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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 379, 113-117, 2018
https://doi.org/10.5194/piahs-379-113-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Pre-conference publication
05 Jun 2018
Sources and behavior of perchlorate ions (ClO4) in chalk aquifer of Champagne-Ardenne, France: preliminary results
Feifei Cao1, Jessy Jaunat1, Patrick Ollivier2, Benjamin Cancès1, Xavier Morvan1, Daniel Hubé2, Alain Devos1, Nicolas Devau2, Vincent Barbin1, and Pierre Pannet3 1Université de Reims Champagne-Ardenne – GEGENAA – EA 3795, 2 esplanade Roland Garros, 51100 Reims, France
2BRGM, 3 av. C. Guillemin, BP 36009, 45060 Orléans Cedex 2, France
3BRGM, Pôle technologique Henri Farman, 12 rue Clément Ader, 51100 Reims, France
Abstract. Perchlorate (ClO4) is an environmental contaminant of growing concern due to its potential human health effects and widespread occurrence in surface water and groundwater. Analyses carried out in France have highlighted the presence of ClO4 in drinking water of Champagne-Ardenne (NW of France), with two potential sources suspected: a military source related to the First World War and an agricultural source related to the past use of Chilean nitrates. To determine the sources of ClO4 in groundwater, major and trace elements, 2H and 18O, ClO3 and ClO4 ions and a list of 39 explosives were analyzed from 35 surface water and groundwater sampling points in the east of the city of Reims. ClO4 ions were found in almost all sampling points (32 out of 35) with a max value of 33 µg L−1. ClO4 concentrations were highest in groundwater ranging from 0.7 to 33 µg L−1 (average value of about 6.2 µg L−1) against from  <  0.5 to 10.2 µg L−1 in surface water (average value of about 2.7 µg L−1). Most of the water samples showing high ClO4 levels (>  4 µg L−1) were collected near a military camp, where huge quantities of ammunitions have been used, stored and destroyed during and after the First World War.
Citation: Cao, F., Jaunat, J., Ollivier, P., Cancès, B., Morvan, X., Hubé, D., Devos, A., Devau, N., Barbin, V., and Pannet, P.: Sources and behavior of perchlorate ions (ClO4) in chalk aquifer of Champagne-Ardenne, France: preliminary results, Proc. IAHS, 379, 113-117, https://doi.org/10.5194/piahs-379-113-2018, 2018.
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Perchlorate can be a health concern due to its its ability to disrupt the thyroid gland's use of iodine. High perchlorate concentrations have been reported in chalk groundwater of Champagne-Ardennes (France). Water samples at 35 sampling points were analysed in order to determine the sources and behaviors of perchlorate. The preliminary results shows that most of the water samples showing high perchlorate levels were collected near a military camp, representing a potential source of perchlorate.
Perchlorate can be a health concern due to its its ability to disrupt the thyroid gland's use of...
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