[en] The internal energy deposited in the ions in the source of a mass spectrometer governs their fragmentation and therefore the content of the spectra, When the ionization conditions are well defined and reproducible, e.g. in electron impact, the elaboration of databases benefits the use of the method. In electrospray, however, the source conditions are not strictly defined. The elaboration of spectra databases therefore requires a calibration of the internal energy of the ions that is valid for all types of spectrometers, A method for the calibration of the internal energy of ions in electrospray is presented, developed using the fragmentation reactions of a set of probe ions (benzylpyridinium salts) under various conditions. The influence of the experimental conditions on the internal energy of the ions permits the calibration of individual working conditions
Disciplines :
Chemistry
Author, co-author :
Collette, Caroline ; Université de Liège - ULiège > Département de Chimie Générale et de Chimie Physique > Laboratoire de Spectrométrie de Masse
Language :
French
Title :
Determination de l'énergie interne des ions produits en spectrométrie de masse à ionisation électrospray
Alternative titles :
[en] Determination of the internal energy of ions produced in mass spectrometry with ionization Electrospray
Defense date :
12 May 2000
Number of pages :
185
Institution :
ULiège - Université de Liège
Degree :
Docteur en Sciences
Promotor :
De Pauw, Edwin ; Université de Liège - ULiège > Département de chimie (sciences)
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