Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. physicochemical processes
6. ionization

Anotations

Scope note:

Technique developed by John Fenn in the late 1980s, an improved method of ionizing samples for use in mass spectrometry. Electrospray ionization (ESI) discharges a solution of a sample into an electric field that disperses the sample as fine droplets. ESI is especially useful for samples containing macromolecules, prone to fragmenting in other techniques of ionization.