Investigations of desorbed species from matrix materials used in MALDI
Journal Article
·
· AIP Conference Proceedings
- Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, Scotland (United Kingdom)
Despite the widespread use of Matrix Assisted Laser Desorption Ionization (MALDI), the processes involved in ion formation have yet to be satisfactorily explained. Protonation processes have been suggested as a possible method for the creation of the analyte ions. In this work, the existence of neutral hydrogen atoms in the ablation plume is investigated by using the postionization (PI) technique. Neutral atomic hydrogen is ionized through a (2+1) resonant excitation ionization scheme. The mass spectra at different delay times between the ablation and PI lasers have demonstrated the existence of hydrogen atoms with high velocities in the ablated plume.
- OSTI ID:
- 21153771
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 329; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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