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High-resolution field-ionization mass spectrometry
International Journal of Mass Spectrometry and Ion Physics, 1969Abstract A dual field-ion/electron impact source has been developed for a high-resolution mass spectrometer with which it is possible to obtain both types of spectra on the same sample with little loss of resolution or mass measuring accuracy. An externally replaceable and adjustable blade emitter gives substantially improved sensitivity (10−7 A torr−
E.M. Chait +4 more
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High resolution field desorption mass spectrometry: II—glycosides
Biological Mass Spectrometry, 1974The high resolution field desorption mass spectra of a number of glycosides are described. In all cases the spectra enabled molecular weights and elemental formulae to be established, and the presence of fragment ions due to cleavage of the sugar groups provides considerable assistance in the identification of sugar and aglycone moieties. The [M + 23Na]
H R, Schulten, D E, Games
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Tissue Analysis with High-Resolution Imaging Mass Spectrometry
2009Molecular mass spectrometric images of tissue sections facilitate precise location of biomolecules, drugs, their metabolites and the biomolecular aberrations they target. Technological developments are rapidly expanding the capabilities of imaging mass spectrometers.
Altelaar, A.F.M., Heeren, R.M.A.
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Signal Detection in High-Resolution Mass Spectrometry Data
Journal of Proteome Research, 2008Mass spectrometry data from high-resolution time-of-flight instruments often contain a vast number of noninformative background-ion peaks whose signal is similar to that of peptide peaks. Consequently, seeking peptide signal in these spectra based on a signal-to-noise ratio will remove signal peaks as well as noise.
Dale F, McLerran +4 more
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High-resolution tandem mass spectrometry of carbonic anhydrase
Analytical Chemistry, 1994Electrospray ionization of carbonic anhydrase with ion dissociation yields a mass spectrum from which the masses of > 100 isotopic clusters are determined accurately, with the number of charges assigned directly from resolved isotopic peaks. Of these clusters, 80% correspond to fragmentation at or near the amino acid proline. The masses of combinations
M W, Senko, S C, Beu, F W, McLafferty
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High‐Resolution Ion Mobility Spectrometry–Mass Spectrometry on Poly(methyl methacrylate)
Angewandte Chemie International Edition, 2010Further dimensions: The title mass spectrometric technique offers an extra dimension of separation based on size and conformation of the molecules in addition to m/z separation without the need of time-consuming liquid chromatography separation. Detailed mapping of the mass and drift time separated ions allowed identification of end groups originating ...
Song, J. +4 more
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Mass Spectrometry and High Resolution Mass Spectrometry: An Overview
2017In this chapter, a brief overview of fundamentals in mass spectrometry and some applications are presented. The main concepts in ionization techniques, classical techniques and ambient mass spectrometry are followed by an overview on analyzers.
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High-Resolution Mass Spectrometry for Untargeted Drug Screening
2016While gas chromatography-mass spectrometry (GC/MS) continues to be the forensic standard for toxicology, liquid chromatography coupled to tandem MS offers significant operational advantages for targeted confirmatory analysis. LC-high-resolution (HR)-MS has recently been available that offers advantages for untargeted analysis.
Alan H B, Wu, Jennifer, Colby
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High-resolution mass spectrometry
2020M. Ariel Geer Wallace, James P. McCord
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High resolution mass spectrometry of natural products
Pure and Applied Chemistry, 1964Abstract
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