simulated example of a time-of-flight-based instrument is shown with the new waveforms, which allowed for the correlation of fragment ions to their respective precursors through the processing of the modulation of fragmentation intensity with a Fourier transform. This application indicated that 2D modulation and Fourier precursor/fragment intensity correlation are possible in any case where separation, either temporally or spatially, can be achieved, allowing 2DMS to be applied to almost every type of mass spectrometry instrument.
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