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A Solid State NMR Investigation of Recent Marine Siliceous Sponge Spicules

Abstract : The composition of four recent siliceous marine sponge spicules was studied and compared. In particular, multinuclear (29Si, 13C, 31P) solid state nuclear magnetic resonance (NMR) allowed the characterization of both the mineral and organic constituents in a non-destructive manner. The silica network condensation was similar for all samples. The organic matter showed a similar pattern but varied in abundance as a function of the sponge group (Hexactinellida or Demospongiae) and sampling conditions (living or dead organisms). This indicates that the striking morphological differences observed at the macroscale for the various samples do not lead to significant fingerprints in the spectroscopic signatures of the mineral and organic constituents.
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Submitted on : Monday, May 2, 2016 - 5:27:53 PM
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Sylvie Masse, Andrzej Pisera, Guillaume Laurent, Thibaud Coradin. A Solid State NMR Investigation of Recent Marine Siliceous Sponge Spicules. Minerals, MDPI, 2016, 6 (1), pp.21. ⟨10.3390/min6010021⟩. ⟨hal-01310556⟩



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