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Analysis of the geological control on the spatial distribution of potentially toxic concentrations of As and F- in groundwater on a Pan-European scale

Elena Giménez-Forcada 1, 2 Juan Antonio Luque-Espinar 2 María Teresa López-Bahut 2 Juan Grima-Olmedo 2 Jorge Jiménez-Sánchez 2 Carlos Ontiveros-Beltranena 2 José Ángel Díaz-Muñoz 2 Daniel Elster 3 Ferid Skopljak 4 Denitza Voutchkova 5 Birgitte Hansen 5 Klaus Hinsby 5 Jörg Schullehner 5, 6 Eline Malcuit 7 Laurence Gourcy 7 Teodóra Szőcs 8 Nóra Gál 8 Daði Þorbjörnsson 9 Katie Tedd 10 Dāvis Borozdins 11 Henry Debattista 12 Agnieszka Felter 13 Jolanta Cabalska 14 Anna Mikołajczyk 15 Ana Pereira 16 Jose Sampaio 16 Diana Perşa 17 Tanja Petrović Pantic 18 Nina Rman 19 Georgina Arnó 20 Ignasi Herms 20 Lars Rosenqvist 21 
Abstract : The distribution of the high concentrations of arsenic (As) and fluoride (F-) in groundwater on a Pan-European scale could be explained by the geological European context (lithology and structural faults). To test this hypothesis, seventeen countries and eighteen geological survey organizations (GSOs) have participated in the dataset. The methodology has used the HydroGeoToxicity (HGT) and the Baseline Concentration (BLC) index. The results prove that most of the waters considered in this study are in good conditions for drinking water consumption, in terms of As and/or F- content. A low proportion of the analysed samples present HGT≥ 1 levels (4% and 7% for As and F-, respectively). The spatial distribution of the highest As and/or F- concentrations (via BLC values) has been analysed using GIS tools. The highest values are identified associated with fissured hard rock outcrops (crystalline rocks) or Cenozoic sedimentary zones, where basement fractures seems to have an obvious control on the distribution of maximum concentrations of these elements in groundwaters.
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https://hal-brgm.archives-ouvertes.fr/hal-03846463
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Soumis le : jeudi 10 novembre 2022 - 10:40:42
Dernière modification le : mardi 15 novembre 2022 - 14:14:21

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Elena Giménez-Forcada, Juan Antonio Luque-Espinar, María Teresa López-Bahut, Juan Grima-Olmedo, Jorge Jiménez-Sánchez, et al.. Analysis of the geological control on the spatial distribution of potentially toxic concentrations of As and F- in groundwater on a Pan-European scale. Ecotoxicology and Environmental Safety, 2022, 247, pp.114161. ⟨10.1016/j.ecoenv.2022.114161⟩. ⟨hal-03846463⟩

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