Results 261 to 270 of about 975,461 (302)

Baseline Mass Resolution of Peptide Isobars:  A Record for Molecular Mass Resolution

Analytical Chemistry, 2000
Baseline resolution of two peptides, RVMRGMR and RSHRGHR, of neutral monoisotopic mass, approximately 904 Da, has been achieved by microelectrospray ionization Fourier transform ion cyclotron resonance mass spectrometry at a mass resolving power of approximately 3 300 000. The elemental compositions of these molecules differ by N40 vs.
F, He, C L, Hendrickson, A G, Marshall
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High-resolution mass spectrometry for glycoproteomics

Bioanalysis, 2023
Tweetable abstract Bottom-up glycoproteomics combined with top-down strategy allows direct analysis of glycoform-mapped glycosylation and its glycans by high-resolution mass spectrometry.
Siyue Bo, Rumeng Zhang, Lingbo Zhao, Shuang Yang, Zhaohui Lu, Perry G Wang   +5 more
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High-Resolution Mass Spectrometers

Annual Review of Analytical Chemistry, 2008
Over the past decade, mass spectrometry has been revolutionized by access to instruments of increasingly high mass-resolving power. For small molecules up to ∼400 Da (e.g., drugs, metabolites, and various natural organic mixtures ranging from foods to petroleum), it is possible to determine elemental compositions (CcHhNnOoSsPp…) of thousands of ...
Alan G, Marshall, Christopher L, Hendrickson   +1 more
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Mass Resolution

2014
The ability to achieve a high mass resolution is the biggest benefit of a sector field mass spectrometer compared to instruments equipped with other mass analyzers. Therefore, a chapter presenting definitions of mass resolution, achievement of high resolution, typical signal peak shapes for each of mass resolution mode, as well as alternative ways to ...
Ondrej Hanousek, Lothar Rottmann, Thomas Prohaska   +2 more
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Resolution and Resolving Power in Mass Spectrometry

Journal of the American Society for Mass Spectrometry, 2022
The term resolution is one of the most important in mass spectrometry because it describes the ability to separate peaks in mass spectra. The term resolving power is often used to describe the ability of a mass spectrometer to resolve adjacent peaks in a mass spectrum and is often used interchangeably with resolution. The separation of peaks for singly
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Mass microscopy: high-resolution imaging mass spectrometry

Journal of Electron Microscopy, 2010
Matrix-assisted laser desorption/ionization (MALDI) imaging mass spectrometry (IMS) is a technique that localizes the spatial distribution of molecules and identifies structures by their molecular mass signatures. Recently, the resolution of MALDI-IMS has been up to microscopic level. MALDI-IMS does not need either separation or purification procedures
Mitsutoshi, Setou, Nobuya, Kurabe
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Resolution of protein structure by mass spectrometry

Mass Spectrometry Reviews, 2014
Typically, mass spectrometry is used to identify the peptides present in a complex peptide mixture and subsequently the precursor proteins. As such, mass spectrometry focuses mainly on the primary structure, the (modified) amino acid sequence of peptides and proteins.
Elien, Vandermarliere, Elisabeth, Stes, Kris, Gevaert, Lennart, Martens   +3 more
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Resolution pattern for mass spectrometry imaging

Rapid Communications in Mass Spectrometry, 2015
Rationale Up to now, there is no 'gold standard' for determining the resolution of a mass spectrometry imaging (MSI) setup (comprising the instrument, the sample preparation, the sample and the instrument settings).
Fagerer SR, Römpp A, Jefimovs K, Brönnimann R, Hayenga G, Steinhoff RF, Krismer J, Pabst M, Ibáñez AJ, Zenobi R   +9 more
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Comparison of mass resolution criteria in mass spectrometry

Analytica Chimica Acta, 1985
Abstract For a single peak, mass spectral resolution can be expressed in terms of peak width or ratio of peak position to peak width. Alternatively, for two equally intense peaks of equal width, resolution can be defined as the minimum peak separation such that the height of the valley between the combined peaks is less than a specified ratio (1%, 10%
Steven L.Mullen, Alan G. Marshall
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