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Updated: Aug 10, 2026

Determination of the Gas-phase Acidities of Oligopeptides
Published on: June 24, 2013
Modulations in the abundance of salt clusters in electrosprays
Gamero-Castano1, Fernandez de la Mora J
1Mechanical Engineering Department, Yale University, New Haven, Connecticut 06511-8286, USA.
Abstract:
The abundance of tetraheptylammonium bromide clusters produced from formamide solutions by electrospray ionization (ESI) is investigated. It exhibits a wavy pattern when plotted as a function of cluster size, successive waves being ordered according to the initial cluster charge z. This structure confirms the ion evaporation mechanism of Iribarne and Thomson and simplifies drastically the determination of the distribution of cluster charge z and radius R, from which the kinetics of ion evaporation from charged drops can be inferred.
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