Photoelectron resonance capture ionization mass spectrometry: a soft ionization source for mass spectrometry of particle-phase organic compounds
Article first published online: 4 OCT 2004
Copyright © 2004 John Wiley & Sons, Ltd.
Rapid Communications in Mass Spectrometry
Volume 18, Issue 21, pages 2517–2521, 15 November 2004
How to Cite
LaFranchi, B. W., Zahardis, J. and Petrucci, G. A. (2004), Photoelectron resonance capture ionization mass spectrometry: a soft ionization source for mass spectrometry of particle-phase organic compounds. Rapid Commun. Mass Spectrom., 18: 2517–2521. doi: 10.1002/rcm.1653
- Issue published online: 4 OCT 2004
- Article first published online: 4 OCT 2004
- Manuscript Accepted: 27 AUG 2004
- Manuscript Revised: 26 AUG 2004
- Manuscript Received: 28 JUL 2004
- American Society for Mass Spectrometry
- Vermont EPSCoR
- National Center for Environmental Research (NCER) STAR Program. Grant Number: 91615301-0
Photoelectron resonance capture ionization (PERCI) is a soft and sensitive ionization method, based on the attachment of low-energy (<1 eV) photoelectrons to organic analyte molecules. PERCI has been developed in our laboratory for the real-time analysis of organic particles by mass spectrometry, and is employed here to monitor the heterogeneous reaction of ozone with oleic acid. Simplified identification of the reaction products is possible as a result of the soft nature of PERCI, giving predominantly the [MH]− ions. The major particle-phase products are identified as: 1-nonanal, nonanoic acid, 9-oxononanoic acid, and azelaic acid, consistent with proposed mechanisms. New insight into this well-studied heterogeneous reaction is gained as additional minor particle-phase products, consistent with the Criegee mechanism, are readily detected. Copyright © 2004 John Wiley & Sons, Ltd.