The quadrupole mass spectrometer
Chemical ionization quadrupole mass spectrometer with an electrical discharge ion source for atmospheric trace gas measurement
... ionization quadrupole mass spectrometer (CI-QMS) with a radio-frequency (RF) dis- charge ion source through N 2 /CH 3 I as a source of pri- mary ...
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Magnetically enhanced quadrupole mass spectrometer
... performance mass analyser similar in essence to the Kingdon trap [71] and quadrupole ion ...potential. Mass spectra are generated in a similar manner to FTICR MS whereby the image current from the ...
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Improved methods of tandem mass spectrometry for proteomics applications in a quadrupole ion trap mass spectrometer
... triple quadrupole mass spectrometer, which has a LMCO that is independent of the parent ion’s initial mass-to-charge ...triple quadrupole mass analyzer confirm that for some of ...
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Mass Spectrometry: Quadrupole Mass Filter
... The Quadrupole Mass Spectrometer In practice, it is difficult to achieve very stable and spatially uniform magnetic fields, especially with permanent ...the mass resolution and drifts in the ...
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The development of a quinquaquadrupole mass spectrometer the study of ion molecule reactions in the gas phase using multiple quadrupole instruments
... triple quadrupole mass spectrometer has also been shown to be useful for the rapid determ ination of carbon monoxide in gas mixtures resulting from the pyrolysis of ...first quadrupole and ...
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Center-of-Mass iso-Energetic Collision-Induced Decomposition in Tandem Triple Quadrupole Mass Spectrometry
... triple quadrupole mass spectrometer in the three main scan modes: (top) recording of Precursor Ions (PI), (middle) Constant Neutral Fragment Loss (NL), (bottom) Fragment Ions (FI) of a selected ...
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A Mass Spectrometric Study of Kratom Compounds by Direct Infusion Electrospray Ionization Triple Quadrupole Mass Spectrometry
... This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract Mitragynine (MG) and its major metabolites 7-hydroxymitragynine (7-OH-MG) ...
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Matrix assisted ionisation in vacuum mass spectrometry and imaging on a modified quadrupole quadrupole time of flight mass spectrometer
... XL mass spectrometer, it was noted that ions were only produced in the inter- mediate vacuum MALDI source when the sample was placed directly under the instrument sampling ...
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Novel instrumentation and method development for a quadrupole ion trap mass spectrometer
... lower mass product ions, may produce ions that fall below the LMCO, which lowers the MS/MS ...tandem mass spectrum as possible with IRMPD must therefore be ...
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Optimization workflow for the analysis of cross linked peptides using a Quadrupole Time of Flight Mass Spectrometer
... wider mass range is therefore not recommended as a necessary modi fi cation for searching QTOF ...QTOF mass spectrometers are ubiquitous in most lines of MS research including metabolomics, proteomics, and ...
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Shotgun Lipidomics by Sequential Precursor Ion Fragmentation on a Hybrid Quadrupole Time-of-Flight Mass Spectrometer
... for mass spectrum interpretation and quantitative measurements to study systems-lipidomics in complex biological ...spectral mass accuracy, scan speed and sensitivity of improved quadrupole linked ...
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Evaluating Multiplexed Quantitative Phosphopeptide Analysis on a Hybrid Quadrupole Mass Filter/Linear Ion Trap/Orbitrap Mass Spectrometer
... We found that (i) ratio distortion remained a problem for phosphopeptide analysis in multiplexed quantitative work flows, (ii) ratio distortion can be overcome by the use of an SPS-MS3 sc[r] ...
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A Quadrupole-Orbitrap Hybrid Mass Spectrometer Offers Highest Benchtop Performance for In-Depth Analysis of Complex Proteomes
... Orbitrap mass analyzer, which was first described in 2000 5 , has now become a mainstream analyzer because of its high sensitivity, high resolution and accurate-mass ...
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An introduction to quadrupole time-of-flight mass spectrometry
... of quadrupole time-of-flight instrumentation have been made in a relatively few number of years, and the story is still far from ...high mass accuracy and sensitivity in a product ion mode with electrospray ...
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Comparison of data acquisition methods for the identification and quantification of histone post-translational modifications on a Q Exactive HF hybrid quadrupole Orbitrap mass spectrometer.
... Mass spectrometry (MS) has emerged as a powerful method to characterize and quantify histone PTMs as it allows unbiased identification and quantification of multiple histone PTMs, including combinations, in a ...
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The Planet B neutral gas mass spectrometer
... The normal to the sensor aperture is normal to the spacecraft panel. The electronics are mounted in an “X” shaped frame which surrounds the cylindrical sensor housing at its center (Fig. 3). The outer cylindrical shell ...
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Analysis of Synthetic Cannabinoids by Direct Analysis in Real Time Quadrupole Time-of-Flight Mass Spectrometry and Gas Chromatography Quadrupole Time-of-Flight Mass Spectrometry
... The direct analysis in real time (DART) ion source was first developed and published by Robert B. Cody, James A. Laramée, and H. Dupont Durst in 2005. Direct analysis in real time is an ambient ion source, meaning that ...
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Quadrupole mass filter operation under the influence of magnetic field
... of mass spectrometry is that it is independent of the atomic constitution of the substances being ...the mass spectrometer system is configured for the particular mass range under ...of ...
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The application of beam transport theory to mass spectrometer design
... Since the first lens cannot physically coincide with the points in the accelerator where the beam acceptances have been defined, nor the last lens with the source defining slit or the analyser entrance, the system must ...
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THE CASSINI ION AND NEUTRAL MASS SPECTROMETER (INMS) INVESTIGATION
... be mass/charge separated in the quadrupole section of the sensor because of their high energy or uncharged ...a mass independent background in the ...range mass scan (1–99 Daltons), those ...
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