Tandem Mass Spectrometry

The tandem mass spectrometry, in which two or more mass spectrometers are integrated, is a combination of two-step mass analyzers in time or space. The spatial tandem mass spectrometry is made up of two or more mass analyzers, including common triple quadrupole tandem mass spectrometry (QQQ), quadrupole linear ion trap mass spectrometry (Q-TRAP), and quadrupole time-of-flight tandem mass spectrometry (Q-TOF).