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| Registros recuperados: 59 | |
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| Larreta, Joana; Amouroux, Isabelle; Belzunce Segarra, Maria Jesus; Bersuder, Philippe; Bettoschi, Alexandre; Bolam, Thi; Caetano, Miguel; Carvalho, Ines; Portela Correia Dos Santos Romao, Margarida Maria; Franco, Javier; Gonzalez, Jean-louis; Guesdon, Stephane; Marras, Barbara; Mchugh, Brendan; Menchaca, Iratxe; Menet-nedelec, Florence; Merkel, Daniel; Millan Gabet, Vanessa; Montero, Natalia; Nolan, Martin; Perceval, Olivier; Regan, Fiona; Robinson, Craig; Rodrigo Sanz, Marta; Rodriguez, José German; Rosa, Nuna; Schintu, Marco; White, Blanaid. |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00620/73186/72375.pdf |
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| Fouilland, E.; Trottet, A.; Bancon-montigny, C.; Bouvy, M.; Le Floc'H, E.; Gonzalez, Jean-louis; Hatey, E.; Mas, S.; Mostajir, B.; Nouguier, J.; Pecqueur, D.; Rochelle-newall, E.; Rodier, C.; Roques, C.; Salles, C.; Tournoud, M. -g.; Vidussi, F.. |
| Over half of the total nitrogen, phosphorus, silicate and dissolved organic carbon (DOC) loading was discharged from the Wile River into the Thau Lagoon waters within the first five days of what was considered to be the autumn flash flood period. Such loads represented about 8% and 3% of the yearly averaged total nitrogen and phosphorus load in Thau Lagoon, respectively. Although this event affected >20% of the total lagoon volume, river trace metal loads contributed apparently only weakly to the increase in labile trace metal concentrations in the lagoon surface waters. Differences between theoretical dilution values and observed values were also noticed for phosphate, silicate and dissolved organic carbon (DOC) concentrations. DOC losses (10-50%)... |
| Tipo: Text |
Palavras-chave: River discharge; Phytoplankton and bacteria production; DIN uptake rates; Metal contaminants; Mediterranean coastal waters. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00130/24165/22492.pdf |
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| Abarnou, Alain; Bocquene, Gilles; Champin, Maryline; Durand, Gaetane; Gonzalez, Jean-louis; Le Moigne, Morgan; Masson, Jean-claude; Priou, Pierre; Tixier, Celine. |
| This study contributes to inventory programme on emerging pollutants in French waters and to the general reflection which will enable to update the list of relevant substnaces to be included in the new monitoring programmes to come. This work concerns the coastal part of the inventory programme on marine waters and sediments of France and five overseas french departments (OFD). In this goal, passive sampling techniques and direct extraction techniques have been tested through the implementation of in situ systems integrators POCIS (Polar Organic Chemical Integrative Sampler) and the extraction by SBSE bars (Stir bar sorptive extraction) directly in the waters sampled. Finally, analyzes of sediment completed the acquisition of data. Arount 40 stations were... |
| Tipo: Text |
Palavras-chave: Eaux littorales; Eaux côtières; Sédiment; Métropole; DOM; Pollution; Substances chimiques; POCIS; SBSE; Coastal waters; Sediment; France; Overseas french departments; Pollution; Chemicals contaminants; POCIS; SBSE. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00259/36994/35483.pdf |
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| Rodríguez, Jose German; Amouroux, Isabelle; Belzunce-segarra, María Jesús; Bersuder, Philippe; Bolam, Thi; Caetano, Miguel; Carvalho, Inês; Correia Dos Santos, Margarida; Fones, Gary R.; Gonzalez, Jean-louis; Guesdon, Stephane; Larreta, Joana; Marras, Barbara; Mchugh, Brendan; Menet-nédélec, Florence; Menchaca, Iratxe; Gabet, Vanessa Millán; Montero, Natalia; Nolan, Martin; Regan, Fiona; Robinson, Craig D.; Rosa, Nuno; Sanz, Marta Rodrigo; Schintu, Marco; White, Blánaid; Zhang, Hao. |
| The current study evaluates the effect of seawater physico-chemical characteristics on the relationship between the concentration of metals measured by Diffusive Gradients in Thin films (DGT) passive samplers (i.e., DGT-labile concentration) and the concentrations measured in discrete water samples. Accordingly, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used to measure the total dissolved metal concentrations in the discrete water samples and the labile metal concentrations obtained by DGT samplers; additionally, lead and cadmium conditional labile fractions were determined by Anodic Stripping Voltammetry (ASV) and total dissolved nickel was measured by Cathodic Stripping Voltammetry (CSV). It can be concluded that, in general, the median... |
| Tipo: Text |
Palavras-chave: EU Water Framework Directive; Diffusive Gradients in thin-films (DGT); Passive samplers. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/80043/83034.pdf |
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| Menet-nedelec, Florence; Gonzalez, Jean-louis; Maheux, Frank; Simon, Benjamin. |
