Influence of effluent organic matter on copper speciation and bioavailability in rivers under strong urban pressure
| Autor: | M. Saad, C. Soares Pereira, M. Troupel, Gilles Varrault, Z. Matar, Ghassan Chebbo, Vincent Rocher, Emmanuelle Uher, C. Gourlay-Francé, L. Boudahmane |
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| Přispěvatelé: | laboratoire Eau Environnement et Systèmes Urbains (LEESU), AgroParisTech-École des Ponts ParisTech (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Hydrosystèmes et bioprocédés (UR HBAN), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), laboratoire Electrochimie, Catalyse et Synthèse Organique (LECSO), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Hydrosystèmes et Bioprocédés (UR HBAN) |
| Rok vydání: | 2015 |
| Předmět: |
Paris
HYDROPHILIC ORGANIC MATTER 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis media_common.quotation_subject chemistry.chemical_element Wastewater 010501 environmental sciences TRACE METALS 01 natural sciences Upstream and downstream (DNA) Rivers Dissolved organic carbon Humans Environmental Chemistry Organic matter [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology Effluent 0105 earth and related environmental sciences media_common chemistry.chemical_classification EFDOM Environmental engineering Biotic Ligand Model General Medicine Pollution Copper 6. Clean water DISSOLVED ORGANIC MATTER Speciation chemistry Metals 13. Climate action Environmental chemistry [SDE]Environmental Sciences BIOTIC LIGAND MODEL Surface water Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Science and Pollution Research Environmental Science and Pollution Research, Springer Verlag, 2015, ⟨10.1007/s11356-015-5110-6⟩ Environmental Science and Pollution Research, Springer Verlag, 2015, pp.14. ⟨10.1007/s11356-015-5110-6⟩ |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-015-5110-6 |
| Popis: | International audience; This study focuses on spatiotemporal variations in the type of dissolved organic matter (DOM) and copper binding ability both upstream and downstream of Paris. It also compares the relative influence of both natural DOM upstream of Paris and effluent dissolved organic matter (EfDOM) output from a wastewater treatment plant (WWTP) on trace metal speciation and bioavailability in aquatic systems. In addition to the typical high- and low-affinity binding sites, a third family of very high-affinity binding sites has been highlighted for EfDOM. In receiving waters downstream of Paris during low-flow periods, the percentage of high- and very high-affinity sites originating from EfDOM reaches nearly 60 %. According to the speciation computation, the free copper concentration upstream of Paris exceeds the downstream Paris concentration by a factor of 2 to 4. As regards copper bioavailability, the highest EC50tot values were observed for EfDOM and downstream DOM, with a very low aromaticity and low UV absorbance. This finding suggests that specific ultraviolet absorbance (SUVA) is unlikely to be useful in assessing metal speciation and toxicity in aquatic systems subject to strong urban pressures. These results also highlight that the copper speciation computation for surface water exposed to considerable human pressures should include not only the humic and/or fulvic part of dissolved organic carbon but more hydrophilic fractions as well, originating for example from EfDOM. © 2015 Springer-Verlag Berlin Heidelberg |
| Databáze: | OpenAIRE |
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