Results 341 to 350 of about 441,409 (379)
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Rapid Communications in Mass Spectrometry, 2017
RationaleAlthough it is claimed that desorption electrospray ionization (DESI) causes less ion suppression effects than electrospray ionization (ESI), a related investigation with quantification measurement of ion suppression effects is absent. Herein, a comparative analysis of ion suppression effects between DESI and ESI was conducted, with the aiming
Zheng Wang, Haijing Zhu, Guangming Huang
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RationaleAlthough it is claimed that desorption electrospray ionization (DESI) causes less ion suppression effects than electrospray ionization (ESI), a related investigation with quantification measurement of ion suppression effects is absent. Herein, a comparative analysis of ion suppression effects between DESI and ESI was conducted, with the aiming
Zheng Wang, Haijing Zhu, Guangming Huang
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Electrospray ionization mass spectrometry of some β‐agonists
Rapid Communications in Mass Spectrometry, 1992AbstractPositive‐ion electrospray spectra of some β‐agonists have been acquired under various ion acceleration conditions. Collisional activation of β‐agonists allows control of their mass spectral patterns, i.e., the molecular ion or several characteristic fragmentations can be favored by changing the energy of the ions extracted into the vacuum ...
Debrauwer, Laurent, Bories, G.
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Electrospray ionization mass spectrometry of biomolecules
Nature, 1990The novel ionization technique of electrospray now allows the convenient mass spectrometric analysis of proteins and other biological molecules directly from liquids The molecular weights of protein can be determined to better than 0.01 per cent mass accuracy.
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Journal of Chromatography A, 1998
Metal speciation was carried out by on-line hyphenation of capillary electrophoresis (CE) with mass spectrometry (MS) via an electrospray ionization (ESI) interface. The commercially available interface was hardly able to produce stable electrospray conditions over an extended period of time, mainly caused by an insufficient positioning of the CE ...
O. Schramel, A. Kettrup, B. Michalke
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Metal speciation was carried out by on-line hyphenation of capillary electrophoresis (CE) with mass spectrometry (MS) via an electrospray ionization (ESI) interface. The commercially available interface was hardly able to produce stable electrospray conditions over an extended period of time, mainly caused by an insufficient positioning of the CE ...
O. Schramel, A. Kettrup, B. Michalke
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Analytical Chemistry, 2002
To better detect and identify beeswax in ancient organic residues from archaeological remains, we developed a new analytical methodology consisting of the analysis of (i) the trimethylsilylated organic extract by GC/MS and (ii) the crude extract by ESI-MS.
B. Garnier, Nicolas +3 more
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To better detect and identify beeswax in ancient organic residues from archaeological remains, we developed a new analytical methodology consisting of the analysis of (i) the trimethylsilylated organic extract by GC/MS and (ii) the crude extract by ESI-MS.
B. Garnier, Nicolas +3 more
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Electrospray Ionization Tandem Mass Spectrometry of Phosphonate Peptides
European Journal of Mass Spectrometry, 2010Phosphonate peptides were synthesized and investigated by positive ion electrospray ionization mass spectrometry in conjunction with tandem mass spectrometry. It was found that, for the sodiated adduct, there were two rearrangement reactions. In path A, there was C–C covalent bond cleavage with consecutive migration of a hydrogen atom to lose the ...
Zheng, Z. Y. +6 more
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Capillary electrophoresis-electrospray ionization-mass spectrometry
Journal of Chromatography A, 1989Abstract New developments are described in the area of capillary electrophoresis combined with electrospray ionization-mass spectrometry (CE—ESI-MSD), a promising new method for the separation and mass spectrometric characterization of labile, polar or ionic constituents of biological mixtures.
Charles G. Edmonds +4 more
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New developments in biochemical mass spectrometry: electrospray ionization
Analytical Chemistry, 1990The principles, development, and recent application of electrospray ionization-mass spectrometry (ESI-MS) to biological compounds are reviewed. ESI-MS methods now allow determination of accurate molecular weights for proteins extending to over 50,000, and in some cases well over 100,000.
Joseph A. Loo +4 more
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Some tenets pertaining to electrospray ionization mass spectrometry
Journal of Mass Spectrometry, 2000The field of electrospray ionization mass spectrometry is reviewed with emphasis placed upon advances in the elucidation of fundamental mechanistic aspects of the ionization process that have been reported over the past 10 years. The analytical consequences of these findings are also examined.
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Electrospray ionization with Fourier transform mass spectrometry
TrAC Trends in Analytical Chemistry, 1994Abstract Electrospray ionization (ESI) has become widely used to solve problems in many diverse areas of chemistry and biochemistry. In combination with Fourier transform mass spectrometry (FTMS), even more chemical information can be obtained from trace quantities of complex samples, including those present in mixtures.
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