| Title: |
Spatial and temporal analysis of the sedimentary record of 238U and 232Th series in seven major French rivers: the role of geology and NORM occurrence |
| Authors: |
Zebracki, Mathilde; Seignemartin, Gabrielle; de Vismes Ott, Anne; Montargès-Pelletier, Emmanuelle; Meyer, Anne; Coynel, Alexandra; Gréau, Claire; Eyrolle, Frederique |
| Contributors: |
Laboratoire de recherche sur les transferts dans les sites et sols pollués (IRSN/PSE-ENV/SPDR/LT2S); Service des Pollutions et des Déchets Radioactifs (IRSN/PSE-ENV/SPDR); Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN); Environnement, Ville, Société (EVS); École normale supérieure de Lyon (ENS de Lyon); Université de Lyon-Université de Lyon-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE); Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML); Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon); Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS)-Approches Littéraires, Linguistiques et Historiques des Sources (ALLHiS); Université Jean Monnet - Saint-Étienne (UJM)-Université Jean Monnet - Saint-Étienne (UJM); Laboratoire de métrologie de la radioactivité dans l'environnement (IRSN/PSE-ENV/SAME/LMRE); Service d'analyses et de métrologie de l'environnement (IRSN/PSE-ENV/SAME); Laboratoire Interdisciplinaire des Environnements Continentaux (LIEC); Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS); Environnements et Paléoenvironnements OCéaniques (EPOC); École Pratique des Hautes Études (EPHE); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS); Bureau d'étude et d'expertise du radon (IRSN/PSE-ENV/SERPEN/BERAD); Service de Radioprotection des Populations et de l’Environnement (IRSN/PSE-ENV/SERPEN); Laboratoire de recherche sur les transferts des radionucléides au sein des écosystèmes aquatiques (IRSN/PSE-ENV/STAAR/LRTA); Service des Transferts Atmosphériques et Aquatiques des Radionucléides (IRSN/PSE-ENV/STAAR); Institut de Radioprotection et de Sûreté Nucléaire - IRSN (France); Norwegian Radiation and Nuclear Safety Authority (DSA) |
| Source: |
6th International Conference on Radioecology & Environmental Radioactivity (ICRER 2024); https://hal.science/hal-05480081; 6th International Conference on Radioecology & Environmental Radioactivity (ICRER 2024), Norwegian Radiation and Nuclear Safety Authority (DSA); Institut de Radioprotection et de Sûreté Nucléaire - IRSN (France), Nov 2024, Marseille, France; https://www.iur-uir.org/en/events/id-129-icrer-2024-6th-international-conference-on-radioecology-environmental-radioactivity |
| Publisher Information: |
CCSD |
| Publication Year: |
2024 |
| Collection: |
Université Jean Monnet – Saint-Etienne: HAL |
| Subject Terms: |
[SDE]Environmental Sciences |
| Subject Geographic: |
Marseille; France |
| Description: |
International audience ; Rivers constitute the receptacle for solid particles and associated contaminants originating from soil erosion and leaching. A wide range of particle reactive contaminants follows the transferring road towards the marine environment and part of them accumulate temporary or definitively within sediment repositories. Well preserved sedimentary riverine deposits provide unique tool to reconstruct current and historical contamination events at the river catchment scale.In France, the total catchment area of seven major rivers covers 78 % of the metropolitan territory and displays differences in geology and basin history. Although sedimentary archives have been investigated in major French rivers for common stable trace metals and organic pollutants (e.g., Desmet et al., 2012; Dendievel et al. 2022), there is a lack of knowledge regarding the spatial and temporal distribution of naturally occurring radionuclides from 238U and 232Th series. This study examines the distribution of these radionuclides in sedimentary archives collected from seven major rivers of France (Figure 1a): the Garonne, Loire, Meuse, Moselle, Rhin, Rhone and Seine rivers. The role of geology was assessed based on the spatial analysis of the mapped U distribution of soils in France (Ielsch et al. 2017). The occurrence of naturally occurring radioactive material (NORM) was estimated through the temporal analysis of radionuclide content coupled to the economic history of river basin, and the radioactive disequilibrium between radionuclides from 238U and 232Th series.Sediment cores were collected in 2020, 2021 and 2022, with a total core length varying from 82 to 419 cm. A total of 308 sediment samples was analyzed for gamma-emitter radionuclides by gamma spectrometry and for stable trace elements by ICP-MS after a digestion step. Based on 210Pb and 137Cs radioactive methods, the sediment cores were dated in a parallel study (Eyrolle et al., under review).The sediment of the seven French rivers displayed different U content ... |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-05480081 |
| Accession Number: |
edsbas.1CDB371 |
| Database: |
BASE |