Results 291 to 300 of about 260,257 (350)

Charge Reduction Electrospray Mass Spectrometry

Analytical Chemistry, 1999
A new mass spectrometric technique, charge reduction electrospray mass spectrometry (CREMS), allowing the analysis of complex mixtures of biological molecules is described. The charge state of ions produced by electrospray ionization may be reduced in a controlled manner to yield predominantly singly charged ions through reactions with bipolar (i.e ...
M, Scalf, M S, Westphall, L M, Smith
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Electrospray mass spectrometry of phospholipids

Mass Spectrometry Reviews, 2003
Abstract  I. Introduction 332 II. Techniques and Methods 334 A.  Sample Preparation 334 B.  ESI‐MS/MS 336     1.  Glycerophosphocholine (GPCho) Lipids 336     2.  Sphingomyelin 341     3.  Glycerophosphoethanolamine (GPEtn) Lipids 342     4.  Glycerophosphatidic Acid (GPA) Lipids 344     5.
Melissa, Pulfer, Robert C, Murphy
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Pulsed Electrospray for Mass Spectrometry

Analytical Chemistry, 2001
Pulsed electrospray has been developed and been reported for the first time. This new technique is based on the principle of pulsed ion sources, combined with the conventional electrospray. The pulsed ion spray was realized by a homemade pulsed HV circuit and was monitored by a digital microscope and an oscilloscope.
Y, Lu, T F, Zhou, T W, Shui, T L, Bian, T Y, Guo, P, Yang   +5 more
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Multichannel Microchip Electrospray Mass Spectrometry

Analytical Chemistry, 1997
Microfabricated multiple-channel glass chips were successfully interfaced to an electrospray ionization mass spectrometer (ESI-MS). The microchip device was fabricated by standard photolithographic, wet chemical etching, and thermal bonding procedures.
Q, Xue, F, Foret, Y M, Dunayevskiy, P M, Zavracky, N E, McGruer, B L, Karger   +5 more
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Electrospray Ionization Ion Mobility Mass Spectrometry

Critical Reviews in Analytical Chemistry, 2021
Electrospray ionization ion mobility mass spectrometry (ESI-IMS-MS) is a rapidly progressing analytical technique for the examination of complex compounds in the gas phase. ESI-IMS-MS separates isomers, provides structural information, and quantitatively identifies peptides, lipids, carbohydrates, polymers, and metabolites in biological samples.
Katie M. Kohoutek, Peter de B. Harrington   +1 more
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Arc-Induced Electrospray Ionization Mass Spectrometry

Analytical Chemistry, 2023
Arc-induced electrospray ionization mass spectrometry (AESI-MS) was developed during which alternating current electrospray is simply achieved through the arc plasma. The AESI source exploits the arc's temperature and charge properties to generate aerosols consisting of charged microdroplets.
Kaineng Huang, Hui Zeng, Xingyue Li, Xiaoting Li, Yuanjiang Pan, Yuanji Gao   +5 more
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Electrospray mass spectrometry of

Journal of the American Society for Mass Spectrometry, 2000
There has been a substantial growth in the application of mass spectrometry (MS) methods for the analysis of inorganic materials, due to the inherent sensitivity of mass spectrometry ionization to the specific composition and structure of the analyzed materials.
Jean-Jacques Gaumet, Geoffrey F. Strouse
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Desorption Electrospray Mass Spectrometry

2014
This chapter encompasses applications, fundamentals, instrumentation and future perspectives of desorption electrospray ionization (DESI) mass spectrometry (MS). Since it was first reported in 2004, DESI has paved the way for the development of ambient ionization MS with a wide variety of applications ranging from the analysis of pharmaceutical and ...
Joshua S. Wiley, Zoltan Takats, Zheng Ouyang, R. Graham Cooks   +3 more
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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
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Electrospray tandem mass spectrometry of lexitropsins

Rapid Communications in Mass Spectrometry, 2001
Abstract Several compounds, representative of the class of lexitropsins, were analyzed by electrospray tandem mass spectrometry. The study of the fragmentations of the protonated molecular species ([M + H] + ) and of selected fragment ions allowed proposals for the main ...
M R, Domingues, P, Domingues, M, Gajewski, L, Czuchajowski, A J, Ferrer-Correia   +4 more
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