Probing the mechanisms of ambient ionization by laser-induced fluorescence spectroscopy

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/ioniza...

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Bibliographic Details
Published in:	Rapid communications in mass spectrometry Vol. 26; no. 13; pp. 1567 - 1572
Main Authors:	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.
Format:	Journal Article
Language:	English
Published:	Chichester, UK John Wiley & Sons, Ltd 15-07-2012 Wiley Subscription Services, Inc
Subjects:	Aspirin - analysis Aspirin - chemistry Atmospheric pressure Barometric pressure Deposition Desorption Fluorescence Fluorescent Dyes Ionization Ions - analysis Ions - chemistry Mass spectrometry Spectrometry, Fluorescence - instrumentation Spectrometry, Fluorescence - methods Spectrometry, Mass, Electrospray Ionization - instrumentation Spectrometry, Mass, Electrospray Ionization - methods Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - instrumentation Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods
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Summary:	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.
Bibliography:	istex:D1E0AD70F981864834DFEA9DC1713B0FEB681EEB ark:/67375/WNG-9TFBWLN0-F ArticleID:RCM6264 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0951-4198 1097-0231
DOI:	10.1002/rcm.6264