Spray mechanism in paper spray ionization

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2012 English Publisher:Elsevier BVJournal:International Journal of Mass Spectrometry, volume 325-327, pages 167-171 (issn: 1387-3806,

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Authors: Ryan D. Espy; Ariel R. Muliadi; Zheng Ouyang; R. Graham Cooks;

doi: 10.1016/j.ijms.2012.06.017

Spray mechanism in paper spray ionization

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Abstract

Abstract Images and droplet size measurements show that paper spray operates in two distinct spray modes. Mode 1 occurs in solvent-rich systems in which multiple Taylor conejets are created producing droplets of a range of sizes. Mode 2 occurs at low solvent flow rates and the higher currents (∼1 uA) suggest a contribution from corona discharge. The latter experiment produces monodispersed droplet sizes. A distinguishing feature of paper spray in both modes is a fixed droplet velocity independent of droplet size.

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