Mass analyzer |  Sampling |  Separation |  Typical resolution | Mass accuracy |      Tandem mass spectrometry | |
---|---|---|---|---|---|---|
Quadrupole | Continuous ion beam | Trajectory stability | 2,000 | 100Â ppm | Triple quadrupoles: CID (precursor ion scan, product ion scan, neutral loss) | Low energy collision |
Ion trap | Continuous ion beam | Frequency | 4,000 | 100Â ppm | CID MSn, ETD, ECD | Low energy collision |
TOF | Pulsed ion beam | Flight time | 10 000 | 10Â ppm for reflection TOF | TOF/TOF: CID | High energy collision |
Q-TOF: CID | Low energy collision | |||||
Orbitrap | Pulsed ion beam | Frequency | 100,000 | <5Â ppm | CID, HCD, ETD | Low energy collision |
FT-ICR | Pulsed ion beam | Frequency | 105-106 | <5Â ppm | SORI-CID, ECD, IRMPD, EDD | Low energy collision |