Quadrupole time-of-flight QTOF instrument

Figure 4.1 Schematic representations of a time-of-fl ight/time-of-fl ight (TOF/TOF) instrument with a matrix-assisted laser desorption/ionization (MALDI) source (a), and a quadrupole time-of-flight (qTOF) instrument which can be interchangeably...

To date, all tandem mass spectrometry in oTOF mass spectrometers has occurred in the front-end injection optics. These instruments are usually called quadrupole time-of flight (QTOF) instruments, because they start with a series... 

Time-of-flight (TOF) analyzers have increased the popularity of high resolution MS, either alone or configured as hybrid quadrupole time of flight (QTOF) instruments. TOF provides sensitivity and selectivity somewhere between single stage and tandem MS. 

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