---
_id: '64052'
abstract:
- lang: eng
  text: Abstract 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.
author:
- first_name: Florian
  full_name: Venel, Florian
  last_name: Venel
- first_name: Hiroki
  full_name: Nagashima, Hiroki
  last_name: Nagashima
- first_name: Andrew G. M.
  full_name: Rankin, Andrew G. M.
  last_name: Rankin
- first_name: Christelle
  full_name: Anquetil, Christelle
  last_name: Anquetil
- first_name: Vytautas
  full_name: Klimavicius, Vytautas
  last_name: Klimavicius
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
- first_name: Gerd
  full_name: Buntkowsky, Gerd
  last_name: Buntkowsky
- first_name: Sylvie
  full_name: Derenne, Sylvie
  last_name: Derenne
- first_name: Olivier
  full_name: Lafon, Olivier
  last_name: Lafon
- first_name: Arnaud
  full_name: Huguet, Arnaud
  last_name: Huguet
- first_name: Frédérique
  full_name: Pourpoint, Frédérique
  last_name: Pourpoint
citation:
  ama: Venel F, Nagashima H, Rankin AGM, et al. Characterization of Functional Groups
    in Estuarine Dissolved Organic Matter by DNP-enhanced 15N and 13C Solid-State
    NMR. <i>Chemphyschem</i>. 2021;22(18):1907–1913. doi:<a href="https://doi.org/10.1002/cphc.202100334">10.1002/cphc.202100334</a>
  apa: Venel, F., Nagashima, H., Rankin, A. G. M., Anquetil, C., Klimavicius, V.,
    Gutmann, T., Buntkowsky, G., Derenne, S., Lafon, O., Huguet, A., &#38; Pourpoint,
    F. (2021). Characterization of Functional Groups in Estuarine Dissolved Organic
    Matter by DNP-enhanced 15N and 13C Solid-State NMR. <i>Chemphyschem</i>, <i>22</i>(18),
    1907–1913. <a href="https://doi.org/10.1002/cphc.202100334">https://doi.org/10.1002/cphc.202100334</a>
  bibtex: '@article{Venel_Nagashima_Rankin_Anquetil_Klimavicius_Gutmann_Buntkowsky_Derenne_Lafon_Huguet_et
    al._2021, title={Characterization of Functional Groups in Estuarine Dissolved
    Organic Matter by DNP-enhanced 15N and 13C Solid-State NMR}, volume={22}, DOI={<a
    href="https://doi.org/10.1002/cphc.202100334">10.1002/cphc.202100334</a>}, number={18},
    journal={Chemphyschem}, publisher={John Wiley &#38; Sons, Ltd}, author={Venel,
    Florian and Nagashima, Hiroki and Rankin, Andrew G. M. and Anquetil, Christelle
    and Klimavicius, Vytautas and Gutmann, Torsten and Buntkowsky, Gerd and Derenne,
    Sylvie and Lafon, Olivier and Huguet, Arnaud and et al.}, year={2021}, pages={1907–1913}
    }'
  chicago: 'Venel, Florian, Hiroki Nagashima, Andrew G. M. Rankin, Christelle Anquetil,
    Vytautas Klimavicius, Torsten Gutmann, Gerd Buntkowsky, et al. “Characterization
    of Functional Groups in Estuarine Dissolved Organic Matter by DNP-Enhanced 15N
    and 13C Solid-State NMR.” <i>Chemphyschem</i> 22, no. 18 (2021): 1907–1913. <a
    href="https://doi.org/10.1002/cphc.202100334">https://doi.org/10.1002/cphc.202100334</a>.'
  ieee: 'F. Venel <i>et al.</i>, “Characterization of Functional Groups in Estuarine
    Dissolved Organic Matter by DNP-enhanced 15N and 13C Solid-State NMR,” <i>Chemphyschem</i>,
    vol. 22, no. 18, pp. 1907–1913, 2021, doi: <a href="https://doi.org/10.1002/cphc.202100334">10.1002/cphc.202100334</a>.'
  mla: Venel, Florian, et al. “Characterization of Functional Groups in Estuarine
    Dissolved Organic Matter by DNP-Enhanced 15N and 13C Solid-State NMR.” <i>Chemphyschem</i>,
    vol. 22, no. 18, John Wiley &#38; Sons, Ltd, 2021, pp. 1907–1913, doi:<a href="https://doi.org/10.1002/cphc.202100334">10.1002/cphc.202100334</a>.
  short: F. Venel, H. Nagashima, A.G.M. Rankin, C. Anquetil, V. Klimavicius, T. Gutmann,
    G. Buntkowsky, S. Derenne, O. Lafon, A. Huguet, F. Pourpoint, Chemphyschem 22
    (2021) 1907–1913.
date_created: 2026-02-07T16:14:11Z
date_updated: 2026-02-17T16:12:56Z
doi: 10.1002/cphc.202100334
extern: '1'
intvolume: '        22'
issue: '18'
keyword:
- dynamic nuclear polarization
- 13C
- 15N
- dissolved organic matter
- Seine estuary
language:
- iso: eng
page: 1907–1913
publication: Chemphyschem
publication_identifier:
  issn:
  - 1439-4235; 1439-7641
publisher: John Wiley & Sons, Ltd
status: public
title: Characterization of Functional Groups in Estuarine Dissolved Organic Matter
  by DNP-enhanced 15N and 13C Solid-State NMR
type: journal_article
user_id: '100715'
volume: 22
year: '2021'
...