Consulta: subjectFacets:"PCB"
Registros recuperados: 15
Data/hora: 16/06/2024 15:34:39

Organic micropollutants (PAHs, PCBs, pesticides) in seaweeds of the lagoon of Venice
Provedor de dados: 5
Autores: Pavoni, B; Caliceti, M; Sperni, L; Sfriso, A.
Samples of seven genera of seaweeds (Ulva, Gracilaria, Porphyra, Grateloupia, Undaria, Fucus and Cystoseira), which can be used as environmental biomonitors and in several applications like human alimentation, animal feeding and cosmetics, were collected in four sampling sites in the Lagoon of Venice in spring and autumn 1999 with the aim of determining the contamination due to organic micropollutants (polychlorinated biphenyls. PCBs; chlorinated pesticides; polycyclic aromatic hydrocarbons, PAHs). On an average, most of the considered species were contaminated especially by PAHs (up to 56 ng g(-1) dry wt. (dw)) whereas concentrations of PCBs and pesticides in macroalgal tissues were significantly correlated and did not exceed 5 ng g-1 dw. Among the...
Tipo: Text
Palavras-chave: Macro-algues; Lagune de Venise; HAP; PCB; Pesticides; Seaweeds; Venice Lagoon; PAHs; PCBs; Pesticides.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00321/43250/42981.pdf

Utilisation d’espèces halieutiques exploitées comme indicateurs de la contamination chimique en zone littorale
Provedor de dados: 5
Autores: Abarnou, Alain.
The concept of biological indicator relies upon the assumption that the contamination measured in biological tissues reflects that of the aquatic environment. This study aims to update the knowledge on contamination levels of various chemical contaminants in a few exploited fish species from various areas along the French coastline. The objective of the work is to evaluate the possibility of differentiating the various coastal zones according to the contamination levels measured in fish living there. Several groups of contaminants were followed: PCBs (marker PCBs and dioxin-like PCBs), dioxins (PCCDs and PCDFs), PBDEs, PFCs and total mercury). These contaminants were mainly measured in four fish species: the sea bass (Dicentrarchus labrax), the mackerel...
Tipo: Text
Palavras-chave: Espèces indicatrices; Poisson; Environnement marin; POP; PCB; Dioxines; PBDE; PFC; Biological indicators; Fishes; Marine environment; POPs; PCBs; Dioxins; PBDEs; PFCs.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00014/12475/9315.pdf

A multitracer approach to assess the spatial contamination pattern of hake (Merluccius merluccius) in the French Mediterranean
Provedor de dados: 5
Autores: Cresson, Pierre; Bouchoucha, Marc; Morat, Fabien; Miralles, Francoise; Chavanon, Fabienne; Loizeau, Veronique; Cossa, Daniel.
Chemical contamination levels and stable isotope ratios provide integrated information about contaminant exposure, trophic position and also biological and environmental influences on marine organisms. By combining these approaches with otolith shape analyses, the aim of the present study was to document the spatial variability of Hg and PCB contamination of the European hake (Merluccius merluccius) in the French Mediterranean, hypothesizing that local contaminant sources, environmental conditions and biological specificities lead to site-specific contamination patterns. High Hg concentrations discriminated Corsica (average: 1.36 ± 0.80 μg g− 1 dm) from the Gulf of Lions (average values &lt; 0.5 μg g− 1 dm), where Rhône River input caused high PCB burdens....
Tipo: Text
Palavras-chave: Hg; Mediterranean; Merluccius merluccius; Multiple ecotracers; PCB.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00270/38155/36309.pdf

Analyse et comparaison des niveaux de contamination en Polychlorobiphényles et pesticides organochlorés dans les foies de juvéniles de soles provenant de nourriceries du Golfe de Gascogne, de la Baie de Seine et de la Somme
Provedor de dados: 5
Autores: Jegaden, Marine.
Ce rapport de stage (2 mois et demi) traite du dosage de contaminants organiques, les Polychlorobiphényles (PCB) et les pesticides organochlorés chez les juvéniles de soles, dans différentes zones côtières de nourriceries sur le littoral français en Manche Est et dans le Golfe de Gascogne. Ces composés, hydrophobes, persistants et potentiellement bioaccumulables, se trouvent concentrés dans les tissus des poissons et en particulier dans le foie, riche en lipides. Les 16 congénères de PCB et les pesticides organochlorés sont dosés selon un protocole comprenant trois étapes : l'extraction, la purification par chromatographie d'adsorption pour séparer les composés, puis la quantification par chromatographie en phase gazeuse munie d'un détecteur à capture...
Tipo: Text
Palavras-chave: Soles; Nourriceries; PCB; Pesticides organochlorés; Bioaccumulation; Métabolisation; Réseau National d'Observation.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00444/55522/57110.pdf

