Fate of trace organic compounds in the hyporheic zone: influence of retardation, the benthic bio-layer and organic carbon
| Autor: | Anke Putschew, Jonas L. Schaper, Malte Posselt, Joerg Lewandowski, Anna Jaeger, Gabriel Singer, Camille Bouchez, Gunnar Nuetzmann |
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| Přispěvatelé: | Technische Universität Berlin (TU), Leibniz Institute of Freshwater Ecology & Inland Fisheries, Stockholm University, Géosciences Rennes (GR), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Humboldt University of Berlin, 641939, Horizon 2020 Framework Programme, GRK 2032/1, Deutsche Forschungsgemeinschaft, Technical University of Berlin / Technische Universität Berlin (TU), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Humboldt University Of Berlin, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Total organic carbon
Organic chemicals Chemistry Variable time chemistry.chemical_element Sorption General Chemistry 010501 environmental sciences 01 natural sciences Carbon 6. Clean water Berlin Rivers Benthic zone [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Germany Environmental chemistry Dissolved organic carbon [SDE]Environmental Sciences Environmental Chemistry Hyporheic zone Organic Chemicals 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science and Technology Environmental Science and Technology, American Chemical Society, 2019, 53 (8), pp.4224-4234. ⟨10.1021/acs.est.8b06231⟩ Environmental Science and Technology, 2019, 53 (8), pp.4224-4234. ⟨10.1021/acs.est.8b06231⟩ Environmental Science & Technology |
| ISSN: | 0013-936X 1520-5851 |
| Popis: | International audience; The fate of 28 trace organic compounds (TrOCs) was investigated in the hyporheic zone (HZ) of an urban lowland river in Berlin, Germany. Water samples were collected hourly over 17 h in the river and in three depths in the HZ using minipoint samplers. The four relatively variable time series were subsequently used to calculate first-order removal rates and retardation coefficients via a one-dimensional reactive transport model. Reversible sorption processes led to substantial retardation of many TrOCs along the investigated hyporheic flow path. Some TrOCs such as dihydroxy-carbamazepine, O-desmethylvenlafaxine and venlafaxine were found to be stable in the HZ. Others were readily removed with half-lives in the first 10 cm of the HZ ranging from 0.1±0.01 h for iopromide to 3.3±0.3 h for tramadol. Removal rate constants of the majority of reactive TrOCs were highest in the first 10 cm of the HZ, where removal of biodegradable dissolved organic matter was also highest. Because conditions were oxic along the top 30 cm of the investigated flow path we attribute this finding to the high microbial activity typically associated with the shallow HZ. Frequent and short vertical hyporheic exchange flows could therefore be more important for reach-scale TrOC removal than long, lateral hyporheic flow paths |
| Databáze: | OpenAIRE |
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