Results 241 to 250 of about 682,349 (297)

Mass spectrometry using electrospray ionization

Nature Reviews Methods Primers, 2023
G. R. D. Prabhu, E. Williams, M. Wilm, P. L. Urban   +3 more
semanticscholar   +1 more source

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

Generating Electrospray Ionization on Ballpoint Tips

Analytical Chemistry, 2016
In this study, we report a simple and economical ballpoint electrospray ionization mass spectrometry (BP-ESI-MS) technique. This combines a small ballpoint tip with a syringe pump for the direct loading and ionization of various samples in different phases (including solution, semisolid, and solid) and allows for additional applications in surface ...
Baocheng, Ji, Bing, Xia, Yuanji, Gao, Fengwei, Ma, Lisheng, Ding, Yan, Zhou   +5 more
openaire   +2 more sources

Electrospray Ionization Mass Spectrometry of Oligonucleotides

Current Protocols in Nucleic Acid Chemistry, 2008
AbstractBecause of the high molecular weights and thermal lability of biomolecules such as nucleic acids and protein, they can be difficult to analyze by mass spectrometry. Such analyses require a “soft” ionization method that is capable of generating intact molecular ions.
Colette M, Castleberry, Lenore P, Rodicio, Patrick A, Limbach   +2 more
openaire   +2 more sources

Electrospray ionization mass spectrometry of ginsenosides

Journal of Mass Spectrometry, 2002
AbstractGinsenosides Rb1, Rb2, Rc, Rd, Re, Rf, Rg1, Rg2 and F11 were studied systematically by electrospray ionization mass spectrometry in positive‐ and negative‐ion modes with a mobile‐phase additive, ammonium acetate. In general, ion sensitivities for the ginsenosides were greater in the negative‐ion mode, but more structural information on the ...
Xiu-Sheng, Miao, Chris D, Metcalfe, Chunyan, Hao, Raymond E, March   +3 more
openaire   +2 more sources

Electrospray-ionization driven by dielectric polarization

Analytical and Bioanalytical Chemistry, 2008
A non-conductive piezo ceramic plate has been used to induce an electric field to generate an electrospray as ionization method for mass spectrometric determination. This technique decreases the risk of undesired discharges, induced by high electric currents. The applicability of the technique is demonstrated and compared with a commercial electrospray
Michael, Schilling, Dirk, Janasek, Joachim, Franzke   +2 more
openaire   +2 more sources

Electrospray Ionization Using Wooden Tips

Analytical Chemistry, 2011
Electrospray ionization (ESI) is a mass spectrometric technique widely used in various fields including chemistry, biology, medicine, pharmaceutical industry, clinical assessment, and forensic science. In this study, we report a simple and economical ESI-mass spectrometry (MS) technique, which makes use of disposable wooden tips (wooden toothpicks) for
Bin, Hu, Pui-Kin, So, Huanwen, Chen, Zhong-Ping, Yao   +3 more
openaire   +2 more sources