Contamination de l'estuaire et de la baie de Seine par le PCB-Bilan des etudes
Provedor de dados: 5
Autores: Abarnou, Alain; Simon, S.
This report is a synthesis of data concerning PCB concentrations in water, sediments and organisms (Bivalvia, Malacostraca, Pisces). Water analysis shows that Seine River is the primordial factor affecting PCB dispersion in the bay. Sediment contamination is higher near estuary along Calvados coast. PCB levels in Mytilidae and in Pectinidae set the problem of polluant origin, dispersion and effects on estuarine organisms.
Tipo: Text
Palavras-chave: Bioaccumulation; Sediment pollution; Water pollution; PCB; Environmental impact.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1319.pdf

A steady-state model of PCB accumulation in dab food web
Provedor de dados: 5
Autores: Loizeau, Veronique; Menesguen, Alain.
A five-compartment steady-state food web model is proposed for the benthic food web leading to the dab. Three exposure pathways are considered in the description of accumulation by benthic animals: ingestion of particulate contaminants associated with either sediment or phytoplankton, and respiratory uptake of free dissolved contaminant in overlaying water. Application of the model to a simple food web in the Bay of Seine (Eastern Channel) indicates that : a) feeding is the principal route of contamination, especially for PCB which have more than four chlorine atoms in the molecule ; b) excretion and growth rates, phytoplankton lipid fraction and organic carbon content of sediment are the parameters which mostly determine the chemical bioaccumulation in...
Tipo: Text
Palavras-chave: MODEL; PCB; FOOD WEB; BENTHIC INVERTEBRATES; DAB.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00100/21127/18747.pdf

Le risque écotoxicologique dans le bassin de la Seine. Comprendre et diagnostiquer l'impact de la contamination sur les organismes
Provedor de dados: 5
Autores: Gourlay France, Catherine; Vincent-hubert, Francoise; Tusseau-vuillemin, Marie-helene; Sanchez, Wilfried; Geffard, Alain; Levi, Yves; Oziol, Lucie; Labadie, Pierre; Mouchel, Jean-marie; Raguet, Mireille; Thery, Sylvain.
Le PIREN-Seine s’intéresse à la présence dans le bassin versant de la Seine de contaminants d’origines agricole, industrielle et domestique depuis une vingtaine d’années. Ces polluants, qui se retrouvent parfois à des concentrations très faibles dans l’eau, peuvent avoir des impacts sur l’homme et l’environnement qui restent peu connus. La présence de ces substances toxiques suscite un intérêt majeur auprès des gestionnaires de la ressource comme des consommateurs. Les perturbations endocriniennes, les effets cancérigènes, la présence de résidus de médicaments sont autant de sujets d’inquiétude largement médiatisés et débattus.  Pour garantir la protection de la santé humaine et du milieu aquatique, la réglementation a défini des normes de qualité...
Tipo: Text
Palavras-chave: POLLUTION DE L'EAU; PCB; DIOXINE; PRODUIT PHYTOSANITAIRE; ORGANOCHLORE; ECOTOXICOLOGIE.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00185/29580/27924.pdf

