Endothermic ion/molecule reactions III. High energy collisional activation at low kinetic energies

Ron Orlando, Catherine Fenselau, Robert J. Cotter

Research output: Contribution to journalArticlepeer-review

Abstract

Endothermic reactions between leucine enkephalin and ammonia have been carried out at very low beam energies, and compared with activation obtained by conventional collision‐induced dissociation at both low and high energies. The similarity between the high‐energy and the reactive‐collisions spectra suggest that comparable energies are imparted by these two methods. The upper limit of the collision energy deposited by reactive collisions is only 0.30 eV. In addition, a substantial increase in the collection efficiency is observed with endothermic reactions, with the sum of the fragment ions exceeding the intensity of the surviving parent ions.

Original languageEnglish (US)
Pages (from-to)259-262
Number of pages4
JournalRapid Communications in Mass Spectrometry
Volume4
Issue number7
DOIs
StatePublished - 1990

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry

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