Electrospray ionization

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Electrospray ionization , ESI
Spray ionization process in which either cations or anions in solution are transferred to the gas phase via formation and desolvation at atmospheric pressure of a stream of highly charged droplets that result from applying a potential difference between the tip of the electrospray needle containing the solution and a counter electrode.
Note: When a pressurized gas is used to aid in the formation of a stable spray, the term pneumatically assisted electrospray ionization is used. The term ionspray is deprecated unless describing the commercial product.
Related Term(s):

J. B. Fenn, M. Mann, C. K. Meng, S. F. Wong, C. M. Whitehouse. Science 246, 64 (1989). (http://dx.doi.org/10.1126/science.2675315 )

M. Dole, L. L. Mack, R. L. Hines, R. C. Mobley, L. D. Ferguson, M. B. Alice. J. Chem. Phys. 49, 2240 (1968). (http://dx.doi.org/10.1063/1.1670391 )


From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

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