Means and method for a quadrupole surface induced dissociation quadrupole time-of-flight mass spectrometer

摘要

A means and method are disclosed whereby ions from an ion source can be selected and transferred to a time-of-flight mass analyzer via an arrangement of multipoles in such a way that fragmented ions may be generated by collision-induced dissociation or surface-induced dissociation. First, ions from the source are collisionally cooled by a first multipole. Second, the m/z range of the ions is then selected by a second multipole (preferably a quadrupole). Third, the selected ions are allowed to collide with a “collision surface” capable of producing fragment ions. Fourth, these fragment ions are collisionally cooled in a third multipole and delivered into a TOF mass analyzer for subsequent analysis of the fragmented ions.