Results 211 to 220 of about 130,342 (267)

Correlation ion mobility spectrometry

The Analyst, 2017
Using a linearly swept chirp function to modulate a Bradbury–Nielsen (BN) ion gate and application of a common signal processing technique (cross-correlation), we outline a method for obtaining high resolution IMS–MS spectra with ion gate duty cycles approaching 50%.
Austen L. Davis, Wenjie Liu, William F. Siems, Brian H. Clowers   +3 more
openaire   +2 more sources

Fourier Deconvolution Ion Mobility Spectrometry

Talanta, 2022
Multiplexing the ion packet injection with advanced signal processing is an effective method to improve both the ion throughput and signal-to-noise ratio for ion mobility spectrometry. Generally used multiplexing methods include Hadamard transform ion mobility spectrometry (HT-IMS), Fourier transform ion mobility spectrometry (FT-IMS), and correlation ...
Wenyan Hu, Qingyan Meng, Ying Lu, Yanfeng Xu, Okonkwo Juliet Nwadiuso, Jianna Yu, Wen Liu, Guoxing Jing, Wenshan Li, Wenjie Liu   +9 more
openaire   +2 more sources

A Tandem Ion Trap/Ion Mobility Spectrometer

Analytical Chemistry, 2000
A tandem quadrupole ion trap/ion mobility spectrometer (QIT/IMS) has been constructed for structural analysis based on the gas-phase mobilities of mass-selected ions. The instrument combines the ion accumulation, manipulation, and mass-selection capabilities of a modified ion trap mass spectrometer with gas-phase electrophoretic separation in a custom ...
, Creaser, , Benyezzar, , Griffiths, , Stygall   +3 more
openaire   +2 more sources

Mobile Ions in Composite Solids

Chemical Reviews, 2020
Fast ion conduction in solid-state matrices constitutes the foundation for a wide spectrum of electrochemical systems that use solid electrolytes (SEs), examples of which include solid-state batteries (SSBs), solid oxide fuel cells (SOFCs), and diversified gas sensors.
Zheyi Zou, Yajie Li, Ziheng Lu, Da Wang, Yanhua Cui, Bingkun Guo, Yuanji Li, Xinmiao Liang, Jiwen Feng, Hong Li, Ce-Wen Nan, Michel Armand, Liquan Chen, Kang Xu, Siqi Shi   +14 more
openaire   +2 more sources

Ion mobility scanning ion chamber

IEE Proceedings A Science, Measurement and Technology, 1993
An aspirated ion chamber measuring from natural atmospheric ion levels of 400 × 106 ions/m3 to 1.6 × 1012 ions/m3 over a mobility range of 2.77 to 0.004 × 10−4 m2/Vs which has been proven for field use, is described.
openaire   +1 more source

Hadamard Transform Ion Mobility Spectrometry

Analytical Chemistry, 2006
A detection scheme that makes use of the Hadamard transform has been employed with an atmospheric-pressure ion mobility spectrometer fitted with an electrospray ionization source. The Hadamard transform was implemented through the use of a linear-feedback shift register to produce a pseudorandom sequence of 1023 points.
Andrew W, Szumlas, Steven J, Ray, Gary M, Hieftje   +2 more
openaire   +2 more sources

Hadamard Transform Ion Mobility Spectrometry

Analytical Chemistry, 2005
Traditionally, the spectrum acquired using ion mobility spectrometry (IMS) is an average of multiple experimental cycles. Each cycle is initiated by passing a short burst of ions into a drift tube containing a homogeneous electric field. Prior to starting the subsequent cycle, all ions in the system must arrive at the detector or spectral overlap may ...
Brian H, Clowers, William F, Siems, Herbert H, Hill, Steven M, Massick   +3 more
openaire   +2 more sources

Fourier Transform Ion Mobility Spectrometry

Analytical Chemistry, 1985
Theorie du fonctionnement d'un spectrometre a deux portes.
F J, Knorr, R L, Eatherton, W F, Siems, H H, Hill   +3 more
openaire   +2 more sources

IR-MALDI ion mobility spectrometry

Analytical and Bioanalytical Chemistry, 2016
The novel combination of infrared matrix-assisted laser dispersion and ionization (IR-MALDI) with ion mobility (IM) spectrometry makes it possible to investigate biomolecules in their natural environment, liquid water. As an alternative to an ESI source, the IR-MALDI source was implemented in an in-house-developed ion mobility (IM) spectrometer.
José Villatoro, Martin Zühlke, Daniel Riebe, Jens Riedel, Toralf Beitz, Hans-Gerd Löhmannsröben   +5 more
openaire   +2 more sources

Liquid phase ion mobility spectrometry

The Analyst, 2011
A novel analytical method, called Liquid Phase Ion Mobility Spectrometry (LiPIMS) was demonstrated, where aqueous phase analytes were ionized and introduced into non-aqueous liquids, transported by an external electric field from the point of generation to a collection electrode.
Maggie, Tam, Herbert H, Hill
openaire   +2 more sources