Results 161 to 170 of about 229,222 (210)

On the Mechanism of Extractive Electrospray Ionization

Analytical Chemistry, 2010
Extractive electrospray ionization (EESI) is a powerful ambient ionization technique that can provide comprehensive mass spectrometric (MS) information on aerosols, complex liquids, or suspensions without any sample pretreatment. An understanding of the EESI mechanism is critical for defining its range of application, the advantages, and limitations of
Law WS, Wang R, Hu B, Berchtold C, Meier L, Chen H, Zenobi R   +6 more
openaire   +3 more sources

Unraveling the Mechanism of Electrospray Ionization

Analytical Chemistry, 2012
Electrospray ionization (ESI) generates intact gas-phase ions from analytes in solution for mass spectrometric investigations. ESI can proceed via different mechanisms. Low molecular weight analytes follow the ion evaporation model (IEM), whereas the charged residue model (CRM) applies to large globular species.
Lars, Konermann, Elias, Ahadi, Antony D, Rodriguez, Siavash, Vahidi   +3 more
openaire   +2 more sources

Ion suppression effect in desorption electrospray ionization and electrospray ionization mass spectrometry

Rapid Communications in Mass Spectrometry, 2017
Rationale Although 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.
Zheng Wang, Haijing Zhu, Guangming Huang
openaire   +2 more sources

Probe Electrospray Ionization

2014
Probe electrospray ionization (PESI) is an electrospray-based atmospheric-pressure surface sampling and ionization technique for mass spectrometry that uses a solid needle instead of a capillary. While ionization occurs in a fashion similar to that involved in electrospray ionization, the novel aspect of PESI is discontinuous sampling.
Mridul Kanti Mandal, Kenzo Hiraoka
openaire   +1 more source

Incorporation of a Venturi Device in Electrospray Ionization

Analytical Chemistry, 2003
Electrospray ionization has grown to be one of the most commonly used ionization techniques for mass spectrometry, and efforts continue to improve its performance. Typically, the sprayer tip must be very close to the entrance orifice of the mass spectrometer in order to maximize the conduction of ions from the sprayer into the mass spectrometer ...
Li, Zhou, Bingfang, Yue, David V, Dearden, Edgar D, Lee, Alan L, Rockwood, Milton L, Lee   +5 more
openaire   +2 more sources

Desorption electrospray ionization of aerosol particles

Rapid Communications in Mass Spectrometry, 2007
Abstract We have applied desorption electrospray ionization to aerosol particles. Ions were formed from aerosols by merging suspended dry particles with an electrospray of solvent in a modified ion trap mass spectrometer. Dry aerosol particles were generated using a fluidized bed powder disperser and directed toward the inlet of the ...
Jianan, Dong, Yohannes H, Rezenom, Kermit K, Murray   +2 more
openaire   +2 more sources

Internal energy distribution in electrospray ionization

Journal of Mass Spectrometry, 2004
AbstractInternal energies and energy distributions were studied using the ‘survival yield’ method developed previously. In addition to conventional benzylpyridinium salts, protonated esters (fragmenting by rearrangement) and protonated leucine enkephalin were also used, extending the validity of the technique.
Naban-Maillet, J., Lesage, D., Bossee, A., Gimbert, Y., Sztaray, J., Vekey, K., Tabet, J.-C.   +6 more
openaire   +3 more sources

The Charging of Micellar Nanoparticles in Electrospray Ionization

ChemPhysChem, 2013
AbstractCharging of nanoparticles through electrospray has scarcely been explored. Spherical nanometer‐sized amphiphilic block copolymer nanoparticles with diameters ranging from ∼65 to ∼150 nm were electrosprayed and analysed by charge detection spectrometry. Herein, we explore the charging of these micellar nano‐objects by conducting a thorough study
Tristan, Doussineau, Marion, Santacreu, Rodolphe, Antoine, Philippe, Dugourd, Wenjing, Zhang, Isabelle, Chaduc, Muriel, Lansalot, Franck, D'Agosto, Bernadette, Charleux   +8 more
openaire   +2 more sources

Electrospray ionization source with a rear extractor

Journal of Mass Spectrometry, 2018
AbstractA new electrospray source design is introduced by having an extractor electrode placed at 1 to 2 mm behind the emitter tip. The extractor was integrated into the sprayer body as a single device. An insulating tube was used to isolate the emitter from the extractor and to deliver the sheath gas for the electrospray.
Lee Chuin Chen, Satoru Tsutsui, Tsubasa Naito, Satoshi Ninomiya, Kenzo Hiraoka   +4 more
openaire   +2 more sources

Spray Mechanism of Contained-Electrospray Ionization

Journal of the American Society for Mass Spectrometry, 2020
Analytical characteristics of contained electrospray ionization (ESI) are summarized in terms of its potential to modify the analyte solution during the stages of droplet formation to provide opportunities to generate native versus denatured biomolecular gas-phase ions, without the need for bulk-phase analyte modifications.
Colbert F. Miller, Benjamin J. Burris, Abraham K. Badu-Tawiah   +2 more
openaire   +2 more sources