OOIR: Observatory of International Research

Papers

(The TQCC of International Journal of Mass Spectrometry is 4. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-12-01 to 2025-12-01.)

Article	Citations
Graphical abstract TOC	42
All-ions laser induced dissociation (AI-LID) in the C-trap of a Q Exactive: Data independent identification and quantification directly from ultra-high resolution differential mass spectra	41
Isotopic analysis of zinc plasma using Laser‒Ablation Time‒of‒Flight mass spectrometer	37
Electrospray droplet impact/secondary ion mass spectrometry (EDI/SIMS) applied to the analysis of explosives	27
Editorial Board	26
Resolving metal binding properties within subunits of a multimeric enzyme Mnx by surface induced dissociation and native ion mobility mass spectrometry	21
D/E-rich peptides are less suitable than D/E-deficient peptides for identification by negative-ion HCD due to scarce production of sequencing ions from multiply charged precursors	21
Concept for high-throughput mRNA sequence confirmation by atmospheric pressure MALDI technique applied to RNA digestion products	19
Triboelectric nanogenerator-coated blade spray mass spectrometry for volume-limited drug analysis	18
Molecular and ionic sublimation of DyBr3 and TmBr3. A summary of thermochemical properties of the vapor species for thermally stable lanthanide tribromides	18
A rapid method of simultaneous chromatographic purification of Li and Mg for isotopic analyses using MC-ICP-MS	17
Mass spectrometry analysis of drugs using an integrated thermal desorption corona discharge ionization device	17
Graphical abstract TOC	16
Gas phase proton affinity and basicity of methylated uracil-derivatives	15
Graphical abstract TOC	15
Mass spectrometry structural analysis of intrinsically disordered phosphoproteins	14
High Kinetic Energy Ion Mobility Spectrometry – Mass Spectrometry investigations of four inhalation anaesthetics: isoflurane, enflurane, sevoflurane and desflurane	13
Similarities and dissimilarities in the fragmentation of polycyclic aromatic hydrocarbon cations: A case study involving three dibenzopyrene isomers	13
Monovalent nickel ion as ionization probe in matrix-assisted laser desorption/ionization mass spectrometry	13
Ion fragmentation study of [EMMIM][TFSI], [EMIM][OTf] and [EMIM][DCA] by vacuum ultraviolet light	13
Ion mobility-assisted free radical-initiated peptide sequencing	13
Rapid identification of short oligonucleotide impurities using lithium adduct consolidated MALDI-TOF mass spectrometry	12
Graphical abstract TOC	12
Editorial Board	12
A novel method to analyse DART TOFMS spectra based on Convolutional Neural Networks: A case study on methanol extracts of wool fibres from endangered camelids	12

