Synchronized scanning of the first and second mass spectrometers on tandem double-focusing mass spectrometers.
Synchronized scanning of the first and second mass spectrometers on tandem double-focusing mass spectrometers.
复制标题
在串联双聚焦质谱仪上同步扫描第一和第二质谱仪。
DOI：
10.1021/ac9608634
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发表时间：
1997
影响因子：
7.4
通讯作者：
Strobel,FH
中科院分区：
文献类型：
--
作者：
Strobel,FH
描述了一种同步串联双聚焦质谱仪的第一和第二双聚焦质谱仪的扫描的方法。通过使用电压而不是磁场扫描第一质谱仪来同步扫描。该方法通过提供产生选定产物离子的所有前体离子的扫描来演示（前体离子扫描）。将这些前体离子扫描与之前在串联双聚焦质谱仪上获得前体离子扫描的方法进行比较。使用同步扫描的前体离子扫描允许在任何串联双聚焦质谱仪上使用高能碰撞，同时限制单次扫描中可能的质量范围。可以通过在第一质谱仪上获得具有不同磁场的几个谱来校正有限的质量范围。
A method is described to synchronize the scans of the first and second double-focusing mass spectrometers of a tandem double-focusing mass spectrometer. The scans are synchronized by scanning the first mass spectrometer with voltages instead of the magnetic field. The method is demonstrated with scans that provide all of the precursor ions that produce a selected product ion (precursor ion scan). These precursor ion scans are compared to the previous method of obtaining precursor ion scans on a tandem double-focusing mass spectrometer. The precursor ion scans using the synchronized scanning allow for the use of high-energy collisions on any tandem double-focusing mass spectrometer, while limiting the mass range possible in a single scan. The limited mass range may be corrected by obtaining several spectra with different magnetic fields on the first mass spectrometer.