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High-performance liquid chromatography/high-resolution mass spectrometry for the characterization of transformation products of ionic liquids.
- Source :
-
Rapid communications in mass spectrometry : RCM [Rapid Commun Mass Spectrom] 2017 Dec 15; Vol. 31 (23), pp. 2011-2020. - Publication Year :
- 2017
-
Abstract
- Rationale: Ionic liquids (ILs) are a subject of active research in the field of alternative solvents. We studied the behaviour of a piperidine IL, 1-butyl-1-methylpiperidinium tetrafluoroborate (BMPA), through the elucidation of its transformation products (TPs) in water.<br />Methods: The transformation pathways of BMPA were investigated using high-performance liquid chromatography (HPLC) combined with a hybrid LTQ-Orbitrap instrument on the basis of mass defect filtering. TPs of BMPA were identified by fragmentation patterns and accurate mass measurements.<br />Results: The separation and identification of 32 TPs was achieved. BMPA can be oxidized at different positions in the alkyl chains. The ultimate products corresponds to N-methyl-piperidinium and some byproducts involving ring-opening. Tests of acute toxicity, evaluated with Vibrio Fischeri bacteria, show that BMPA transformation proceeds through the formation of slightly harmful compounds.<br />Conclusions: Results showed that the main transformation pathways of BMPA were alkyl chain hydroxylation/shortening and de-alkylation, and that HPLC/LTQ-Orbitrap can serve as an important analytical platform to gather the unknown TPs of ILs.<br /> (Copyright © 2017 John Wiley & Sons, Ltd.)
Details
- Language :
- English
- ISSN :
- 1097-0231
- Volume :
- 31
- Issue :
- 23
- Database :
- MEDLINE
- Journal :
- Rapid communications in mass spectrometry : RCM
- Publication Type :
- Academic Journal
- Accession number :
- 28913976
- Full Text :
- https://doi.org/10.1002/rcm.7994