Results 21 to 30 of about 41,261 (264)

Orthogonal extraction ion mobility spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2006
Ion Mobility Spectrometry is a powerful tool for the study of molecular conformations, separation of mass isomers, and analysis of complex mixtures and suppression of chemical background. The factors that limit the capabilities of the technique include its relatively low resolving power and duty cycle.
openaire   +2 more sources

Fundamentals of ion mobility spectrometry [PDF]

open access: yesCurrent Opinion in Chemical Biology, 2018
Fundamental questions in ion mobility spectrometry have practical implications for analytical applications in general, and omics in particular, in three respects. (1) Understanding how ion mobility and collision cross section values depend on the collision gas, on the electric field and on temperature is crucial to ascertain their transferability ...
Gabelica, Valérie, Marklund, Erik
openaire   +5 more sources

Pulsed electron beams in ion mobility spectrometry

open access: yesReviews in Analytical Chemistry, 2012
Ion mobility spectrometry is a well-known technique used to analyze trace gases in ambient air. Typically, it works by employing a radioactive source to provide electrons with high energy to ionize the analytes in a series of chemical reactions.
Baether Wolfgang   +2 more
doaj   +1 more source

Recent Advances in Small Molecule Metabolites Analysis by Ion Mobility-Mass Spectrometry [PDF]

open access: yesZhipu Xuebao, 2022
Recently, different types of ion mobility techniques have sprung up. Combined with mass spectrometry, the utility of ion mobility spectrometry has been enhanced in metabolomics, natural products, characterization of supramolecular materials, and other ...
LIU Juan1,2   +4 more
doaj   +1 more source

Electrospray Quadrupole Travelling Wave Ion Mobility Time-of-Flight Mass Spectrometry for the Detection of Plasma Metabolome Changes Caused by Xanthohumol in Obese Zucker (fa/fa) Rats

open access: yesMetabolites, 2013
This study reports on the use of traveling wave ion mobility quadrupole time-of-flight (ToF) mass spectrometry for plasma metabolomics. Plasma metabolite profiles of obese Zucker fa/fa rats were obtained after the administration of different oral doses ...
Claudia S. Maier   +8 more
doaj   +1 more source

Ion mobility spectrometry of N-methylimidazole and possibilities of its determination

open access: yesТонкие химические технологии, 2022
Objectives. To determine the ion mobility of N-methylimidazole, establish the structure of ions corresponding to characteristic signals, and determine the detection limit of N-methylimidazole on the ion-drift detector Kerber.Methods.
D. A. Aleksandrova   +9 more
doaj   +1 more source

Quantification of Volatile Acetone Oligomers Using Ion-Mobility Spectrometry

open access: yesJournal of Analytical Methods in Chemistry, 2021
Background. Volatile acetone is a potential biomarker that is elevated in various disease states. Measuring acetone in exhaled breath is complicated by the fact that the molecule might be present as both monomers and dimers, but in inconsistent ratios ...
Tobias Hüppe   +5 more
doaj   +1 more source

Hadamard Transform Ion Mobility Spectrometry Based on Matrix Encoding Modulation

open access: yesSensors, 2023
Ion mobility spectrometry (IMS) has been widely used for the on-site detection of trace chemicals, but continue to suffer from a low duty cycle of ion injection.
Ke Chen, Lingfeng Li, Peng Li
doaj   +1 more source

Online Scent Classification by Ion-Mobility Spectrometry Sequences

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
For ion-mobility spectrometry (IMS)-based electronic noses (eNose) samples of scents are markedly time-dependent, with a transient phase and a highly volatile stable phase in certain conditions.
Philipp Müller   +10 more
doaj   +1 more source

Right in two: capabilities of ion mobility spectrometry for untargeted metabolomics

open access: yesFrontiers in Molecular Biosciences, 2023
This mini review focuses on the opportunities provided by current and emerging separation techniques for mass spectrometry metabolomics. The purpose of separation technologies in metabolomics is primarily to reduce complexity of the heterogeneous systems
Tessa Moses, Karl Burgess
doaj   +1 more source

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