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Probing the mechanisms of ambient ionization by laser‐induced fluorescence spectroscopy
Author(s) -
Frankevich V.,
Nieckarz R. J.,
Sagulenko P. N.,
Barylyuk K.,
Zenobi R.,
Levitsky L. I.,
Agapov A. Yu.,
Perlova T. Y.,
Gorshkov M. V.,
Tarasova I. A.
Publication year - 2012
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.6264
Subject(s) - chemistry , atmospheric pressure laser ionization , ambient ionization , ionization , matrix assisted laser desorption electrospray ionization , mass spectrometry , desorption electrospray ionization , desorption , ion source , analytical chemistry (journal) , soft laser desorption , chemical ionization , ion , electrospray ionization , thermal ionization , fluorescence , laser , atmospheric pressure , matrix assisted laser desorption/ionization , fluorescence spectroscopy , photoionization , electron ionization , chromatography , optics , physics , oceanography , organic chemistry , adsorption , geology
The ionization mechanisms of several atmospheric pressure ion sources based on desorption and ionization of samples deposited on a surface were studied. Home‐built desorption electrospray ionization (DESI), laserspray ionization (LSI), and atmospheric pressure matrix‐assisted laser desorption/ionization (AP‐MALDI) sources were characterized using low‐molecular‐weight compounds, in particular fluorescent dyes. Detection of the desorbed and ionized species was performed by laser‐induced fluorescence and ion cyclotron resonance mass spectrometry. The dependences of the signal intensities on various experimental parameters were studied. The data obtained reveals common features, such as formation of solvated species and clusters in the ionization processes, in all of the techniques considered. Copyright © 2012 John Wiley & Sons, Ltd.