| In the scope of the Water Framework Directive (WFD, 2000/60/EC) implementation, the aim of this work was to compare the response of different emerging tools to evaluate the chemical status of water bodies in Normandy coastal waters (France). These tools included passive samplers foreseen in future evaluation campaigns in France as a replacement for bulk seawater sampling (i.e. Diffusive Gradient in Thin films (DGT), and Polar Organic Chemical Integrative Sampler (POCIS)). They were deployed at three contrasted sites in terms of pollution level along the Normandy coast, simultaneously to mussel caging, in which three common biomarkers were analysed at the end of the experiment. This work highlighted the operational challenge of deploying passive samplers... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00403/51494/52093.pdf |
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| Andral, Bruno; Gonzalez, Jean-louis; Cuet, Pascale; Bigot, Lionel; Turquet, Jean; Nicet, Jean Benoit. |
| Les travaux réalisés ont permis d’obtenir des informations pertinentes pour accompagner le programme lié à la mise en œuvre de la DCE en milieu marin, notamment le volet lié à la surveillance du compartiment biologique. Les résultats ont confirmé que la zone récifale devait faire l’objet d’une approche spécifique, compte tenu de la particularité de cet écosystème soumis à des apports en pesticides et surtout en nitrates d’origine aquifère. Des indicateurs permettent de suivre ce type de pression notamment le δ15N et le rapport C:N dans des espèces algales devraient être rapidement opérationnels. Les pressions exercées sur le corail peuvent être également suivies grâce notamment à des méthodes d’investigations réalisées sur certaines espèces comme les... |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00028/13914/11084.pdf |
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| Gonzalez, Jean-louis. |
| Les campagnes de mise en place d'échantillonneurs passifs pour tester leur opérationnalité à "grande échelle" (façade méditerranéenne, La Réunion, Mayotte, Guyane) ont impliqué de former ponctuellement les "acteurs terrain" pour transférer ces techniques localement et de démarrer la réalisation d'un "Guide terrain". L'expérience acquise grâce à ces différentes campagnes a permis de mettre en place une série de formations (5 au cours de l'année 2011). Ces formations ont été réalisées par "regroupements géographiques" (Atlantique-Manche, Méditerranée) et localement dans les DOMs (Martinique, Guadeloupe, Guyane). Ces journées de formation avaient pour objectif de transférer l'expérience pratique acquise aux acteurs locaux. La formation est basée sur les... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00083/19458/17072.pdf |
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| Miege, C.; Mazzella, N.; Schiavone, S.; Dabrin, A.; Berho, C.; Ghestem, J. -p.; Gonzalez, C.; Gonzalez, Jean-louis; Lalere, B.; Lardy-fontan, S.; Lepot, B.; Munaron, Dominique; Tixier, Celine; Togola, A.; Coquery, M.. |
| Tipo: Text |
Palavras-chave: Intercomparison exercise; Marine Strategy Framework Directive (MSFD); Metal; Passive sampling; Pesticide; Polar organic chemical integrative sampler (POCIS); Polycyclic aromatic hydrocarbon (PAH); Priority chemical; Surface water; Water Framework Directive (WFD). |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00077/18853/16597.pdf |
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| Thouvenin, Benedicte; Gonzalez, Jean-louis. |
| Within the framework of the "Contaminants cycle and modeling" project of the BE department ("Biogeochemistry and Ecotoxicology") in Ifremer, two chemical contaminant modeling software were developed between 1998 and 2011 (Gonzalez JL, 2017): the MORGAN model (Model behavior of ORGANic contaminants in an aquatic environment) and the MOCO model (Surface Complexation MOdel for metallic COntaminants). These two models had been brought together in a single "zero-dimensional" software (known as MOMO), which made it possible to simulate the various processes affecting the behavior of chemical contaminants in a homogeneous mass of water (biodegradation, adsorption/desorption, photolysis, hydrolysis, volatilization, surface complexation, cation exchange,... |
| Tipo: Text |
Palavras-chave: Modelisation; Biogeochimie; Contaminants métalliques et organiques; Spéciation; Modeling; Biochemical; Trace metals - organic contaminants; Speciation. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00686/79771/82993.pdf |
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| Tapie, Nathalie; Munaron, Dominique; Gonzalez, Jean-louis; Budzinski, Helene. |
| With the new European legislation (the Water Framework Directive, 2000/60/EC), the decision makers responsible for the assessment of the environmental contamination require simple monitoring tools. Passive sampling methods seem to be promising tools for the sampling of polar organic compounds in water, especially in marine waters where important dilutions and low concentrations are usual. They are taking into account the temporal variability and integrating the contamination over period of time. This work presents a study, on a large scale, of the contamination of French Mediterranean coastal waters realized in partnership with the Water Agency Rhône Méditerranée Corse (AERMC), and Coastal Water Quality Offices (CQEL). |
| Tipo: Text |
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| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00031/14204/11473.pdf |