METROC : évaluation des apports de contaminants chimiques de la métropole marseillaise au milieu marin
Provedor de dados: 5
Autores: Jany, Cassandre; Zebracki, Mathilde.
METROC program (part of the MEDICIS program about study and fate of the chemical contamination in Western Mediterranean Sea) focuses on sources and wastes issued by large metropolis, with the agglomeration of Marseille as a pilot site. This report presents the results of a sampling campaign in rivers and urban discharges in Marseille and on different types of contaminants (metals, PAH, PCB and PBDE) in dissolved and particulate phases, in dry and rain periods. Results show that concentrations of pollutants are greater in Aygalades river (metals and organic contaminants) and in Emissaire 2, sewer overflows and torrents. From the results of the analysis and discharge given by the DEA, we estimated partially the flows of pollutants which show that the first...
Tipo: Text
Palavras-chave: Mer Méditerranée; Littoral; Apports urbains; Marseille; Contamination chimique; Métaux; HAP; PCB; PBDE; Concentrations; Mediterranean Sea; Coast; Urban waste; Marseilles; Chemical contamination; Metals; PAH; PCB; PBDE; Concentration.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00116/22692/20431.pdf

Les polychlorobiphényles (PCB) en milieu marin : biogéochimie et écotoxicologie
Provedor de dados: 5
Autores: Marchand, Michel; Abarnou, Alain; Marcaillou-le Baut, Claire.
This report synthesizes the knowledge on the behaviour, bioconcentration processes and ecotoxicity ofPCB in the marine environment. Contamination levels of the French coasts are examined. Concentration levels, mechanisms andfluxes between geochemicai reservoirs are assessed. Emphasis is given on subiethai effects and toxicity mechanisms. Quality standards used in European Community countries are listed. Conclusions and recommendations for environmentai management and research are given.
Tipo: Text
Palavras-chave: PCB; Biogéochimie; Contamination; Écotoxicologie; PCBs; Biogeochemistry; Contamination; Ecotoxicology.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00148/25954/24045.pdf

Contamination chimique du milieu marin : de la mesure à l'évaluation des risques
Provedor de dados: 5
Autores: Abarnou, Alain.
This activity report entitled (“Chemical contamination of the marine environment: from measurement to risk assessment”) summarizes the main stages my career at Ifremer from November 1975 to june 2013. The first chapter deals with the seawater chlorination and chlorinated waters released into the sea, the identification and the conditions of the formation of various by-product of these processes. The second chapter concerns PCBs, their nature, their chemical analysis in environmental matrices. PCBs are considered as the best examples of persistant and bioaccumulable compounds and therefore, in all this report they are flagship contaminants to which other groups of studied substances are compared. The third chapter refers to studies performed within marine...
Tipo: Text
Palavras-chave: Chlore; Chloration de l’eau de mer; Oxydant; Bromoforme; Impact environnemental; Mécanismes réactionnels; Désinfection; Polluants organiques persistants (POP); PCB; Dioxines; HAP; PBDE; Chlordécone; Baie de Seine; Organismes marins; Moules; Poissons; Surveillance environnementale; Analyse; Bioaccumulation; Chlorine; Seawater chlorination; Oxidizing agent; Bromoform; Environmental impact; Reaction mechanisms; Disinfection; Persitsent organic pollutants (POPs); PCBs; Dioxins; PAHs; PBDEs; Chlordecone (kepone); Baie de Seine; Marine organisms; Mussel; Fish; Environmental monitoring; Chemical analysis; Bioaccumulation.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00168/27946/26237.pdf

Variability of PCB burden in 5 fish and sharks species of the French Mediterranean continental slope
Provedor de dados: 5
Autores: Cresson, Pierre; Fabri, Marie-claire; Miralles, Francoise Marco; Dufour, Jean-louis; Elleboode, Romain; Sevin, Karine; Mahe, Kelig; Bouchoucha, Marc.
Despite being generally located far from contamination sources, deep marine ecosystems are impacted by chemicals like PCB. The PCB contamination in five fish and shark species collected in the continental slope of the Gulf of Lions (NW Mediterranean Sea) was measured, with a special focus on intra- and interspecific variability and on the driving factors. Significant differences occurred between species. Higher values were measured in Scyliorhinus canicula, Galeus melastomus and Helicolenus dactylopterus and lower values in Phycis blennoides and Lepidorhombus boscii. These differences might be explained by specific abilities to accumulate and eliminate contaminant, mostly through cytochrome P450 pathway. Interindividual variation was also high and no...
Tipo: Text
Palavras-chave: Bioaccumulation; Continental slope; Gulf of Lions; PCB.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00313/42421/41790.pdf