Arrhenius parameters of singly- and doubly-protonated bradykinin measured via dipolar DC kinetics on a quadrupole/time-of-flight platform	12
A discussion with Richard O'Hair regarding his life and career	12
Interrogation of three-finger toxin and phospholipase A2 higher order structures from the forest cobra (Naja melanoleuca) venom using a mass spectrometric approach	11
High-resolution mass spectrometric elucidation of electron ionization induced fragmentation pathways of methylated warfarin and selected hydroxylated species	11
Fragmentation pathways of chemical weapons convention-related organophosphorus Novichok agents: The electron ionization and electrospray ionization tandem mass spectroscopy and DFT calculation studies	11
Graphical abstract TOC	11
Plasmid-encoded gene expression of pathogenic bacteria by antibiotic induction as detected by MALDI-TOF-TOF mass spectrometry and top-down proteomic analysis	10
Ambient ionisation mass spectrometry for the trace detection of explosives using a portable mass spectrometer	10
Infrared multiple photon dissociation spectroscopy of protonated amino acid clusters with non-interacting side chains in the gas phase	10
The IJMS Young Scientist Feature: A special article collection featuring perspectives and critical insights from early career mass spectrometrists from around the globe	10
Fragmentation patterns of protonated benzothiazole sulfenamides by atmospheric pressure chemical ionization	10
Decarboxylation of fatty acids by ternary zinc cationic complexes studied by mass spectrometry and theoretical calculations	10
Graphical abstract TOC	10
Graphical abstract TOC	10
Editorial Board	10
How hot are weakly-bound cluster ions in a blackbody field? Insights from master equation modeling	10
Editorial Board	10
Non-ergodic fragmentation of protonated reserpine using femtosecond laser activation	10
Graphical abstract TOC	10
Graphical abstract TOC	9
Laser desorption mass spectrometry of rubrene and photodissociation of its cation	9
On-surface multicomponent Povarov reaction examined by paper spray mass spectrometry	9
A multi-reflection time-of-flight mass spectrometer for the offline ion source of the PUMA experiment	9
Assessing the effectiveness of the NIST DART-MS Forensics Database and Data Interpretation Tool for designer drug screening with alternative instrumentation	9
Reactions of atomic thorium and uranium cations with CF4 studied by guided ion beam tandem mass spectrometry	9
Editorial Board	9
Dual metal electrolysis in theta capillary for lipid analysis	9
Discrimination of subtypes of sesquiterpene pyridine alkaloids using a multistage ion fragmentation strategy	9
Graphical abstract TOC	8
Graphical abstract TOC	8
Probing the formation of anhydrovinblastine in Catharanthus roseus by single-cell mass spectrometry	8
Selecting the correct autosampler vial and insert to improve reproducibility and accuracy in mass spectrometry analyses	8
LDI-MS performance of gold nanostars as an inorganic matrix for low molecular weight analytes	8
Person-portable gas chromatography-toroidal ion trap mass spectrometry analysis of coffee bean volatile organic compounds	8
Graphical abstract TOC	8
Next generation MasSpec pen technology: Innovations in instrumentation and medical device development for intraoperative use	8
In silico structures, mass spectra and retention indices database development for purposes of chemical weapons convention	8
Mass spectrometry provides insights into the structures of polyoxovanadate alkoxide clusters substituted with Fe and W heterometals	8
Graphical abstract TOC	8
Introducing direct probe electrospray ionization tandem mass spectrometry in apiculture: Comparison with other mass spectrometric methods for the determination of antibiotics in bees and honey	8
Cyclic IMS-MS evidence for potential ring opening in collisionally activated sodiated cyclodextrins	8
Graphical abstract TOC	8
Structural differentiation of protein charge state conformers via gas-phase ion/ion cross-linking mass spectrometry	7
Classification of electrospray axial regimes as revealed by spray current measurements	7
Mass calibration of Rosetta’s ROSINA/DFMS mass spectrometer	7
Editorial Board	7
Complexation of diserinol isophthalamide with phosphorylated biomolecules in electrospray ionization mass spectrometry	7
MAP-2 apatite: A new young age reference material for U–Pb dating with LA-ICPMS analysis	7
Contents continued	7
Richard A. J. O'Hair – A mass spectrometrist who is showing that gas-phase ion chemistry is not just a science but an art	7

