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Fluorescence analysis allows to predict the oxidative capacity of humic quinones in dissolved organic matter: implication for pollutant degradation
BEAUGER, Aude
Environnements et Paléoenvironnements OCéaniques [EPOC]
Laboratoire de Géographie Physique et Environnementale [GEOLAB]
Université Clermont Auvergne [UCA]
Environnements et Paléoenvironnements OCéaniques [EPOC]
Laboratoire de Géographie Physique et Environnementale [GEOLAB]
Université Clermont Auvergne [UCA]
SLEIMAN, Mohamad
Lawrence Berkeley National Laboratory [Berkeley] [LBNL]
Nanomédecine, imagerie, thérapeutique - UFC (UR 4662) [NIT / NANOMEDECINE]
Institut de Chimie de Clermont-Ferrand [ICCF]
Lawrence Berkeley National Laboratory [Berkeley] [LBNL]
Nanomédecine, imagerie, thérapeutique - UFC (UR 4662) [NIT / NANOMEDECINE]
Institut de Chimie de Clermont-Ferrand [ICCF]
RICHARD, Claire
Interactions moléculaires et réactivité chimique et photochimique [IMRCP]
STMicroelectronics [Crolles] [ST-CROLLES]
Service de neurologie [Rouen]
Service de génétique [Rouen]
UNIROUEN - UFR Santé [UNIROUEN UFR Santé]
GeoRessources
Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Ponchaillou]
EDF [EDF]
Centre National de la Recherche Scientifique [CNRS]
Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques [GPMCND]
Institut de Chimie de Clermont-Ferrand [ICCF]
< Réduire
Interactions moléculaires et réactivité chimique et photochimique [IMRCP]
STMicroelectronics [Crolles] [ST-CROLLES]
Service de neurologie [Rouen]
Service de génétique [Rouen]
UNIROUEN - UFR Santé [UNIROUEN UFR Santé]
GeoRessources
Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Ponchaillou]
EDF [EDF]
Centre National de la Recherche Scientifique [CNRS]
Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques [GPMCND]
Institut de Chimie de Clermont-Ferrand [ICCF]
Article de revue
Ce document a été publié dans
Environmental Chemistry Letters. 2020-11-23
Springer Science and Business Media LLC
Résumé en anglais
AbstractDissolved organic matter (DOM) controls the degradation and sequestration of aquatic pollutants and, in turn, water quality. In particular, pollutant degradation is performed by oxidant species that are generated ...Lire la suite >
AbstractDissolved organic matter (DOM) controls the degradation and sequestration of aquatic pollutants and, in turn, water quality. In particular, pollutant degradation is performed by oxidant species that are generated by exposure of DOM to solar light, yet, since DOM is a very complex mixture of poorly known substances, the relationships between potential oxidant precursors in DOM and their oxydative capacity is poorly known. Here, we hypothesized that production of oxidant species could be predicted using fluorescence analysis. We analysed water samples from an alluvial plain by fluorescence spectroscopy; the three-dimensional spectra were then decomposed into seven individual components using a multi-way algorithm. Components include a protein-like fluorophore, e.g. tryptophan-like and tyrosine-like, three humic fluorophores, 2-naphthoxyacetic acid, and a by-product. We compared component levels with the ability of water samples to generate reactive species under solar light. The results show a strong correlation between reactive species production and the intensity of two humic-like fluorophores assigned to reduced quinones. Monitoring these fluorophores should thus allow to predict the ability of DOM degradation of pollutants in surface waters.< Réduire