has participant quadrupole mass spectrometry orthogonal-acceleration ion source orthogonal-acceleration time-of-flight mass spectrometer quadrupole mass spectrometer quadrupole time-of-flight mass spectrometry QTOF-MS CHMO:0002719 Q-TOF MS 2010-07-25T05:22:22Z FIX:0000958 Mass spectrometry that uses a system with a quadrupole mass-to-charge analyser connected to a time-of-flight mass-to-charge analyser. Q-TOF-MS Hils QTOF MS