Issue Information
No abstract is available for this article. (Source: Journal of Mass Spectrometry)
Source: Journal of Mass Spectrometry - March 6, 2024 Category: Chemistry Tags: ISSUE INFORMATION Source Type: research
What a difference a chlorine makes: The remarkable unimolecular ion chemistry of phenyl formate and phenyl chloroformate
AbstractImaging photoelectron photoion coincidence (iPEPICO) spectroscopy and tandem mass spectrometry were employed to explore the ionisation and dissociative ionisation of phenyl formate (PF) and phenyl chloroformate (PCF). The threshold photoelectron spectra of both compounds are featureless and lack a definitive origin transition, owing to the internal rotation of the formate functional group relative to the benzene ring, active upon ionisation. CBS-QB3 calculations yield ionisation energies of 8.88 and 9.03 eV for PF and PCF, respectively. Ionised PF dissociates by the loss of CO via a transition state composed of ...
Source: Journal of Mass Spectrometry - February 20, 2024 Category: Chemistry Authors: Bethany Lowe,
Alejandro L. Cardona,
Juana Salas,
Andras Bodi,
Paul M. Mayer,
Maxi A. Burgos Paci Tags: RESEARCH ARTICLE Source Type: research
Mass spectrometric study of low energy Cs+ ion ‐induced sputtered fragmentation of PADC polymer
In this study, low-energy cesium (Cs+) ion-induced sputtered fragmentation of poly allyl diglycol carbonate (PADC) was investigated using mass spectrometry. The collision-induced dissociation mechanism revealed emission of various fragments, including monoatomic (H−, C1−, O1−), diatomic (C2−), and multiatomic (C3−, CO2−, C2O2−, C3O2−) species within the Cs+ ion energy range of 1 –5 keV. The anion current of these fragments exhibited a linear increase with rising incident Cs+ ion energy, indicating a corresponding rise in fragment abundance. Analysis of normalized yield indicated that at 1 keV incident ...
Source: Journal of Mass Spectrometry - February 5, 2024 Category: Chemistry Authors: Muhammad Sabbtain Abbas,
Bilal Jehanzaib,
Shahzad Hussain,
Abid Mahmood,
Riaz Ahmad Tags: RESEARCH ARTICLE Source Type: research
What a difference a chlorine makes: The remarkable unimolecular ion chemistry of phenyl formate and phenyl chloroformate
AbstractImaging photoelectron photoion coincidence (iPEPICO) spectroscopy and tandem mass spectrometry were employed to explore the ionisation and dissociative ionisation of phenyl formate (PF) and phenyl chloroformate (PCF). The threshold photoelectron spectra of both compounds are featureless and lack a definitive origin transition, owing to the internal rotation of the formate functional group relative to the benzene ring, active upon ionisation. CBS-QB3 calculations yield ionisation energies of 8.88 and 9.03 eV for PF and PCF, respectively. Ionised PF dissociates by the loss of CO via a transition state composed of ...
Source: Journal of Mass Spectrometry - February 5, 2024 Category: Chemistry Authors: Bethany Lowe,
Alejandro L. Cardona,
Juana Salas,
Andras Bodi,
Paul M. Mayer,
Maxi A. Burgos Paci Tags: RESEARCH ARTICLE Source Type: research
Comparison of radium ‐226 separation methods based on chromatographic and extraction resins for its determination by ICP‐MS in drinking waters
This study highlights for the first time that methodologies recently published on the evaluation of226Ra levels in drinking water by ICP-MS have comparable figures of merit. Our results offer essential insights into the selection of the most suitable separation method. (Source: Journal of Mass Spectrometry)
Source: Journal of Mass Spectrometry - February 5, 2024 Category: Chemistry Authors: Marine Roulier,
Pascale Anabelle Baya,
Steeve Roberge,
Dominic Larivi ère Tags: RESEARCH ARTICLE Source Type: research
Mass spectrometric study of low energy Cs+ ion ‐induced sputtered fragmentation of PADC polymer
In this study, low-energy cesium (Cs+) ion-induced sputtered fragmentation of poly allyl diglycol carbonate (PADC) was investigated using mass spectrometry. The collision-induced dissociation mechanism revealed emission of various fragments, including monoatomic (H−, C1−, O1−), diatomic (C2−), and multiatomic (C3−, CO2−, C2O2−, C3O2−) species within the Cs+ ion energy range of 1 –5 keV. The anion current of these fragments exhibited a linear increase with rising incident Cs+ ion energy, indicating a corresponding rise in fragment abundance. Analysis of normalized yield indicated that at 1 keV incident ...
