ABSTRACT
Mass spectrometry works in several steps. A molecule is first ionized, in this chapter electron-ionization mass spectrometry (EI-MS) will be the only method considered. The ionized molecule then flies towards a detector where its mass-to-charge quotient is measured. During the time between ionization and detection the molecular ion can also fragment, and these fragments can also be detected. Together, EI-MS allows chemists to help predict and or verify the structure of a molecule.
