Trace analysis in water-alcohol mixtures by continuous p-H2 hyperpolarization at high magnetic field

Trace analysis in water-alcohol mixtures by continuous p-H2 hyperpolarization at high magnetic field

Copyright © 2017 John Wiley & Sons, Ltd.

Détails bibliographiques
Publié dans:Magnetic resonance in chemistry : MRC. - 1985. - 56(2018), 7 vom: 08. Juli, Seite 633-640
Auteur principal: Hermkens, Niels K J (Auteur)
Autres auteurs: Aspers, Ruud L E G, Feiters, Martin C, Rutjes, Floris P J T, Tessari, Marco
Format: Article en ligne
Langue:English
Publié: 2018
Accès à la collection:Magnetic resonance in chemistry : MRC
Sujets:Journal Article Research Support, Non-U.S. Gov't NMR PHIP SABRE hyperpolarization para-hydrogen pyrazines pyridines whisky
Description
Résumé:Copyright © 2017 John Wiley & Sons, Ltd.
Nuclear magnetic resonance (NMR) studies of complex mixtures are often limited by the low sensitivity of the technique and by spectral overlap. We have recently reported on an NMR chemosensor on the basis of para-Hydrogen Induced Polarization that potentially addresses both these issues, albeit for specific classes of compounds. This approach makes use of Signal Amplification By Reversible Exchange (SABRE) catalysts in methanol and allows selective detection and quantification of dilute analytes in complex mixtures. Herein, we demonstrate that, despite a large decrease in attained hyperpolarization, this method can be extended to water-alcohol mixtures. Our approach was tested on whisky, where nitrogenous heterocyclic flavor components at low-micromolar concentration could be detected and quantified
Description:Date Revised 20.11.2019
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1097-458X
DOI:10.1002/mrc.4692