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Contamination des eaux pluviales par les micropolluants: avancées du projet INOGEV

Abstract : This study aimed at i) providing for a large range of pollutants (n=77) information on their occurrence and concentration ranges in stormwater, ii) assessing the land use influence on stormwater quality and iii) analyzing the contribution of total atmospheric fallout (TAF) and endogenous sources to this contamination. Additionally, for poorly documented pollutants such as nonylphenol and octylphenol ethoxylates (NPnEO and OPnEO), this study reported for the first time levels for some new concerning metals (As, Ti, Cr, V) and organic pollutants such as polybromodiphenylethers (PBDEs), some pesticides and bisphenol A (BPA). For most of the pollutants, the stormwater quality at the outlet of three urban catchments exhibiting a different land use patterns did not significantly differ, suggesting that land use does no significantly influence the stormwater micropollutant contamination. No significant difference in terms of partitioning between all sites was also observed, indicating the not site-dependence. Finally, the contributions of TAF to stormwater contamination for micropollutants were rather low or very low. This underlines not only for PAHs as previously demonstrated in the literature but also for a larger range of molecules such as BPA, NPnEO, OPnEO and PBDEs a high local production related to the leaching of urban surfaces, buildings and vehicles. Knowledge gained in this study may be used soon to elaborate relevant decision support tools for i) urban stormwater practitioners and/or ii) watershed managers to reduce stormwater pollutant discharges
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Submitted on : Wednesday, May 23, 2018 - 10:01:26 PM
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Johnny Gasperi, Christel Sebastian, Véronique Ruban, Mélissa Delamain, Stéphane Percot, et al.. Contamination des eaux pluviales par les micropolluants: avancées du projet INOGEV. Techniques Sciences Méthodes , ASTEE/EDP Sciences, 2017, pp.51-66. ⟨10.1051/tsm/201778051⟩. ⟨hal-01581007⟩



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