Results 11 to 20 of about 24,155 (261)

Rapid Characterization of Per- and Polyfluoroalkyl Substances (PFAS) by Ion Mobility Spectrometry-Mass Spectrometry (IMS-MS). [PDF]

Analytical Chemistry, 2020
Per- and polyfluoroalkyl substances (PFAS) are an ensemble of persistent organic pollutants of global interest because of their associations with adverse health outcomes.
J. Dodds, Zachary R. Hopkins, D. Knappe, E. Baker   +3 more
semanticscholar   +3 more sources

Flexible Drift Tube for High Resolution Ion Mobility Spectrometry (Flex-DT-IMS) [PDF]

Analytical Chemistry, 2020
This paper describes, in detail, the development of a novel, low-cost, and flexible drift tube (DT) along with an associated ion mobility spectrometer system.
B. Smith, C. Boisdon, I. Young, Thanit Praneenararat, T. Vilaivan, S. Maher   +5 more
semanticscholar   +3 more sources

Implementation of an Open-Source Multiplexing Ion Gate Control for High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS)

Journal of the American Society for Mass Spectrometry, 2023
With ion mobility spectrometry increasingly used in mass spectrometry to enhance separation by increasing orthogonality, low ion throughput is a challenge for the drift-tube ion mobility experiment. The High Kinetic Energy Ion Mobility Spectrometer (HiKE-
Cameron N. Naylor, B. Clowers, F. Schlottmann, Nic Solle, Stefan Zimmermann   +4 more
semanticscholar   +3 more sources

Laserspray ionization (LSI) ion mobility spectrometry (IMS) mass spectrometry [PDF]

Journal of the American Society for Mass Spectrometry, 2010
A simple device is described for desolvation of highly charged matrix/analyte clusters produced by laser ablation leading to multiply charged ions that are analyzed by ion mobility spectrometry-mass spectrometry. Thus, for example, highly charged ions of ubiquitin and lysozyme are cleanly separated in the gas phase according to size and mass (shape and
Ellen D. Inutan, S. Trimpin
semanticscholar   +3 more sources

Influence of Sample Gas Humidity on Product Ion Formation in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS).

Journal of the American Society for Mass Spectrometry, 2022
High Kinetic Energy Ion Mobility Spectrometers (HiKE-IMS) chemically ionize gaseous samples via reactant ions and separate the generated ions by their motion in a neutral gas under the influence of an electric field.
C. Schaefer, F. Schlottmann, A. Kirk, S. Zimmermann   +3 more
semanticscholar   +3 more sources

Influence of Reduced Field Strength on Product Ion Formation in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS).

Journal of the American Society for Mass Spectrometry, 2021
Classical ion mobility spectrometers (IMS) operated at ambient pressure, often use atmospheric pressure chemical ionization (APCI) sources to ionize organic compounds.
C. Schaefer, Maria Allers, A. Kirk, F. Schlottmann, S. Zimmermann   +4 more
semanticscholar   +3 more sources

Selectivity Beyond Mass: Real-Time Isomer Separation Using SLIM IMS Coupled to PTR-MS. [PDF]

J Mass Spectrom
ABSTRACT Proton‐transfer‐reaction—mass spectrometry (PTR‐MS) provides real‐time analysis of volatile organic compounds (VOCs) relevant to atmospheric research, food and flavor characterization, industrial process control, and medical applications. However, PTR‐MS is inherently limited in its ability to resolve isomers of molecules with the same mass‐to‐
Jordan J, Jordan A, Lindinger C, Hanel G, Fügenschuh T, Beyer MK, Sulzer P.   +6 more
europepmc   +2 more sources

Negative Reactant Ion Formation in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) [PDF]

Journal of the American Society for Mass Spectrometry, 2020
Due to the operation at background pressures between 10-40 mbar and high reduced electric field strengths of up to 120 Td, the ion–molecule reactions in High Kinetic Energy Ion Mobility Spectrometers (HiKE-IMS) differ from those in classical ambient pressure IMS.
Maria Allers, Ansgar T. Kirk, Bennet Timke, Duygu Erdogdu, Walter Wissdorf, Thorsten Benter, Stefan Zimmermann   +6 more
openaire   +2 more sources

Positive Reactant Ion Formation in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) [PDF]

Journal of the American Society for Mass Spectrometry, 2020
In contrast to classical Ion Mobility Spectrometers (IMS) operating at ambient pressure, the High Kinetic Energy Ion Mobility Spectrometer (HiKE-IMS) is operated at reduced pressures of between 10 and 40 mbar and higher reduced electric field strengths of up to 120 Td.
Maria Allers, Ansgar T. Kirk, Manuel Eckermann, Christoph Schaefer, Duygu Erdogdu, Walter Wissdorf, Thorsten Benter, Stefan Zimmermann   +7 more
openaire   +2 more sources

Enhancing Lipidomics With High-Resolution Ion Mobility-Mass Spectrometry. [PDF]

Proteomics
ABSTRACT Lipids, indispensable yet structurally intricate biomolecules, serve as critical regulators of cellular function and disease progression. Conventional lipidomics, constrained by limited resolution for isomeric and low‐abundance species, has been transformed by ion mobility‐mass spectrometry (IM‐MS).
Lu G, Xu S, Huang P, Li L.
europepmc   +2 more sources