Analysis of Mixtures by Ion Kinetic Energy Spectrometry

Abstract

Abstract A mass spectrometric method in which separation and compound identification are accomplished in a mass-analyzed ion kinetic energy spectrometer (MIKES) is described. This procedure is possible in a reversed sector (source-magnet-energy analyzer-detector) mass spectrometer when ions characteristic of each mixture component are caused to fragment after mass analysis. For each mass-selected ion, a scan of the ion kinetic energy spectrum identifies the daughter ions arising from unimolecular and/or collision-induced dissociations. Straightforward application of this method to isomeric C5H100 ketone mixtures allows separation, identification, and quantitative analysis which is easy, rapid, and unambiguous.