Results 1 to 10 of about 229,222 (210)
Transmission mode desorption electrospray ionization [PDF]
Journal of the American Society for Mass Spectrometry, 2008 A new mode of operation for desorption electrospray ionization (DESI) analysis of liquids or solid residues from evaporated solvents is presented. Unlike traditional DESI, the electrospray is not deflected off of a surface but instead is transmitted through a sampling mesh at a 0 degrees angle between the electrospray tip, sample mesh, and capillary ...
Jennifer S Brodbelt
exaly +3 more sources
Some Thoughts on Electrospray Ionization Mechanisms
European Journal of Mass Spectrometry, 2011 Electrospray ionization (ESI) mechanisms are highly complex, due to a series of physical and chemical phenomena taking place on a complex system, as a solution is. In fact, even if the solution of an analyte in a protic medium can be considered at first sight to be a two-component system, the presence of solvent dissociation equilibria and the ...
Sara Crotti +2 more
exaly +5 more sources
Comparison of Mass Spectrometry Imaging by Desorption Electrospray Ionization (DESI) and Desorption Electro-Flow Focusing Ionization (DEFFI) [PDF]
MetabolitesBackground: Among atmospheric-pressure mass spectrometry imaging (MSI) methods, desorption electrospray ionization (DESI) and desorption electro-flow focusing ionization (DEFFI) represent cost-effective, high-throughput approaches that utilize ...
Yunshuo Tian +3 more
doaj +2 more sources
Nanobubbles in Electrospray Ionization Mass Spectrometry [PDF]
Analytical ChemistryNanobubbles (NBs) are very small gas-filled cavities in solvents, and when their sizes reach diameters around 200 nm, they remain in solution for extended periods of time, featuring special chemical and physical properties. Here, we investigate the application of NBs in electrospray ionization.
George Joseph +2 more
openaire +3 more sources
A:Recent advances in ambient electrospray ionization technologies [PDF]
Records of Pharmaceutical & Biomedical Sciences, 2020 Mass spectrometry is one of the most powerful techniques for detection and identification. Due to its sensitivity and selectivity, exact mass of analytes, and in effect, their relative fragments, allow for total structure information.
Sara Amer +6 more
doaj +1 more source
Frontiers in Pharmacology, 2023 Extraction electrospray ionization mass spectrometry (EESI-MS), due to the unique configuration of its ionization module, enables the effective ionization of trace molecules of interest in samples containing complex matrices with high sensitivity, high ...
Manman Qin +9 more
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Metabolites, 2021 Mass spectrometry imaging is a powerful tool to analyze a large number of metabolites with their spatial coordinates collected throughout the sample. However, the significant differences in ionization efficiency pose a big challenge to metabolomic mass ...
Ying Xi, David C. Muddiman
doaj +1 more source
Efficiency of nano-electrospray ionization [PDF]
Journal of the American Society for Mass Spectrometry, 2005 The efficiency of nano-electrospray ionization, defined as the flux of ions reaching the detector of a triple-quadrupole mass spectrometer divided by the flux of analyte ions leaving the needle, has been measured in a series of controlled experiments with dodecyltrimethyl ammonium (DDTMA) bromide, myoglobin, Glu- [1]-fibrinopeptide, and gramicidin S ...
El-Faramawy, Ayman +2 more
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Research Progress of Highly Selective Solid Substrate Electrospray Ionization Sources for Mass Spectrometry [PDF]
Zhipu Xuebao, 2022 Solid substrate electrospray mass spectrometry is an ambient mass spectrometry method that involves carrying, ionization and detection of the samples. This approach has a wide range of applications, and which is appropriate for rapid mass spectrometric ...
ZHANG Feng;MU Guo-dong;LIU Tong
doaj
Development and Performance Test of Enclosed Extractive Electrospray Ionization Device [PDF]
Zhipu Xuebao, 2023 Extractive electrospray ionization (EESI) technology has the advantages of directly ionizing the target molecules in the samples without complex sample pretreatments, and it is widely used for analysis of complex matrix samples, especially for aerosol ...
DONG Xiao-feng1 +4 more
doaj +1 more source