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Electrospray may be used in nanotechnology, [18] for example to deposit single particles on surfaces. This is done by spraying colloids on average containing only one particle per droplet. The solvent evaporates, leaving an aerosol stream of single particles of the desired type.
[48] [49] [50] Electrospray is used for ion formation in a number of ambient ion sources. Desorption electrospray ionization (DESI) is an ambient ionization technique in which a solvent electrospray is directed at a sample. [51] [52] The electrospray is attracted to the surface by applying a voltage to the sample. Sample compounds are extracted ...
Extractive electrospray ionization (EESI) [1] [2] is a spray-type, ambient ionization source [3] [4] [5] [6] [7] in mass spectrometry that uses two colliding aerosols ...
John Bennett Fenn (June 15, 1917 – December 10, 2010) was an American professor of analytical chemistry who was awarded a share of the Nobel Prize in Chemistry in 2002. He shared half of the award with Koichi Tanaka for their work in mass spectrometry.
Secondary electrospray ionization mechanism diagram. In the early days of SESI, two ionization mechanisms were under debate.: the droplet-vapor interaction model postulates that vapors are adsorbed in the electrospray ionization (ESI) droplets, and then reemitted as the droplet shrinks, just as regular liquid phase analytes are produced in electrospray ionization; on the other hand, the ion ...
Laser ablation electrospray ionization (LAESI) is an ambient ionization method for mass spectrometry that combines laser ablation from a mid-infrared (mid-IR) laser with a secondary electrospray ionization (ESI) process. The mid-IR laser is used to generate gas phase particles which are then ionized through interactions with charged droplets ...
Nanospray desorption electrospray ionization (nano-DESI) is an ambient pressure ionization technique used in mass spectrometry (MS) for chemical analysis of organic molecules. [1] In this technique, analytes are desorbed into a liquid bridge formed between two capillaries and the sampling surface. [ 2 ]
The term laser electrospray mass spectrometry has been used to denote the use of a femtosecond laser for ablation. [29] [30] Laser ablation into an electrospray produces highly charged ions that are similar to those observed in direct electrospray. An alternative ionization approach following laser desorption is a plasma.