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Quantification of manganous ions in wine by NMR relaxometry.
Talanta 209:120561 (2020)
Proton relaxation in model and real wines is investigated for the first time by fast field cycling NMR relaxometry. The relaxation mechanism unambiguously originates form proton interaction with paramagnetic ions naturally present in wines. Profiles of a white Chardonnay wine from Burgundy, a red Medoc, and model wines are well reproduced by Solomon-Bloembergen-Morgan equations. Relaxation is primarily governed by interactions with Mn2+. A straightforward model-independent quantification of the manganese ion concentration (down to few tens of mu g/L) is proposed.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Ffc Nmr Relaxometry ; Chardonnay Wine ; Paramagnetic Ions ; Manganese; Field-cycling Nmr; Magnetic-relaxation Dispersion; Proton Relaxation; Contrast Agents; Geographical Origin; Paramagnetic-ions; Aqueous-solutions; Trace-elements; H-1 Nmrd; Icp-ms
ISSN (print) / ISBN
0039-9140
e-ISSN
0039-9140
Journal
Talanta
Quellenangaben
Volume: 209,
Article Number: 120561
Publisher
Elsevier
Publishing Place
Radarweg 29, 1043 Nx Amsterdam, Netherlands
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Analytical BioGeoChemistry (BGC)