Charge determination of product ions formed from collision-induced dissociation of multiply protonated molecules via ion/molecule reactions.

The use of ion/molecule reactions involving multiply protonated ions derived from electrospray for the determination of the charges of product ions formed from collision-induced dissociation is described. The experiments are carried out with a quadrupole ion trap capable of multiple stages of mass spectrometry. The approach is illustrated with proton… CONTINUE READING