scholarly journals Solid-phase fluorescence and ionization efficiency in negative-ion matrix-assisted laser desorption/ionization of neutral oligosaccharides: Interaction between β-carboline matrix and ammonium salt

2007 ◽  
Vol 18 (4) ◽  
pp. 714-723 ◽  
Author(s):  
Tohru Yamagaki ◽  
Hiroaki Suzuki ◽  
Kazuo Tachibana
Keyword(s):  
Ammonium Salt ◽  
Solid Phase ◽  
Laser Desorption ◽  
Ionization Efficiency ◽  
Negative Ion ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

Non-linear photoelectron effect contributes to the formation of negative matrix ions in UV-MALDI

2016 ◽  
Vol 18 (29) ◽  
pp. 19574-19587 ◽  
Author(s):  
E. Alonso ◽  
R. Zenobi
Keyword(s):  
Electron Capture ◽  
Laser Desorption ◽  
Negative Ion ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Ion Formation ◽  
Positive Ions ◽  
Non Linear ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

The mechanism of negative ion formation in matrix-assisted laser desorption/ionization (MALDI) is less well understood than that of positive ions: electron capture, disproportionation, and liberation of negatively charged sample molecules or clusters have been proposed to produce the initial anions in MALDI.

Electron capture negative ion mass spectra of some typical matrix-assisted laser desorption/ionization matrices

2002 ◽  
Vol 16 (18) ◽  
pp. 1760-1765 ◽  
Author(s):  
N. L. Asfandiarov ◽  
S. A. Pshenichnyuk ◽  
A. I. Fokin ◽  
V. G. Lukin ◽  
V. S. Fal'ko
Keyword(s):  
Electron Capture ◽  
Mass Spectra ◽  
Laser Desorption ◽  
Negative Ion ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption
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