Analytical Instrumentation
New Paper in Analytical Chemistry: Select TOF Spectrometer Unravels the Composition of Complex Motor Oils
Apr 11 2016
Researchers at Birmingham University have used Markes’ (UK) BenchTOF-Select time-of-flight mass spectrometer in combination with two-dimensional gas chromatography (GC×GC) to improve the separation and identification of hydrocarbons in motor oil.
The paper, entitled ‘Using variable ionisation energy time-of-flight mass spectrometry with comprehensive GC×GC to identify isomeric species’, shows how spectra acquired at 14 eV on BenchTOF-Select can be used to positively identify isomers from the previously unresolved complex mixture (UCM) in these samples.
The paper is the first literature citation of Markes’ new Select-eV technology, which uses revolutionary ion-source technology to generate ‘soft’ electron ionisation spectra without the inconvenience of other approaches to soft ionisation.
The study, reported in the prestigious ACS journal Analytical Chemistry, was conducted under the FASTER program, which aims to monitor atmospheric pollution and establish the link to exhaust emissions.
Dr Mohammed Salim Alam, one of the principal researchers on this project, says Select-eV has “not only allowed us to observe the molecular ions of species, but has also led us to identify the positioning of branching of straight-chain aliphatic isomeric compounds due to their individual unique fragmentation patterns”.
The authors conclude that “the combination of retention times in two dimensions and mass spectra at low and high ionisation energies confers unparalleled power to identify specific isomers within the chromatograms”.
Digital Edition
Petro Industry News 23.3 - July 2022
July 2022
In This Edition Fuel for Thought - Roper Technologies to sell majority stake in its industrial businesses to CD&R - analytica 2022 wows the laboratory industry Analytical Instrumentation...
View all digital editions
Events
ACS National Meeting & Expo, Fall 2022
Aug 21 2022 Chicago, IL, USA & Online
Aug 22 2022 Frankfurt, Germany
SPE Artificial Lift Conference and Exhibition - Americas
Aug 23 2022 VIRTUAL EVENT
Aug 24 2022 Karachi, Pakistan
Aug 29 2022 Stavanger, Norway