This work reports an ab initio study on the carbon (C), nitrogen (N), and sulphur (S) elemental and isotope compositions of the Padanian Plain sediments collected in the province of Ferrara (Northern Italy). The investigated sediments were already characterized by previous research that highlighted a bimodal provenance, as some sediments are from the Alpine chain and were conveyed to the plain by Po River, whereas others are from the Apennine chain and were conveyed to the plain by the Reno River. This information was obtained considering the concentration of heavy metals retrieved from hundreds of X-ray fluorescence analyses available in the literature, whereas CNS elemental and isotope compositions are unknown. These tracers are generally considered scarcely useful to identify the sediment provenance, as influenced by multiple environmental factors. However, this work challenges these assertions observing that 13C/12C, 15N/14N, 34S/32S are significantly different in Po and Reno River sediments. Our hypothesis is that the CNS geochemical signal is 1) mainly regulated by the organic fraction included in the alluvial sediments, and 2) these organic fraction have in turn a specific composition in the distinct source catchments. More in general, the presented data increase the knowledge on the local elemental and isotopic backgrounds. This is important because many pollutants contain significant CNS concentration and specific isotope composition. Therefore, they serve as baseline and will provide new tools to recognize possible anthropogenic anomalies in the studied area.

Carbon, nitrogen, and sulphur isotope analysis of the Padanian Plain sediments: Backgrounds and provenance indication of the alluvial components

Salani G. M.
Primo
;
Brombin V.
Secondo
;
Bianchini G.
Ultimo
2021

Abstract

This work reports an ab initio study on the carbon (C), nitrogen (N), and sulphur (S) elemental and isotope compositions of the Padanian Plain sediments collected in the province of Ferrara (Northern Italy). The investigated sediments were already characterized by previous research that highlighted a bimodal provenance, as some sediments are from the Alpine chain and were conveyed to the plain by Po River, whereas others are from the Apennine chain and were conveyed to the plain by the Reno River. This information was obtained considering the concentration of heavy metals retrieved from hundreds of X-ray fluorescence analyses available in the literature, whereas CNS elemental and isotope compositions are unknown. These tracers are generally considered scarcely useful to identify the sediment provenance, as influenced by multiple environmental factors. However, this work challenges these assertions observing that 13C/12C, 15N/14N, 34S/32S are significantly different in Po and Reno River sediments. Our hypothesis is that the CNS geochemical signal is 1) mainly regulated by the organic fraction included in the alluvial sediments, and 2) these organic fraction have in turn a specific composition in the distinct source catchments. More in general, the presented data increase the knowledge on the local elemental and isotopic backgrounds. This is important because many pollutants contain significant CNS concentration and specific isotope composition. Therefore, they serve as baseline and will provide new tools to recognize possible anthropogenic anomalies in the studied area.
Salani, G. M.; Brombin, V.; Natali, C.; Bianchini, G.
File in questo prodotto:
File Dimensione Formato  
CNS of Padanian sediments 12 08 2021-1.pdf

accesso aperto

Descrizione: Pre-print
Tipologia: Pre-print
Licenza: PUBBLICO - Pubblico con Copyright
Dimensione 1.44 MB
Formato Adobe PDF
1.44 MB Adobe PDF Visualizza/Apri
1-s2.0-S0883292721002614-main.pdf

solo gestori archivio

Descrizione: Full text editoriale
Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 6.05 MB
Formato Adobe PDF
6.05 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2473803
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact