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Mourier, Brice; Labadie, Pierre; Desmet, Marc; Grosbois, Cécile; Raux, Julie; Debret, Maxime; Copard, Yoann; Pardon, Patrick; Budzinski, Hélène; Babut, Marc (2019): Spatial and temporal trends of per- and polyfluoroalkyl substances (PFASs) in sediments from the Rhône River near Lyon [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.903773, Supplement to: Mourier, B et al. (2019): Combined spatial and retrospective analysis of fluoroalkyl chemicals in fluvial sediments reveal changes in levels and patterns over the last 40 years. Environmental Pollution, 253, 1117-1125, https://doi.org/10.1016/j.envpol.2019.07.079

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Abstract:
Bed sediments and a dated sediment core were collected upstream and downstream from the city of Lyon (France) to assess the spatial and temporal trends of contamination by per- and polyfluoroalkyl substances (PFASs) in this section of the Rhône River. Upstream from Lyon, concentrations of total PFASs (tPFASs) in sediments are low (between 0.19 and 2.6 ng g-1 dry weight - dw), being characterized by a high proportion of perfluorooctane sulfonate (PFOS). Downstream from Lyon, and also from a fluoropolymer manufacturing plant, tPFASs concentrations reach 48.7 ng g-1 dw. A gradual decrease of concentrations is reported at the coring site further downstream (38 km). Based on a dated sediment core, the temporal evolution of PFASs is reconstructed from 1984 to 2013. Prior to 1987, tPFASs concentrations were low (≤ 2 ng g-1 dw), increasing to a maximum of 51 ng g-1 dw in the 1990s and then decreasing from 2002 to the present day (~10 ng g-1 dw). In terms of the PFAS pattern, the proportion of perfluoroalkyl sulfonic acids (PFSAs) has remained stable since the 1980s (~10%), whereas large variations are reported for carboxylic acids (PFCAs). Long chain- (C>8) PFCAs characterized by an even number of perfluorinated carbons represent about 74% of the total PFAS load until 2005. However, from 2005 to 2013, the relative contribution of long chain- (C>8) PFCAs with an odd number of perfluorinated carbons reaches 80%. Such changes in the PFAS pattern likely highlight a major shift in the industrial production process. This spatial and retrospective study provides valuable insights into the long-term contamination patterns of PFAS chemicals in river basins impacted by both urban and industrial activities.
Keyword(s):
bed sediment; Per- and polyfluoroalkyl substances; Rhône River; Sediment core; spatial trend; temporal trend
Coverage:
Median Latitude: 45.578479 * Median Longitude: 4.839126 * South-bound Latitude: 45.471117 * West-bound Longitude: 4.773872 * North-bound Latitude: 45.849456 * East-bound Longitude: 5.213294
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Mourier, B; Labadie, P; Desmet, M et al. (2019): Spatial and temporal trends of per- and polyfluoroalkyl substances (PFASs) in bed sediments of a section of the Rhône River. https://doi.org/10.1594/PANGAEA.903771
  2. Mourier, B; Labadie, P; Desmet, M et al. (2019): Spatial and temporal trends of per- and polyfluoroalkyl substances (PFASs) in a sediment core from the Rhône River. https://doi.org/10.1594/PANGAEA.903772