Secondary electrospray ionization proceeds via gas-phase chemical ionization
نویسندگان
چکیده
منابع مشابه
Atmospheric pressure chemical ionization source. 1. Ionization of compounds in the gas phase.
A novel chemical ionization source for organic mass spectrometry is introduced. This new source uses a glow discharge in the flowing afterglow mode for the generation of excited species and ions. The direct-current gas discharge is operated in helium at atmospheric pressure; typical operating voltages and currents are around 500 V and 25 mA, respectively. The species generated by this atmospher...
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Electrospray ionization is today the most widely used ionization technique in chemical and biochemical analysis. Interfaced with a mass spectrometer it allows the investigation of the molecular composition of liquid samples. With electrospray a large variety of chemical substances can be ionized. There is no limitation in mass which thus enables even the investigation of large noncovalent prote...
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A new method of desorption ionization is described and applied to the ionization of various compounds, including peptides and proteins present on metal, polymer, and mineral surfaces. Desorption electrospray ionization (DESI) is carried out by directing electrosprayed charged droplets and ions of solvent onto the surface to be analyzed. The resulting mass spectra are similar to normal ESI mass ...
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The unique capability of secondary electrospray ionization (SESI) as a nonradioactive ionization source to detect analytes in both liquid and gaseous samples was evaluated using aqueous solutions of three common military explosives: cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX), nitroglycerin (NG) and pentaerythritol tetranitrate (PETN). The adducts formed between the compounds and their re...
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The inherent constant-current electrolytic (CCE) nature of electrospray ionization mass spectrometry (ESIMS) is used to study a variety of neutral metallocenes, including oligomeric metallocenes. ESI mass spectra that display the doubly charged ion of certain biferrocenes (M2+) can be readily obtained by careful manipulation of solution conditions and structure of the biferrocene. The intensity...
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ژورنال
عنوان ژورنال: Analytical Methods
سال: 2017
ISSN: 1759-9660,1759-9679
DOI: 10.1039/c7ay01121k