The following is an abstract for the selected article. A PDF download of the full text of this article is available here. Members may download full texts at no charge. Non-members may be charged a small fee for certain articles.
Structural Mass Spectrometry of Matrix-Assisted Laser-Desorbed Biomolecules by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry: Photoionization and Photofragmentation
Volume 47, Number 2 (Feb. 1993) Page 211-217
Solouki, Touradj; Russell, David H.
Laser desorption ionization of compounds that absorb 337 nm (e.g., vitamin B12 and selected porphyrins) are examined by using Fourier transform ion cyclotron resonance (FTICR) mass spectrometry. The experiments are performed by mixing the sample with a host compound that promotes desorption and/or ionization. The relative abundance of photofragment ions can be controlled by simple adjustments of parameters such as the laser power and matrix-to-analyte ratio. In addition, it is shown that gas-phase photoionization/photodissociation of laser-desorbed species by a second laser pulse provides structural information for both negative and positive ions.