Source: Journal of Mass Spectrometry - February 4, 2024 Category: Chemistry Authors: Muhammad Sabbtain Abbas,
Bilal Jehanzaib,
Shahzad Hussain,
Abid Mahmood,
Riaz Ahmad Tags: RESEARCH ARTICLE Source Type: research
Addressing challenges with evaluating hydrogen ‐selective membrane performance by quadrupole mass spectrometry
This study addresses this challenge by presenting a detailed calibration procedure that significantly improves hydrogen quantification accuracy up to a factor of 2.5. CO and CO2 were chosen as interfering gases because they are commonly released in conventional hydrogen production processes. By carefully evaluating the performance of these membranes, new opportunities for hydrogen separation may be realized. (Source: Journal of Mass Spectrometry)
Source: Journal of Mass Spectrometry - February 3, 2024 Category: Chemistry Authors: Ardita Kurtishaj,
Marko Žumer,
Vincenc Nemanič,
Uroš Cvelbar Tags: RESEARCH ARTICLE Source Type: research
Ion mobility –tandem mass spectrometry of bulky tert‐butyl thiol ligated gold nanoparticles
AbstractGold nanoparticles (AuNPs) synthesized in the 1 –3 nm range have a specific number of gold core atoms and outer protecting ligands. They have become one of the “hot topics” in recent decades because of their interesting physical and chemical properties. The characterization of their structures is usually achieved by crystal X-ray diffract ion although the structures of some AuNPs remain unknown because they have not been successfully crystallized. An alternative method for studying the structure of AuNPs is electrospray ionization–ion mobility–tandem mass spectrometry (ESI-IM-MSMS). This research evalua...
Source: Journal of Mass Spectrometry - January 24, 2024 Category: Chemistry Authors: Kalpani H. Wijesinghe,
Christopher Hood,
Daniell Mattern,
Laurence A. Angel,
Amala Dass Tags: RESEARCH ARTICLE Source Type: research
Assessing the performance of a targeted absolute quantification isotope dilution liquid chromatograhy tandem mass spectrometry assay versus a commercial nontargeted relative quantification assay for detection of three major perfluoroalkyls in human blood
AbstractIsotope dilution ultrahigh-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC –MS/MS) is commonly used for trace analysis of polyfluoroalkyl and perfluoroalkyl substances (PFAS) in difficult matrices. Commercial nontargeted analysis of major PFAS where relative concentrations are obtained cost effectively is rapidly emerging and is claimed to provide comparable results to t hat of absolute quantification using matrix matched calibration and isotope dilution UHPLC–MS/MS. However, this remains to be demonstrated on a large scale. We aimed to assess the performance of a targeted absolute ...
Source: Journal of Mass Spectrometry - January 24, 2024 Category: Chemistry Authors: Samira Salihovic,
Linda Dunder,
Monica Lind,
Lars Lind Tags: RAPID COMMUNICATION Source Type: research
Application of sandpaper spray ionization mass spectrometry to comprehensively examine maple leaves infected with distinct fungi
This study describes a novel application for sandpaper spray ionization mass spectrometry (SPS-MS), to examine the surface of maple tree (Acer sp.) leaves. By comparing mass spectrometry fingerprints, healthy leaves from those infected with powdery mildew andRhytisma acerinum were distinguished. Leaves were grated with sandpaper, cut into triangles, and placed before the mass spectrometer, with the addition of a methanol-formic acid solution. Multivariate statistical analysis categorized the samples into three groups. Overall, SPS-MS effectively analyzed leaves with infectious microorganisms, potentially aiding in the crea...
Source: Journal of Mass Spectrometry - January 24, 2024 Category: Chemistry Authors: Leonardo Parasecolo,
Laurentiu G. Dabija,
Rani Shouk,
Dani Shouk,
Rodinei Augusti,
Demian R. Ifa Tags: APPLICATION NOTE Source Type: research
