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Calibration of the internal energy distribution of ions produced by electrospray

✍ Scribed by C. Collette; E. De Pauw

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
106 KB
Volume
12
Category
Article
ISSN
0951-4198

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✦ Synopsis

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 voltage on the sampling cone, the nature of the collision gas, the composition of the mobile phase). The influence of the experimental conditions on the internal energy of the ions permits the calibration of individual working conditions.

πŸ“œ SIMILAR VOLUMES

Comparison of the internal energy distri
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✍ C. Collette; L. Drahos; E. De Pauw; K. VΓ©key πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 79 KB πŸ‘ 1 views

The internal energies of the emitted ions can be modulated in an electrospray source through different experimental conditions. However, the fragmentation pattern depends also on conditions that cannot be controlled by the operator, e.g. the geometry of the source or the mode of transfer of the ions

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