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RSS International Journal of Mass Spectrometry

RSS European Journal of Mass Spectrometry

RSS Journal of Mass Spectrometry

  • Design of experiments for the optimization of electrospray ionization in the LC‐MS/MS analysis of ciguatoxins
    Liquid chromatography (LC) coupled to mass spectrometry (MS) is being widely applied as an analytical tool in the field of marine biotoxins both for regulated and for new and emerging compounds. LC‐MS/MS recently became the reference method for the control of lipophilic toxins in the European Union, and new methods are being developed and optimized […]
  • EGT—A sensitive time‐of‐flight mass spectrometer for multielement isotope gas analysis
    The principles of operation and figures of merit of a novel, compact (324 mm × Ø 114 mm; volume approximately 1000 cm3) reflectron‐type time‐of‐flight mass spectrometer designed for simultaneous multielement isotope gas analysis is presented. The system, which consists of a pulsed electron impact ion source, is designed either to directly analyse gas samples collected and stored in a compartment […]
  • CycloBranch: An open tool for fine isotope structures in conventional and product ion mass spectra
    Within the growing community of Fourier transform mass spectrometry users, the identification of fine isotope structure has become an indispensable method for molecular formula determination. In this work, the fine isotope envelopes for accessing the mutual ratio of 2 closely related pyoverdines in a mixture were used. Bacterial siderophores pyoverdines D and E cannot be […]
  • Relative abundances of novel cyclic prodelphinidins in wine depending on the grape variety
    The identification of cyclic B‐type procyanidins in grape and wine was recently disclosed. Some of these were also found in berries of totally different vegetal species (eg, Vaccinium sp.). However, presence of a wider class of these cyclic condensed tannin compounds with variably substituted monomers has never been addressed so far. Here, an extended list […]
  • ChemFrag: Chemically meaningful annotation of fragment ion mass spectra
    Identification and structural determination of small molecules by mass spectrometry is an important step in chemistry and biochemistry. However, the chemically realistic annotation of a fragment ion spectrum can be a difficult challenge. We developed ChemFrag, for the detection of fragmentation pathways and the annotation of fragment ions with chemically reasonable structures. ChemFrag combines a […]

RSS Journal of the American Society for Mass Spectrometry

  • The FUNPET—a New Hybrid Ion Funnel-Ion Carpet Atmospheric Pressure Interface for the Simultaneous Transmission of a Broad Mass Range November 1, 2018
  • 3-Hydroxy-2-Nitrobenzoic Acid as a MALDI Matrix for In-Source Decay and Evaluation of the Isomers November 1, 2018
  • Performance Enhancements in Differential Ion Mobility Spectrometry-Mass Spectrometry (DMS-MS) by Using a Modified CaptiveSpray Source November 1, 2018
  • Cell-Free Identification of S. cerevisiae Strains by Analysis of Supernatant Using LC-MS November 1, 2018
  • Correction to: Characterization of Long-Chain Fatty Acid as N-(4-Aminomethylphenyl) Pyridinium Derivative by MALDI LIFT-TOF/TOF Mass Spectrometry November 1, 2018

RSS Mass Spectrometry Reviews

RSS Rapid Communications in Mass Spectrometry

  • Simultaneous quantification of atropine and scopolamine in infusions of herbal tea and Solanaceae plant material by matrix‐assisted laser desorption/ionization time‐of‐flight (tandem) mass spectrometry
    Rationale Atropine (Atr) and scopolamine (Scp) are toxic secondary plant metabolites of species within the Solanaceae genus that can accidentally or intentionally reach the food store chain by inaccurate harvesting of any plant material, e.g. for herbal tea infusions. Ingestion may cause severe anticholinergic poisoning thus requiring risk‐oriented determination in food and beverages. The suitability […]
  • Quadrupole mass filter operation with dipole direct current and quadrupole radiofrequency excitation
    Rationale For mass analysis, a quadrupole mass filter (QMF) usually operates at the upper tip of the first stability region. We introduce a new mode of QMF operation with dipole direct current (dc) and with auxiliary quadrupole excitation. Before experimental investigation of this mode, we have carried out numerical simulations of this process. Methods Based […]
  • Triple oxygen isotope analysis of nitrate using isotope exchange cavity ringdown laser spectroscopy
    Rationale Triple oxygen isotopes (16O/17O/18O) in nitrate are a valuable tool to ascertain the pathways of nitrate formation in the atmosphere and the fate of nitrate in ecosystems. Here we present a new method for determining Δ17O values in nitrates, based on nitrate‐water isotope equilibration (IE) and subsequent isotopic analysis of water using cavity ringdown […]
  • Fractionation of otolith nitrogen stable isotopes measured by peroxodisulfate oxidation‐bacterial conversion and isotope ratio mass spectrometry
    Rationale Otoliths are usually used to estimate the age of fish and the chemical composition such as nitrogen stable isotope ratios (δ15N values) may record environmental information and ecological role of the fish. However, the isotopic fractionation of δ15N values between diets and otoliths has rarely been investigated and remains unclear. Methods Nitrogen isotopic fractionation […]
  • Strontium isotope ratios (87Sr/86Sr) of human fingernail clippings reveal multiple location signals
    Rationale Strontium isotope ratios (87Sr/86Sr) in human fingernail keratin tissues have been underexplored for region of origin and travel history reconstruction studies. Here we investigated 87Sr/86Sr ratios in fingernail keratin to establish baseline measurements in a resident group and to examine how 87Sr/86Sr ratios changed with relocation. Methods Fingernail clippings were collected from resident (n = 10) […]

Cyclotrons

The Cyclotron: Crafting an Early Tech Marvel from the Life Magazine archives in 1948.

Posted on May 3, 2012Author kkmurrayCategories Education, Misc

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