Results 211 to 220 of about 41,261 (264)

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
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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
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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

Voltage Sweep Ion Mobility Spectrometry

Analytical Chemistry, 2011
Ion mobility spectrometry (IMS) is a rapid, gas-phase separation technique that exhibits excellent separation of ions as a standalone instrument. However, IMS cannot achieve optimal separation power with both small and large ions simultaneously. Similar to the general elution problem in chromatography, fast ions are well resolved using a low electric ...
Eric J, Davis, Michael D, Williams, William F, Siems, Herbert H, Hill   +3 more
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Surface Ionization Ion Mobility Spectrometry

Analytical Chemistry, 1998
A surface ionization (SI) source was designed and constructed for ion mobility spectrometry (IMS). Compared with a conventional (63)Ni source, the surface ionization source is as simple and reliable, has an extended dynamic response range, is more selective in response, and does not have regulatory problems associated with radioactive ionization ...
C, Wu, H H, Hill, U K, Rasulev, E G, Nazarov   +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
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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
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Tandem trapped ion mobility spectrometry

The Analyst, 2018
Design, characteristics, and application of tandem trapped ion mobility spectrometry (TIMS-TIMS).
Fanny C. Liu, Mark E. Ridgeway, Melvin A. Park, Christian Bleiholder   +3 more
openaire   +2 more sources

Ion Mobility Spectrometry

2004
Ion mobility spectrometry was developed for the simple and cheap detection and characterization of organic compounds (Cohen and Karasek, 1970; Karasek, 1970; Caroll et al., 1971; Caroll, 1972; Cohen et al., 1972; Cohen and Crowe, 1973; Vora et al., 1987; St. Louis and Hill, 1990; Campbell et al., 1991; Burke, 1992; Eiceman and Karas, 1994; Taylor, 1996;
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