Comportement chimique et geochimique des elements a l'état de traces dans l'estuaire de la Seine: Synthese des discussions
Provedor de dados: 5
Autores: Guegueniat, P.
In the synthesis of discussions about the chemistry of the Seine Bay, the author after a note on natural references for metal concentrations, speaks about fluorides, nutrients, PCB, and metallic elements. In conclusion some suggestions about pollutants transfer towards ecosystems link, are enumerated.
Tipo: Text
Palavras-chave: PCB; Fluorides; Chemical pollution; Trace metals; Food webs; Bioaccumulation; Biogeochemical cycle; Trace elements.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1303.pdf

Les polychlorobiphenyles ( PCB ) en Baie de Seine
Provedor de dados: 5
Autores: Abarnou, Alain.
PCB contamination and i ts relationship wi th suspended particulate matter (SPM) have been studied in water from the Seine estuary and the baie de Seine, in July 1985 and February 1986. PCB chromatograms are very similar and characterize a chronic contamination. PCB concentrations vary from 2 ng/l in the marine zone up to 210 ng/l in the estuary. SPM and PCB concentrations are weIl correlated. Highest PCB concentrations are measured in February due to higher SPM inputs mainly made of finer particles.
Tipo: Text
Palavras-chave: PCB; Seine; Fleuve; Estuaire; Baie; Matières en suspension; PCB; Seine; River; Estuary; Bay; Suspended particulate matter.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00138/24924/23020.pdf

Zones conchylicoles de l'Aven, du Bélon et du Merrien : Bilan de 15 ans de surveillance
Provedor de dados: 5
Autores: Monfort, Patrick; Nicol, P.
L’activité conchylicole sur les estuaires du Sud Est Cornouaille en Finistère est un enjeu majeur en raison de son importance socio-économique à l’échelle locale. Cette filière est soumise a de multiples contraintes et notamment au respect de la qualité sanitaire des produits finis,  à l’origine de potentielles Toxi-Infections Alimentaires (TIA) qui peuvent fragiliser sa pérennité. La qualité microbiologique des eaux littorales est donc un point essentiel à maîtriser pour limiter les risques sanitaires liés à la consommation de ces fruits de la mer. Pour ce faire, différents moyens ont été mis en place, qu’il s’agisse de la réglementation des zones conchylicoles à l’échelon national ou de l’élaboration d’actions de restauration de la qualité des eaux à...
Tipo: Text
Palavras-chave: Rivière de l’Aven; Rivière du Bélon; Rivière de Merrien; Contamination fécale; Escherichia coli; Plomb; Cadmium; Mercure; PCB; Dioxines; HAP; Ostréiculture.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00388/49955/50528.pdf

Etude d’outils d’évaluation de la contamination ChimiqUe dans les eaux de la ManchE - ECUME
Provedor de dados: 5
Autores: Menet-nedelec, Florence; Halm-lemeille, Marie-pierre; Maheux, Frank; Pierre-duplessix, Olivier; Simon, Benjamin; Gonzalez, Jean-louis; Repecaud, Michel; Facq, Jean-valery.
L’étude ECUME était une opération destinée à tester localement dans les eaux côtières du littoral normand, des outils développés nationalement lors de nombreux travaux, et pressentis pour être utilisés lors des prochaines campagnes d’évaluation de la qualité chimique des masses d’eau littorales pour la DCE.  Ceci afin de déterminer la méthode la plus adaptée et opérationnelle de les déployer, et comparer leurs résultats entre eux et par rapport aux connaissances actuelles des niveaux de contamination. Trois sites ont été choisis : Chausey, baie des Veys et estuaire de Seine. Les résultats des analyses chimiques dans l’eau de mer grâce aux DGT, POCIS, SBSE, et dans les moules ont permis de confirmer le contraste du niveau de contamination en éléments traces...
Tipo: Text
Palavras-chave: Contamination chimique; Chausey; Baie des Veys; Estuaire de Seine; DGT; POCIS; SBSE; Biomarqueurs; Stabilité lysosomale; Micronoyaux; Activité catalase; Métaux; Pesticides; Substances pharmaceutiques; HAP; PCB; Phtalates; Alkylphénols.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00434/54582/55966.pdf