Results 11 to 20 of about 20,532,578 (234)
Pursuing drug laboratories: Analysis of drug precursors with High Kinetic Energy Ion Mobility Spectrometry [PDF]
Forensic Science InternationalHigh Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) is a technique for rapid and reliable detection of trace compounds down to ppbV-levels within one second. Compared to classical IMS operating at ambient pressure and providing the ion mobility at low electric fields, HiKE-IMS can also provide the analyte-specific field dependence of the ion ...
Stefan Zimmermann +2 more
exaly +5 more sources
The origin of isomerization of aniline revealed by high kinetic energy ion mobility spectrometry (HiKE-IMS) [PDF]
Physical Chemistry Chemical Physics, 2023 Three ion mobility peaks of 4-fluoroaniline, including the para -protonated and molecular ion species, when measured with a high-kinetic energy ion mobility spectrometer and peak abundances depend only on the ionization settings.
Cameron N. Naylor +3 more
semanticscholar +4 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 +4 more
openaire +3 more sources
Formation of positive product ions from substances with low proton affinity in high kinetic energy ion mobility spectrometry [PDF]
Rapid Communications in Mass Spectrometry, 2021 Rationale Ion mobility spectrometry (IMS) instruments are typically equipped with atmospheric pressure chemical ionization (APCI) sources operated at ambient pressure. However, classical APCI‐IMS suffers from a limited ionization yield for nonpolar substances with low proton affinity (PA).
Maria Allers +4 more
openaire +3 more sources
The European Physical Journal D, 2022 AbstractThe first High Kinetic Energy-Ion Mobility Spectrometry-Mass Spectrometry (HiKE-IMS-MS) studies involving six volatiles (acetone, acetonitrile, methanol, ethanol, 2-propanol, and 1-butanol) and their fully deuterated analogues are reported. The goal is to further our understanding of the ion–molecule chemistry occurring in the HiKE-IMS. This is
Weiss, Florentin +6 more
openaire +4 more sources
Analytical Chemistry, 2014 One major drawback of ion mobility spectrometry (IMS) is the dependence of the response to a certain analyte on the concentration of water or the presence of other compounds in the sample gas. Especially for low proton affine analytes, e.g., benzene, which often exists in mixtures with other volatile organic compounds, such as toluene and xylene (BTX),
Jens, Langejuergen +4 more
openaire +3 more sources
Journal of the American Society for Mass Spectrometry, 2020 Ion mobility spectrometers (IMS) separate ions mainly by ion-neutral collision cross section and to a lesser extent by ion mass and effective temperature.
Ansgar T Kirk +2 more
exaly +2 more sources
Time-Resolved Study of In Situ Generated Protein Subcomplexes by Tandem-Trapped Ion Mobility Spectrometry. [PDF]
J Mass SpectromWe present an advanced analytical strategy that exploits the unique capabilities of tandem-trapped ion mobility spectrometry (Tandem-TIMS) to combine high-resolution ion mobility separation with targeted collisional activation and controlled gas-phase ...
Pedrete T, Bleiholder C, Liu FC.
europepmc +2 more sources
Journal of the American Society for Mass Spectrometry, 2018 Corona discharge ionization sources are often used in ion mobility spectrometers (IMS) when a non-radioactive ion source with high ion currents is required.
Ansgar T Kirk +2 more
exaly +2 more sources