Multiple selected ion monitoring mode for sensitive imaging of eicosanoids in tissues using nanospray desorption electrospray ionization (nano-DESI) mass spectrometry	7
Gas-phase Ni(II) affinities of alternative metal binding peptides from competitive threshold collision-induced dissociation	7
Graphical abstract TOC	7
Graphical abstract TOC	7
A MALDI-TOF MS based method for the fast screening of recombinant protein high-yield strains	7
Is the first step in MALDI in-source decay electron transfer or hydrogen atom abstraction?	7
Reliable uncertainties: Error correlation, rotated error bars, and linear regressions in three-isotope plots and beyond	7
Analysis of liquid samples by Low-Temperature Plasma Ionization Source-ion mobility spectrometry	6
Rate constant determination in the reaction of gold ion with carbonyl using single-atom chemistry in gas phase	6
An easy-to-use graphical user interface for mass spectrometry imaging analysis	6
Electron interactions with beryllium and its hydrides	6
Prediction of electron ionization mass spectra based on graph convolutional networks	6
Cationization of organic molecules under keV and MeV primary ion bombardment	6
Contents continued	6
Research and implementation of the adaptive control method for emission current of electron ionization ion source	6
Relative influence of helium and nitrogen carrier gases on analyte ion branching ratios in SIFT-MS	6
Editorial Board	6
Survey of the multi-stage mass spectrometry of common ionic liquid cations and some polyfluorinated ions	6
Identification of complementary McLafferty rearrangement ions at m/z 222 and 224 of methylstearate using high-resolution electron ionization time-of-flight mass spectrometer	6
Graphical abstract TOC	6
Graphical abstract TOC	6
Structure characterisation using thin-layer chromatography-MALDI MS and infrared ion spectroscopy	6
The development of a novel double-focusing thermal ionization mass spectrometer	6
MALDI sample preparation methods: A mini review	6
Graphical abstract TOC	6
Derivatization strategy for sensitive identiﬁcation of neutral and acidic glycosphingolipids using RPLC-MS	6
The IJMS Young Scientist Feature: A special article collection featuring perspectives and critical insights from early career mass spectrometrists around the globe	6
A simplified coaxial ion trap mass analyzer: Characterization of the simplified toroidal ion trap with a rectilinear ion guide	6
Femtosecond multiphoton ionization of dialkyl carbonate green solvents at 400 nm using photoelectron-photoion coincidence imaging	6
Graphical abstract TOC	6
Advances in nucleic acid sample preparation for electrospray ionization and matrix-assisted laser desorption ionization mass spectrometry	6
Editorial Board	5
A novel self-attention model based on cosine self-similarity for cancer classification of protein mass spectrometry	5
Experimental studies on low-pressure air dielectric barrier discharge plasma for ionization source	5
The first example of an on-surface enzymatic reaction evaluated by paper spray mass spectrometry (PS-MS): Deacetylation of 1,2,3,4-tetra-O-acetyl-β-D-xylopyranose	5
Graphical abstract TOC	5
Editorial Board	5
Axial and radial space-charge effects in radiofrequency gas-filled low-pressure quadrupole ion guides	5
An analytical evaluation of tools for lipid isomer differentiation in imaging mass spectrometry	5
Reactor fuel characterization: Evaluation of multiple techniques for expedited analysis of 235U/238U isotopic ratios in U-10Mo	5
The spatial distribution of components in Moringa oleifera (Lam) seed by matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI)	5
Amide bond formation between substances located in two immiscible liquid phases without phase-transfer catalyst	5
IRMPD spectroscopy of deprotonated selenocysteine - The 21st proteinogenic amino acid	5
LDI mass spectrometry and quantum chemical calculations of four, five, and six atomic clusters of tantalum oxochloride anion-radicals	5
Graphical abstract TOC	5
On the resolution, sensitivity and ion transmission efficiency of a planar FAIMS	5
Contents continued	5
Portable nanoelectrospray periodic focusing differential ion mobility spectrometer for the rapid screening of illicit drugs	5
Calculated rate coefficients between CI-MS reagent ions and organosulfur compounds causing food taints and off-flavours	5
Graphical abstract TOC	5
Measurement of serum uric acid by isotope dilution liquid chromatography tandem mass spectrometry: Modification of a candidate reference measurement method and its clinical application	5
Ionization detection of neutral 2,5-dihydroxy benzoic acid molecules in the matrix-assisted laser desorption/ionization plume by ultraviolet laser post-ionization: Correlation between internal energy	5
Characterization of lipid carbon–carbon double-bond isomerism via ion mobility-mass spectrometry (IMS-MS) combined with cuprous ion-induced fragmentation	5
Application of liquid chromatography quadrupole time-of-flight mass spectrometry for the elucidation of fenamiphos photodegradation by-products	5
Graphical abstract TOC	5
Theoretical study of the impact of ion acceleration parameters on the mass resolving power in linear MALDI time-of-flight mass spectrometry	4
Contents continued	4
Editorial Board	4
Pyrolysis and thermal extraction of polymeric materials with suction-driven, real-time ionization sources and rapid polarity switching, high resolution mass spectrometry	4
Graphical abstract TOC	4
Editorial Board	4
Highly efficient TiO2-based one-step strategy for micro volume plasma-derived extracellular vesicles isolation and multiomics sample preparation	4
Assessing the matrix effects on MALDI-MS in the positive and negative ion mode detection for protein-protected metal nanoclusters	4
Graphical abstract TOC	4
Adaptation and operation of a quadrupole/time-of-flight tandem mass spectrometer for high mass ion/ion reaction studies	4
A boundary condition decoupled steady-state equivalent model for the simulation of FAIMS ion optical path	4
Mass spectrometry of laser reduced graphene oxide in vacuum	4
Comparative study of H3O+ (aq) and NH4+ (aq) on electrophoresis, protonating ability, and sodiation of proteins	4
In-situ laser ablation of mineral fluid inclusions: Evaluating the effects of solid and liquid matrices, laser repetition rate and fluence on data quality	4
Development of a handheld mass spectrometer driven by the sinusoidal frequency scanning technique	4
Differential mobility spectrometry improves uranium isotope ratio measurements on an ion trap mass spectrometer	4
Determination of dimethyl sulfate genotoxic impurity in pantoprazole sodium sesquihydrate by derivatization method and UPLC/MS	4
An adaptive EEMD-machine learning algorithm for multi-matrix drug concentration prediction using miniature mass spectrometry	4
Graphical abstract TOC	4
Graphical abstract TOC	4
Graphical abstract TOC	4
Electron elastic scattering from biomolecular targets: 1,3-dihydroxytetrahydrofuran, deoxyribose, THFA monophosphate and deoxyribose monophosphate	4
Faraday detector uranium isotope ratio measurement: Insights from solution- and laser ablation-based sampling methodologies on the Neoma MC-ICP-MS	4
Approaches with different reaction gases for the determination of iron in rare earth samples based on on-mass mode by inductively coupled plasma tandem mass spectrometer	4