Results 21 to 30 of about 24,155 (261)

Targeted glucocorticoid analysis using ion mobility-mass spectrometry (IM-MS)

Journal of Mass Spectrometry and Advances in the Clinical Lab, 2022
Ion mobility-mass spectrometry (IM-MS) is an emerging technique in the -omics fields that has broad potential applicability to the clinical lab. As a rapid, gas-phase structure-based separation technique, IM-MS offers promise in isomer separations and can be easily combined with existing LC-MS methods (i.e., LC-IM-MS).
Shon P. Neal, Katie M. Wilson, Diana C. Velosa, Christopher D. Chouinard   +3 more
openaire   +3 more sources

High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) at 40 mbar [PDF]

Journal of the American Society for Mass Spectrometry, 2020
High Kinetic Energy Ion Mobility Spectrometers (HiKE-IMS) are usually operated at an absolute pressure of 20 mbar reaching high reduced electric field strengths of up to 125 Td for controlled reaction kinetics. This significantly increases the linear range and limits chemical cross sensitivities.
Florian Schlottmann, Ansgar T. Kirk, Maria Allers, Alexander Bohnhorst, Stefan Zimmermann   +4 more
openaire   +2 more sources

Separation of different ion structures in atmospheric pressure photoionization-ion mobility spectrometry-mass spectrometry (APPI-IMS-MS) [PDF]

Journal of the American Society for Mass Spectrometry, 2010
This study demonstrates how positive ion atmospheric pressure photoionization-ion mobility spectrometry-mass spectrometry (APPI-IMS-MS) can be used to produce different ionic forms of an analyte and how these can be separated. When hexane:toluene (9:1) is used as a solvent, 2,6-di-tert-butylpyridine (2,6-DtBPyr) and 2,6-di-tert-4-methylpyridine (2,6 ...
Laakia, Jaakko, Adamov, Alexey, Jussila, Matti, Pedersen, Christian S., Sysoev, Alexey A., Kotiaho, Tapio   +5 more
openaire   +2 more sources

On-line analysis of coffee roasting with ion mobility spectrometry–mass spectrometry (IMS–MS)

International Journal of Mass Spectrometry, 2018
Online analysis of coffee roasting was performed using ion mobility spectrometry–mass spectrometry (IMS-MS) with corona discharge ionization. This is the first time that formation of volatile organic compounds (VOCs) during coffee roasting was monitored not only in positive but also in negative ion mode, and not only with mass spectrometry, but also ...
Alexia N. Gloess, C. Yeretzian, R. Knochenmuss, M. Groessl   +3 more
semanticscholar   +2 more sources

The detection of wound infection by ion mobility chemical analysis [PDF]

, 2020
Surgical site infection represents a large burden of care in the National Health Service. Current methods for diagnosis include a subjective clinical assessment and wound swab culture that may take several days to return a result.
Bechar, Janak, Covington, James A., Daulton, Emma, Hardwicke, Joseph, Wicaksono, Alfian   +4 more
core   +1 more source

Sensing Precursors of Illegal Drugs—Rapid Detection of Acetic Anhydride Vapors at Trace Levels Using Photoionization Detection and Ion Mobility Spectrometry

Molecules, 2020
Sensitive real-time detection of vapors produced by the precursors, reagents and solvents used in the illegal drugs manufacture represents a priority nowadays.
Victor Bocos-Bintintan, George-Bogdan Ghira, Mircea Anton, Aurel-Vasile Martiniuc, Ileana-Andreea Ratiu   +4 more
doaj   +1 more source

Collision Cross Section Prediction with Molecular Fingerprint Using Machine Learning

Molecules, 2022
High-resolution mass spectrometry is a promising technique in non-target screening (NTS) to monitor contaminants of emerging concern in complex samples. Current chemical identification strategies in NTS experiments typically depend on spectral libraries,
Fan Yang, Denice van Herwerden, Hugues Preud’homme, Saer Samanipour   +3 more
doaj   +1 more source

Shotgun ion mobility mass spectrometry sequencing of heparan sulfate saccharides [PDF]

, 2020
Despite evident regulatory roles of heparan sulfate (HS) saccharides in numerous biological processes, definitive information on the bioactive sequences of these polymers is lacking, with only a handful of natural structures sequenced to date.
Grabarics, Márkó, Guimond, Scott E., Hofmann, Johanna, Manz, Christian, Miller, Rebecca L., Pagel, Kevin, Schwörer, Ralf, Tyler, Peter C., Xu, Yongmei [u.v.m.], Zubkova, Olga V.   +9 more
core   +1 more source

Fast Sensing of Hydrogen Cyanide (HCN) Vapors Using a Hand-Held Ion Mobility Spectrometer with Nonradioactive Ionization Source

Sensors, 2021
Sensitive real-time detection of vapors produced by toxic industrial chemicals (TICs) always represents a stringent priority. Hydrogen cyanide (HCN) is definitely a TIC, being widely used in various industries and as an insecticide; it is a reactive ...
Victor Bocos-Bintintan, Ileana Andreea Ratiu   +1 more
doaj   +1 more source

Can ion mobility mass spectrometry and density functional theory help elucidate protonation sites in 'small' molecules? [PDF]

, 2013
Ion mobility spectrometry-mass spectrometry (IMS-MS) offers an opportunity to combine measurements and/or calculations of the collision cross-sections and subsequent mass spectra with computational modelling in order to derive the three-dimensional ...
Chowdhry, Babur Z., Dines, Trevor J., Lapthorn, Cris, Perkins, George L., Pullen, Frank S.   +4 more
core   +1 more source