Results 31 to 40 of about 2,450,645 (310)

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

Recommendations for Reporting Ion Mobility Mass Spectrometry Measurements [PDF]

open access: yes, 2018
Here we present a guide on ion mobility mass spectrometry experiments, which covers both linear and nonlinear methods: what is measured, how the measurements are done, and how to report the results, including the uncertainties on mobility and collision ...
Iain, D. G. Campuzano   +33 more
core   +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

OC-163 identification of inflammatory bowel disease (IBD) using field asymmetric ion mobility spectrometry (FAIMS) [PDF]

open access: yes, 2012
Introduction Resident colonic bacteria, principally anaerobes and firmicutes, ferment undigested fibre. The resultant volatile organic compounds (VOCs) formed are dissolved in the faeces but also absorbed and excreted in the urine.
Thomas, M. G.   +7 more
core   +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

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

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

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

Biomolecule Analysis by Ion Mobility Spectrometry [PDF]

open access: yesAnnual Review of Analytical Chemistry, 2008
Although nonnative protein conformations, including intermediates along the folding pathway and kinetically trapped misfolded species that disfavor the native state, are rarely isolated in the solution phase, they are often stable in the gas phase, where macromolecular ions from electrospray ionization can exist in varying charge states. Differences in
Brian C, Bohrer   +4 more
openaire   +2 more sources

Mass spectrometry of alkylbenzenes and related compounds. Part I. Gas-phase ion chemistry of alkylbenzene radical cations [PDF]

open access: yes, 1990
Kuck D. Mass spectrometry of alkylbenzenes and related compounds. Part I. Gas-phase ion chemistry of alkylbenzene radical cations. Mass Spectrometry Reviews.
Dietmar Kuck, Kuck, Dietmar
core   +1 more source

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