Characterization of functional groups in ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Characterization of functional groups in estuarine dissolved organic matter by DNP-enhanced 15N and 13C solid-state NMR
Auteur(s) :
Venel, Florian [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Nagashima, Hiroki [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
National Institute of Advanced Industrial Science and Technology [AIST]
Rankin, Andrew G. M. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Anquetil, Christelle [Auteur]
Klimavicius, Vytautas [Auteur]
Gutmann, Torsten [Auteur]
Buntkowsky, Gerd [Auteur]
Derenne, Sylvie [Auteur]
Lafon, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Institut universitaire de France [IUF]
Huguet, Arnaud [Auteur]
Pourpoint, Frederique [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Nagashima, Hiroki [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
National Institute of Advanced Industrial Science and Technology [AIST]
Rankin, Andrew G. M. [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Laboratoire de Chimie de la Matière Condensée de Paris [LCMCP]
Anquetil, Christelle [Auteur]
Klimavicius, Vytautas [Auteur]
Gutmann, Torsten [Auteur]
Buntkowsky, Gerd [Auteur]
Derenne, Sylvie [Auteur]
Lafon, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Institut universitaire de France [IUF]
Huguet, Arnaud [Auteur]
Pourpoint, Frederique [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Titre de la revue :
ChemPhysChem
Nom court de la revue :
ChemPhysChem
Numéro :
22
Pagination :
1907-1913
Éditeur :
Wiley-VCH Verlag
Date de publication :
2021-09-15
ISSN :
1439-4235, 1439-7641
Mot(s)-clé(s) en anglais :
13C
15N
dynamic nuclear polarization
dissolved organic matter
Seine estuary
15N
dynamic nuclear polarization
dissolved organic matter
Seine estuary
Discipline(s) HAL :
Chimie/Chimie inorganique
Chimie/Chimie analytique
Chimie/Chimie organique
Chimie/Chimie analytique
Chimie/Chimie organique
Résumé en anglais : [en]
Estuaries are key ecosystems with unique biodiversity and are of high economic importance. Along the estuaries, variations in environmental parameters, such as salinity and light penetration, can modify the characteristics ...
Lire la suite >Estuaries are key ecosystems with unique biodiversity and are of high economic importance. Along the estuaries, variations in environmental parameters, such as salinity and light penetration, can modify the characteristics of dissolved organic matter (DOM). Nevertheless, there is still limited information about the atomic-level transformations of DOM in this ecosystem. Solid-state NMR spectroscopy provides unique insights into the nature of functional groups in DOM. A major limitation of this technique is its lack of sensivity, which results in experimental time of tens of hours for the acquisition of 13C NMR spectra and generally precludes the observation of 15N nuclei for DOM. We show here how the sensitivity of solid-state NMR experiments on DOM of Seine estuary can be enhanced using dynamic nuclear polarization (DNP) under magic-angle spinning. This technique allows the acquisition of 13C NMR spectra of these samples in few minutes, instead of hours for conventional solid-state NMR. Both conventional and DNP-enhanced 13C NMR spectra indicate that the 13C local environments in DOM are not strongly modified along the Seine estuary. Furthermore, the sensitivity gain provided by the DNP allows the detection of 15N NMR signal of DOM, in spite of the low nitrogen content. These spectra reveal that the majority of nitrogen is in the amide form in these DOM samples and show an increased disorder around these amide groups near the mouth of the Seine.Lire moins >
Lire la suite >Estuaries are key ecosystems with unique biodiversity and are of high economic importance. Along the estuaries, variations in environmental parameters, such as salinity and light penetration, can modify the characteristics of dissolved organic matter (DOM). Nevertheless, there is still limited information about the atomic-level transformations of DOM in this ecosystem. Solid-state NMR spectroscopy provides unique insights into the nature of functional groups in DOM. A major limitation of this technique is its lack of sensivity, which results in experimental time of tens of hours for the acquisition of 13C NMR spectra and generally precludes the observation of 15N nuclei for DOM. We show here how the sensitivity of solid-state NMR experiments on DOM of Seine estuary can be enhanced using dynamic nuclear polarization (DNP) under magic-angle spinning. This technique allows the acquisition of 13C NMR spectra of these samples in few minutes, instead of hours for conventional solid-state NMR. Both conventional and DNP-enhanced 13C NMR spectra indicate that the 13C local environments in DOM are not strongly modified along the Seine estuary. Furthermore, the sensitivity gain provided by the DNP allows the detection of 15N NMR signal of DOM, in spite of the low nitrogen content. These spectra reveal that the majority of nitrogen is in the amide form in these DOM samples and show an increased disorder around these amide groups near the mouth of the Seine.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Autre(s) projet(s) ou source(s) de financement :
Chevreul Institute (FR 2638)
Ministère de l'Enseignement Supérieur, de la Recherche et de l'Innovation, Hauts-de-France Region
Isite ULNE. Grant Number: MOFFiN-OPE-2019-43-5400
GIP Seine-Aval. Grant Number: 2014-2017
AvH society
Ministère de l'Enseignement Supérieur, de la Recherche et de l'Innovation, Hauts-de-France Region
Isite ULNE. Grant Number: MOFFiN-OPE-2019-43-5400
GIP Seine-Aval. Grant Number: 2014-2017
AvH society
Établissement(s) :
CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Centrale Lille
ENSCL
Univ. Artois
Université de Lille
Collections :
Équipe(s) de recherche :
RMN et matériaux inorganiques (RM2I)
Date de dépôt :
2022-03-24T09:02:56Z
2023-12-05T16:03:11Z
2023-12-05T16:03:11Z
Fichiers
- Manuscript-revised.pdf
- Version finale acceptée pour publication (postprint)
- Accès libre
- Accéder au document