Results 211 to 220 of about 43,067 (263)
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Inverse Ion Mobility Spectrometry
Analytical Chemistry, 2009A novel method is proposed for enhancing the separation power of ion mobility spectrometry (IMS) and other similar pulsed techniques, such as time-of-flight mass spectrometry. In this technique, rather than generating an ion packet, a dip is created in the ion beam. This is achieved by an inverse pulse applied to the shutter grid.
Mahmoud, Tabrizchi, Elham, Jazan
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Biological Mass Spectrometry, 1988
Positive and negative ion mobility spectra of dimenhydrinate are presented, and the calculated reduced mobility (K0) values for the most significant peaks are reported. Mass identification of the ionic species associated with the peaks in the ion mobility spectra was achieved by interfacing the ion mobility spectrometer to a mass spectrometer.
A H, Lawrence, A A, Nanji
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Positive and negative ion mobility spectra of dimenhydrinate are presented, and the calculated reduced mobility (K0) values for the most significant peaks are reported. Mass identification of the ionic species associated with the peaks in the ion mobility spectra was achieved by interfacing the ion mobility spectrometer to a mass spectrometer.
A H, Lawrence, A A, Nanji
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Fourier Deconvolution Ion Mobility Spectrometry
Talanta, 2022Multiplexing 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 +9 more
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Developments in ion mobility spectrometry–mass spectrometry
Analytical and Bioanalytical Chemistry, 2001Ion mobility spectrometry (IMS) has been used for over 30 years as a sensitive detector of organic compounds. The following is a brief review of IMS and its principles with an emphasis on its usage when coupled to mass spectrometry. Since its inception, IMS has been interfaced with quadrupole, time-of-flight, and Fourier-transform ion cyclotron ...
D C, Collins, M L, Lee
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Liquid phase ion mobility spectrometry
The Analyst, 2011A 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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Ion mobility spectrometry and ion mobility-mass spectrometry in clinical chemistry
Advancements in clinical chemistry have major implications in terms of public health, prompting many clinicians to seek out chemical information to aid in diagnoses and treatments. While mass spectrometry (MS) and hyphenated-MS techniques such as LC-MS or tandem MS/MS have long been the analytical methods of choice for many clinical applications, theseKyle E, Lira +2 more
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IR-MALDI ion mobility spectrometry
Analytical and Bioanalytical Chemistry, 2016The 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 +5 more
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Dynamic Response of Ion Mobility Spectrometry
Journal of the American Society for Mass Spectrometry, 2022Ion mobility spectrometers (IMS) are widely used in the security industry as well as in analytical measurements. Nevertheless, the IMS input is dynamic in nature because the sampling input can vary over time. Similar to most instruments, IMS is unable to respond immediately to variations in the input sample.
Mahmoud Tabrizchi +3 more
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Ion mobility spectrometry in breath research
Journal of Breath Research, 2014The number of publications in the field of breath analysis using different types of ion mobility spectrometers (IMS) has increased over the last few years. In this paper, the publications between 2010 and 2013 are reviewed with respect to different types of IMS such as differential mobility spectrometers, high-field asymmetric waveform ion mobility ...
Baumbach, Jörg +2 more
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Ion Mobility Spectrometry of Heavy Metals
Analytical Chemistry, 2016A simple, fast, and inexpensive method was developed for detecting heavy metals via the ion mobility spectrometry (IMS) in the negative mode. In this method, Cl(-) ion produced by the thermal ionization of NaCl is employed as the dopant or the ionizing reagent to ionize heavy metals.
Vahideh, Ilbeigi +2 more
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