Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 495, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ijms.2023.117150
Keywords
Electrospray; Electrospray ionization; Electrospray regimes
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In this study, a coherent classification of electrospray axial regimes is provided based on non-linear fluid dynamics. This classification includes periodic, transient/chaotic, and stationary regimes, and emphasizes the importance of spray current measurements and electrospray characteristic curves in diagnosing the operation and transitions between these regimes. The effect of the electrospray operating regime on the mass spectrometer signal is also summarized.
A coherent classification of electrospray axial regimes is provided based on non-linear fluid dynamics as revealed by spray current measurements and fast time-lapse imaging of the electrified meniscus. The classification includes two periodic (dripping, pulsating), two transient/chaotic (burst, astable), and two stationary (cone-jet, jetting) regimes. The dripping faucet phase diagram is described as a particular case of a more complex electrospray phase diagram. Spray current measurements and electrospray characteristic curves are presented as essential for the diagnosis of the electrospray operation and the transition between its various regimes. Reaching a consensus on regime nomenclature and a standardized approach to designate transitions between electrospray regimes is suggested. Finally, the effect of the electrospray operating regime on the mass spectrometer signal is briefly summarized.
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