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<dc:title xml:lang="en">Design of recyclable magnetic composites for the capture of organic and biological micropollutants and development of analytical methods for their quantification and monitoring</dc:title>
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<dc:subject xml:lang="fr">Dépollution</dc:subject>
<dc:subject xml:lang="fr">Hydrocarbures Aromatiques Polycycliques (HAP)</dc:subject>
<dc:subject xml:lang="fr">Surveillance</dc:subject>
<dc:subject xml:lang="fr">Analyse dans l'air et dans l'eau</dc:subject>
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<dc:subject xml:lang="fr">Séparation magnétique</dc:subject>
<dc:subject xml:lang="fr">Oxyde de fer</dc:subject>
<dc:subject xml:lang="fr">Graphène</dc:subject>
<dc:subject xml:lang="fr">Tannique acide</dc:subject>
<dc:subject xml:lang="fr">Nanocomposites</dc:subject>
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<dc:subject xml:lang="en">Depollution</dc:subject>
<dc:subject xml:lang="en">Polycyclic Aromatic Hydrocarbons (PAHs)</dc:subject>
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<dc:subject xml:lang="en">Analysis in air and water</dc:subject>
<dc:subject xml:lang="en">Adsorption</dc:subject>
<dc:subject xml:lang="en">Magnetic separation</dc:subject>
<dc:subject xml:lang="en">Iron oxide</dc:subject>
<dc:subject xml:lang="en">Graphene</dc:subject>
<dc:subject xml:lang="en">Tannic acid</dc:subject>
<dc:subject xml:lang="en">Nanocomposites</dc:subject>
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<dcterms:abstract xml:lang="fr">Les HAP sont des polluants dangereux et il est crucial de les mesurer et de les éliminer de l'environnement. Pour leur quantification dans l’air, deux méthodes ont été développées : 1) une méthode UHPLC-FLD/UV différée, très sensible et 2) une méthode TD-GC-FID en ligne transportable pour les HAP gazeux. Ceci nous a permis de mesurer leurs concentrations en phase particulaire dans l’air pendant 6 mois.Pour l'élimination des HAP dans l’eau, des matériaux absorbants ont été synthétisés par une voie polyol solvothermale, caractérisés et leurs mécanismes de synthèse étudiés : des nanocomposites à base de graphène/oxyde de fer (CN) ainsi que des nanostructures d'oxyde de fer avec et sans acide tannique. Les CN furent très efficaces (&gt;95.-99.95%) pour la captation du BaP. Ces absorbants se sont aussi révélés prometteurs et sélectifs pour l’adsorption de mélanges de différents HAPs et de particules organiques et inorganiques. Ils ont, en particulier les CN, montré un grand potentiel pour la dépollution des eaux polluées réelles avec une sélectivité pour certaines familles de polluants et également pour l'élimination de polluants biologiques (virus).</dcterms:abstract>
<dcterms:abstract xml:lang="en">PAHs are dangerous pollutants, and it is crucial to measure and eliminate them from the environment. For their quantification in air, two methods were developed: 1) a highly sensitive offline UHPLC-FLD/UV method, and 2) a transportable on-line TD-GC-FID method for gaseous PAHs. This enabled us to measure their concentrations in the particulate phase in the air over a period of 6 months.To eliminate PAHs from water, absorbent materials were synthesised using a solvothermal polyol process and characterised, and their synthesis mechanisms were studied: graphene/iron oxide (CN) nanocomposites and iron oxide nanostructures with and without tannic acid. The CNs were very effective (&gt;95-99.95%) in BaP removal. These absorbents also proved promising and selective for the adsorption of mixtures of different PAHs and organic and inorganic particles. In particular, CNs have shown great potential for the decontamination of real polluted water, with selectivity for certain families of pollutants, and also for the elimination of biological pollutants (viruses).</dcterms:abstract>
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