Ad
related to: how does electrospray work in chemistry practice
Search results
Results from the WOW.Com Content Network
The electrospray ionization technique was first reported by Masamichi Yamashita and John Fenn in 1984, [3] and independently by Lidia Gall and co-workers in Soviet Union, also in 1984. [4] Gall's work was not recognised or translated in the western scientific literature until a translation was published in 2008. [4]
In 1914, John Zeleny published work on the behaviour of fluid droplets at the end of glass capillaries. [5] This report presents experimental evidence for several electrospray operating regimes (dripping, burst, pulsating, and cone-jet). [6] A few years later, Zeleny captured the first time-lapse images of the dynamic liquid meniscus. [7]
Desorption electrospray ionization (DESI) is an ambient ionization technique that can be coupled to mass spectrometry (MS) for chemical analysis of samples at atmospheric conditions. Coupled ionization sources-MS systems are popular in chemical analysis because the individual capabilities of various sources combined with different MS systems ...
Ambient ionization techniques are attractive for many samples for their high tolerance to complex mixtures and for fast testing. EESI has been employed for the rapid characterization of living objects, [10] native proteins, [11] and metabolic biomarkers.
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 ...
ESTASI is a contactless process based on capacitive coupling. One advantage of ESTASI is, that the electrode and sample droplet act contact-less avoiding thereby any oxidation or reduction of the sample compounds at the electrode surface, which often happens during standard electrospray ionization (ESI). [2]
Probe electrospray ionization is an ambient ionization mass spectrometry technique developed by Kenzo Hiraoka et al. at the University of Yamanashi, Japan. [4] The technique was developed to address some of the issues associated with traditional electrospray ionization (ESI), including clogging of the capillary and contamination, whilst providing a means of rapid and direct sample analysis.
Molecular ion beam deposition employs electrospray ionization or MALDI sources. [3] The ions are then accelerated, focused or deflected using high voltages or magnetic fields. Optional deceleration at the substrate can be employed to define the deposition energy. This energy usually ranges from a few eV up to a few keV. [3]
Ad
related to: how does electrospray work in chemistry practice