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| Bouchoucha, Marc; Tomasino, Corinne; Amouroux, Isabelle; Andral, Bruno; Brach-papa, Christophe; Briand, Marine; Buchet, Remi; Delmas, Lucile; Galgani, François; Gonzalez, Jean-louis; Grouhel-pellouin, Anne; Mauffret, Aourell; Mille, Tiphaine; Munaron, Dominique; Ponzevera, Emmanuel; Wessel, Nathalie; Boissery, Pierre. |
| Ce rapport fait le bilan de la surveillance de la contamination chimique opérée par l’Ifremer, en partenariat avec l’agence de l’eau Rhône Méditerranée Corse, entre 1998 et 2018. Il présente sur la forme de graphiques et de cartes les principaux résultats obtenus durant cette période ainsi que l’évolution des méthodes et des stratégies de surveillance des eaux côtières de Méditerranée. |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00673/78554/80744.pdf |
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| Gonzalez, Jean-louis; Munaron, Dominique; Andral, Bruno; Sargian, Peggy; Tomasino, Corinne; Guyomarch, J.; Van Ganse, S.. |
| Dans le périmètre de la Directive Cadre Européenne sur l’Eau (DCE), une campagne menée entre mars et avril 2009 (N.O. "L’Europe") a permis d'évaluer la qualité des eaux côtières méditerranéennes françaises. Les objectifs étaient de compléter les résultats acquis en 2006, de déterminer, grâce en grande partie à la mise en oeuvre de stations artificielles de moules (réseau RINBIO), la contamination chimique de l’eau. Afin de pouvoir mesurer les concentrations de contaminants chimiques (métaux composés organiques hydrophobes et hydrophiles), des échantillonneurs passifs (DGT, SBSE et POCIS) ont également été utilisés au cours de cette campagne. Les données obtenues ont contribué à la caractérisation des masses d'eau par rapport à certains contaminants sur... |
| Tipo: Text |
Palavras-chave: Méditerranée; DCE; Contaminants chimiques (métaux et organiques); Échantillonneurs passifs; DGT; POCIS; SBSE. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00035/14620/11899.pdf |
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| Gonzalez, Jean-louis; Thouvenin, Benedicte; Dange, Catherine; Chiffoleau, Jean-francois; Boutier, Bernard. |
| The role of particles in the fate and speciation of trace metals in macrotidal estuaries was studied using a surface complexation model (MOCO). Cadmium was selected as the target metal contaminant due to its reactivity in estuaries: cadmium behavior is mainly controlled by heterogeneous processes (sorption/desorption) related to salinity and suspended matter gradients. Various scenarios of suspended matter distribution according to salinity were simulated. The impact of surface properties (specific surface area, density of surface sites, acido-basic properties, and complexation constant) was evaluated using data collected on particles from the Gironde, Loire, and Seine estuaries. Our results show that particle surface properties, evaluated on the basis... |
| Tipo: Text |
Palavras-chave: Turbidity maximum; Speciation; Sorption; Particles; Modeling; Macrotidal estuaries; Cadmium. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2005.pdf |
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| Dabrin, A.; Ghestem, J. -p.; Uher, E.; Gonzalez, Jean-louis; Allan, I. J.; Schintu, M.; Montero, N.; Balaam, J.; Peinerud, E.; Miege, C.; Coquery, M.. |
| Passive sampling devices (PS) are widely used for pollutant monitoring in water, but estimation of measurement uncertainties by PS has seldom been undertaken. The aim of this work was to identify key parameters governing PS measurements of metals and their dispersion. We report the results of an in situ intercomparison exercise on diffusive gradient in thin films (DGT) in surface waters. Interlaboratory uncertainties of time-weighted average (TWA) concentrations were satisfactory (from 28% to 112%) given the number of participating laboratories (10) and ultra-trace metal concentrations involved. Data dispersion of TWA concentrations was mainly explained by uncertainties generated during DGT handling and analytical procedure steps. We highlight that DGT... |
| Tipo: Text |
Palavras-chave: DGT; Uncertainty; Blank; Continental waters; Coastal waters. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00294/40560/39614.pdf |
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| Turquet, Jean; Nicet, Jean Benoit; Cambert, Harold; Denis, Yves; Gonzalez, Jean-louis; Bigot, Lionel; Guyomarch, Julien; Budzinski, Helene; Tapie, Nathalie; Jamon, Alban; Pribat, B. |
| Le tome 2 de l‘étude de « définition des réseaux de surveillance de la qualité des masses d’eau côtières de l’île de Mayotte », présente sous forme cartographique les données bancarisées sous format MapInfo. Seules les études intéressantes vis à vis de la DCE et disponibles ont été référencées et prises en compte dans cet exercice (cf. références bibliographique du tome 2). Ce premier exercice de bancarisation, ne se veut pas exhaustif, et devra faire l’objet d’entretiens, d’ajouts réguliers. |
| Tipo: Text |
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| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00035/14622/11901.pdf |
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| Registros recuperados: 59 | |
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