Electron Ionization Last updated Save as PDF Page ID40048 Contributed by Gamini GunawardenaAssociate Professor (Chemistry) at Utah Valley University Electron ionization (symbol: EI) is a mass-spectroscopic technique in which a high-energy electron is used to remove an electron from the sample molecule. eg: see also chemical ionization Contributors and Attributions Gamini Gunawardena from the OChemPal site (Utah Valley University)
