Patent ID: 9337005
Filing Date: 2016-05-10
CPC Classification: H01J

Claim Text:
1. A method of mass spectrometry comprising: (i) providing a plurality of different parent ions; (ii) mass analysing said parent ions so as to obtain first mass spectral data; (iii) subjecting said parent ions to Electron Capture Dissociation (“ECD”) or Electron Transfer Dissociation (“ETD”) at atmospheric pressure to produce fragment or product ions; (iv) mass analysing said fragment or product ions so as to obtain second mass spectral data; (v) wherein the parent ions are intermittently and repeatedly subjected to said ECD or ETD such that the method repeatedly alternates between steps (ii) and (iv); and (vi) associating parent ions detected in said first mass spectral data with fragment or product ions detected in said second mass spectral data.