title: Ion Isolation in a Linear Ion Trap Using Dual Resonance Frequencies.
abstract: Ion isolation in a linear ion trap is demonstrated using dual resonance frequencies, which are applied simultaneously. One frequency is used to eject ions of a broad m/z range higher in m/z than the target ion, and the second frequency is set to eject a range of ions lower in m/z. The combination of the two thus results in ion isolation. Despite the simplicity of the method, even ions of low intensity may be isolated since signal attenuation is less than an order of magnitude in most cases. The performance of dual frequency isolation is demonstrated by isolating individual isotopes of brominated compounds. Graphical Abstract ᅟ.
authors.affiliation: Department of Chemistry and Center for Analytical Instrumentation Development, Purdue University, West Lafayette, IN, 47907, USA.
authors.forename: Dalton T
authors.initials: DT
authors.lastname: Snyder
authors.affiliation: Department of Chemistry and Center for Analytical Instrumentation Development, Purdue University, West Lafayette, IN, 47907, USA. cooks@purdue.edu.
authors.forename: R Graham
authors.initials: RG
authors.lastname: Cooks
keywords: Ion isolation; Linear ion trap; Tandem mass spectrometry