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1,595 Newest Publications about the topic spectrometers

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Comparison of linear intrascan and interscan dynamic ranges of Orbitrap and ion‐mobility time‐of‐flight mass spectrometers

06-Sep-2017 | Anton Kaufmann, Stephan Walker, Rapid Communications in Mass Spectrometry, 2017

Abstract Rationale The linear intrascan and interscan dynamic ranges of mass spectrometers are important in metabolome and residue analysis. A large linear dynamic range is mandatory if both low and high abundance ions have to be detected and quantitated in heavy matrix samples. These ...

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AssayR: A Simple Mass Spectrometry Software Tool for Targeted Metabolic and Stable Isotope Tracer Analyses

05-Sep-2017 | Jimi Wills; Joy Edwards-Hicks; Andrew J. Finch, Analytical Chemistry, 2017

Metabolic analyses generally fall into two classes: unbiased metabolomic analyses and analyses that are targeted toward specific metabolites. Both techniques have been revolutionized by the advent of mass spectrometers with detectors that afford high mass accuracy and resolution, such as ...

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Resolution Ladder for High-Resolution Mass Spectrometry

01-Sep-2017 | Matthias Schittmayer; Ruth Birner-Gruenberger, Analytical Chemistry, 2017

High-resolution mass spectrometry has become a key technology in life sciences. Since it is often unfeasible to find pairs of analytes with an appropriate mass difference to actually quantify the resolution experimentally, resolution is usually calculated from the shape of a single mass peak. In ...

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SHARPER Reaction Monitoring: Generation of a Narrow Linewidth NMR Singlet, without X-Pulses, in an Inhomogeneous Magnetic Field

25-Aug-2017 | Ariana B. Jones; Guy C. Lloyd-Jones; Dušan Uhrín, Analytical Chemistry, 2017

We report a new pure-shift method, termed SHARPER (Sensitive, Homogeneous, And Resolved PEaks in Real time) designed for the analysis of reactions and equilibria by NMR. By focusing on a single selected signal, SHARPER removes all heteronuclear couplings of a selected nucleus without the need to ...

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Sensors, Vol. 17, Pages 1857: Translational Imaging Spectroscopy for Proximal Sensing

11-Aug-2017 | Rogass, Christian ; Koerting, Friederike M.; Mielke, Christian ; Brell, Maximilian ; Boesche, Nina K.; Bade, Maria ; ..., Sensors, 2017

Sensors, Vol. 17, Pages 1857: Translational Imaging Spectroscopy for Proximal Sensing Sensors doi: 10.3390/s17081857 Authors: Christian Rogass Friederike Koerting Christian Mielke Maximilian Brell Nina Boesche Maria Bade Christian Hohmann Proximal sensing as the near ...

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Comparison of seven portable Raman spectrometers: beryl as a case study

27-Jul-2017 | Jan Jehlička, Adam Culka, Danilo Bersani, Peter Vandenabeele, Journal of Raman Spectroscopy, 2017

In this paper, a series of beryl varieties with the accent on emeralds was investigated using seven portable Raman spectrometers equipped mainly with 785‐ and 532‐nm excitation lasers. Additionally, one dual system and a new portable sequentially shifted excitation Raman spectrometer were ...

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Derivatization agents for electrochemical detection in amino acid, peptide and protein separations: the hidden electrochemistry?

25-Jul-2017 | Tania Sierra, Agustin G. Crevillen, Alberto Escarpa, ELECTROPHORESIS, 2017

In proteomics and clinical analysis, LIF and MS are the most used detectors coupled to separation techniques. MS offers good sensitivity and analyte identification ability but, as counterbalance, it is expensive and it needed background electrolytes compatible with mass spectrometers. LIF ...

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New 1.2 GHz NMR Spectrometers— New Horizons?

25-Jul-2017 | Harald Schwalbe, Angewandte Chemie International Edition, 2017

The latest ultrahigh‐field NMR spectrometers are a huge technological challenge that require large financial investments. In his Guest Editorial, Harald Schwalbe justifies the need for spectrometers with higher magnetic field strengths. The important results from previous generations of ...

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Development of an energy‐dispersive X‐ray spectroscopy analyzer employing superconducting tunnel junction array detectors toward nanometer‐scale elemental mapping

18-Jul-2017 | Go Fujii, Masahiro Ukibe, Shigetomo Shiki, Masataka Ohkubo, X-Ray Spectrometry, 2017

Energy‐dispersive X‐ray detectors based on superconducting tunnel junctions (STJs) exhibit at best energy resolution of about 5eV in full width at half‐maximum for soft X‐rays with energy levels of less than ~1keV as well as a large sensitive area (>1mm2) and a high counting rate capability ...

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High-Sensitivity Rheo-NMR Spectroscopy for Protein Studies

05-Jul-2017 | Daichi Morimoto; Erik Walinda; Naoto Iwakawa; Mayu Nishizawa; Yasushi Kawata; Akihiko Yamamoto; Masahiro Shirakawa; ..., Analytical Chemistry, 2017

Shear stress can induce structural deformation of proteins, which might result in aggregate formation. Rheo-NMR spectroscopy has the potential to monitor structural changes in proteins under shear stress at the atomic level; however, existing Rheo-NMR methodologies have insufficient sensitivity ...

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