Ionization
121Electron ionization — [ toluene [http://webbook.nist.gov/cgi/cbook.cgi?Name=toluene Units=SI] ] Electron ionization (EI, formerly known as electron impact) is an ionization technique widely used in mass spectrometry, particularly for organic molecules. How it worksThe …
122Tunnel ionization — is a process in which electrons in an atom (or a molecule) pass through the potential barrier and escape from the atom (or molecule). In an intense electric field, the potential barrier of an atom (molecule) is distorted drastically. Therefore,… …
123Degree of ionization — A plasma lamp, illustrating a low degree of ionization (i.e. a partially ionized gas) The degree of ionization refers to the proportion of neutral particles, such as those in a gas or aqueous solution, that are ionized into charged particles. A… …
124Sonic spray ionization — (SSI) is method for creating ions from a liquid solution, for example, a mixture of methanol and water. A pneumatic nebulizer is used to turn the solution into a supersonic spray of small droplets. Ions are formed when the solvent evaporates and… …
125Atmospheric pressure chemical ionization — Infobox chemical analysis name = Atmospheric pressure chemical ionization caption =Atmospheric pressure chemical ionization interface acronym = APCI classification =Mass spectrometry analytes = Organic molecules Biomolecules related = Chemical… …
126Chemi-ionization — Not to be confused with chemical ionization. Chemi ionization is the formation of an ion through the reaction of a gas phase atom or molecule with an atom or molecule in an excited state.[1][2] Reactions Chemi ionization can be represented by… …
127Self-ionization of water — The self ionization of water (also autoionization of water, and autodissociation of water) is the chemical reaction in which two water molecules react to produce a hydronium (H3O+) and a hydroxide ion (OH−):: 2 H2O (l) ightleftharpoons H3O+ (aq)… …
128Surface-enhanced laser desorption/ionization — Infobox chemical analysis name = Surface enhanced laser desorption/ionization caption = acronym = SELDI classification = analytes = Biomolecules manufacturers = related = Matrix assisted laser desorption/ionization Soft laser desorption… …
