Showing papers in "International Journal of Mass Spectrometry in 2013"

TL;DR: In this article, a multi-reflection time-of-flight mass separator/spectrometer (MR-ToF MS) between the linear radio-frequency ion trap and the two Penning traps is presented.

TL;DR: In this article, the first IRPD spectrum of a small hydrocarbon dication, C 7 H 6 2+, is presented, indicating that this dication corresponds to doubly ionized cycloheptatrienylidene.

TL;DR: An overview of the application of multiple-reflection time-of-flight mass spectrometers (MR-TOF-MS) for the research with short-lived nuclei is given in this paper.

TL;DR: In this article, selective solvent extraction combined with negative-ion electrospray Orbitrap mass spectrometry are shown to be well-suited for the characterization of NAs and naphthenic acid fraction compounds (NAFCs) in the Athabasca basin OSPW.

TL;DR: In this article, a charge detection mass spectrometer (CDMS) with a limit of detection of 30 elementary charges (e) for a single ion is described, which consists of an electrospray source coupled to a dual hemispherical deflection analyzer (HDA) followed by a modified cone trap incorporating an image charge detector.

TL;DR: In this paper, the reactivity of mass-selected V4O10+ cluster ions toward simple inorganic and organic molecules (H2, CO, CH4, CH2, C2H2 and C2C4) was explored case by case.

TL;DR: The Thermo Scientific MAT253-Ultra is a double-focusing isotope ratio mass spectrometer installed in the Caltech laboratories for stable isotope geochemistry as discussed by the authors.

TL;DR: In this paper, the authors summarize the technical evolution of accelerator mass spectrometry (AMS) instrumentation over the last thirty-five years and provide an introduction to the basics principles of AMS measurement technology, describe the setup of a typical AMS instrument, and discuss specific requirements to reach sensitivity as it is required to measure long-lived radionuclides at their natural levels in the environment.

TL;DR: A review of accelerator mass spectrometry applications can be found in this article, where a rather long list of references is presented, which should be consulted for a deeper understanding of the respective fields.

TL;DR: In this paper, a laser assisted atom probe tomography (APT) was used to analyze hematite (α-Fe2O3) samples containing large amounts of oxygen and revealed that only singly charged monomers (O+) are detected, and that oxygen in detected water molecules does not originate from the oxide samples.

TL;DR: In this article, an empirical shape factor was defined for proteins that approximates the computationally intensive part of the projected superposition approximation and can be used to estimate the PSA cross section based on the classical projection approximation.

TL;DR: This review focuses on common biomarkers and on different mass spectrometry techniques which have been used for bacteria identification throughout the third millennium.

TL;DR: In this paper, the projected superposition approximation (PSA) method was introduced to yield accurate ion mobility cross sections for complex macroscopic systems with great computational efficiency, achieving agreement between experimental cross sections and those predicted by theoretical algorithms for candidate structures for the compound of interest.

TL;DR: Two-state reactivity (TSR) has become a widely used concept in bioinorganic and metallo-enzymatic chemistry as discussed by the authors, and it was developed through a very intense interaction of the author with Helmut Schwarz and the late Detlef Schroder between the years 1993 and 1998.

TL;DR: In this paper, a durable surface of cationic silver nanoparticles (AgNPs) is described, covering commercial and modified MALDI targets, along with characterization of nanoparticles properties and examples of the use in MS analyses of various low molecular weight (LMW) organic compounds, including saccharides, amino acids, nucleosides, glycosides, sulfonic acids, aldehydes and nucleic bases.

TL;DR: In this article, a Monte Carlo error model was used to optimize a 43Ca-42Ca double-spike technique for measuring Ca isotope ratios (δ44/40Ca) by Multi-Collector Thermal Ionization Mass Spectrometry (MC-TIMS).

TL;DR: The Isomeric beams, LIfetimes and MAsses (ILIMA) collaboration will exploit heavy-ion storage rings at the Facility for Antiproton and Ion Research (FAIR) for the study of exotic nuclei.

TL;DR: In this paper, a dual linear ion trap (LIT) based triple quadrupole axis intersecting a spectroscopic axis containing a 22-pole ion trap cooled to 5 K was constructed.

TL;DR: The first software to automate the processing of travelling wave ion mobility mass spectrometry (TWIM-MS) data and the creation of fine-grained collision cross section vs. m/z heat maps that can be overlaid between experimental conditions are developed.

TL;DR: The combination of native ESI, electron-capture dissociation (ECD), and top-down MS is described for exploring the structures of ubiquitin and cytochrome c in the gas phase and their relation to those in the solid-state and solution.

TL;DR: A series of experiments have been carried out in the past few years using projectile fragmentation of 78 Kr, 86 Kr, 58 Ni, and 112 Sn beams, and the mass of 16 nuclides have been obtained for the first time.

TL;DR: The low-energy beam and ion trap facility, LEBIT, has been used to perform high-precision Penning trap mass spectrometry using rare isotopes produced by fast-beam fragmentation as mentioned in this paper.

TL;DR: In this article, a novel approach for the identification and evaluation of nonsteroidal anti-inflammatory drugs (NSAIDs) found in olive oil is presented, based on the exploitation of paper spray (PS) tandem mass spectrometry (MS/MS), which allows a high throughput screening of the active principles characterized by a dialdehyde moiety after an in situ derivatization with methoxyamine.

TL;DR: In this paper, the synthesis and mass spectrometry study of small gold liganded clusters ranging from Au 4 (SG) 4 to Au 25(SG) 18 (SG =glutathione peptide) is reported.

TL;DR: In this paper, a perspective is given of the motivations, methods and status of Penning trap atomic mass measurements of long-lived isotopes, with fractional uncertainties near and below 10−10.

TL;DR: In this paper, a portable vacuum ultraviolet single photon ionization time-of-flight mass spectrometer (SPI-TOFMS) combined with a membrane inlet (MI) has been developed for the on-line monitoring of volatile organic compounds (VOCs) in environmental air.

TL;DR: In this paper, pyruvate kinase multimers have been investigated by charge detection mass spectrometry (CDMS), where the m/z and z are simultaneously measured for each ion, so the mass is determined directly.

TL;DR: In this paper, two different approaches to direct imaging of plant material with desorption electrospray ionization (DESI) mass spectrometry are presented and demonstrated on leaves and petals of Hypericum perforatum.

TL;DR: In this article, the ESI-formed protonated 2′-deoxycytidine, cytidine, cytarabine, and gemcitabine have been probed using infrared multiphoton dissociation (IRMPD) spectroscopy performed in the 900-2000 cm−1 region at CLIO, the Orsay Free Electron Laser facility, and in the 2800-3800 cm− 1 region using a YAG-laser coupled to a table-top optical parametric oscillator/amplifier (OPO/OPA).

TL;DR: The first Penning trap installed at a radioactive-beam facility was ISOLTRAP, still in operation after almost thirty years at the on-line isotope separator ISOLDE at CERN as mentioned in this paper.