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| Registros recuperados: 79 | |
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| Abdou, M.; Schaefer, J.; Cobelo-garcia, A.; Neira, P.; Petit, J. C. J.; Auger, Dominique; Chiffoleau, Jean-francois; Blanc, Gerard. |
| Platinum Group Metals (PGM) are modern, technologically relevant elements for which (i) the anthropogenic cycle has outcompeted the natural cycles and (ii) environmental behavior, fate and impact are still widely unknown. Stripping voltammetry was used for accurate determinations of platinum (Pt) in historical records of river sediments and estuarine oysters from the Gironde fluvial-estuarine continuum (SW France) comprising the Lot River. Sediment cores from the Lot River, dated from 1952 to 2001, showed past Pt contamination due to former industrial (smelter) activities in the Lot River watershed. These samples revealed the phasing-out of a historical Pt contamination with Pt/Th (Thorium) values of 11 × 10− 5 ± 0.79 × 10− 5 for the deepest part of the... |
| Tipo: Text |
Palavras-chave: Platinum; Sediments; Wild oysters; Bioaccumulation. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00311/42177/41478.pdf |
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| Arakaki,Andréa Haruko; Souza Vandenberghe,Luciana Porto de; Soccol,Vanete Thomaz; Masaki,Ryu; Rosa Filho,Ernani Francisco da; Gregório,Alexsandro; Soccol,Carlos Ricardo. |
| The objective of this work was to study the production of biomass with copper bioaccumulation in submerged fermentation using sugarcane molasses. Candida pelliculosa BARU 05 isolated from Baru (Dipteryx alata) was selected for its good capacity to accumulate the copper. Fermentation was carried out using the medium composed by sugarcane molasses at 5 °Brix enriched with (g/L) CuSO4.5H2O 0.1; yeast extract, 10.0; (NH4)2SO4, 5.0 ; KH2PO4, 5.0 MgSO4, 0.5, inoculum 10 % of total volume (100 ml), pH 6.0, and incubation at 30 °C, 120 rpm for 120 h. After three steps of optimization an uptake of 95.04% and 13.397 g/L biomass were obtained. The kinetics of copper bioaccumulation and biomass production was followed in a 10- liter bioreactor in a batch and fed-batch... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioaccumulation; Baru; Yeast; Copper; Sugarcane molasses. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500021 |
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| Bado Nilles, Anne. |
| The effects of PAHs, considered among the most toxic by the United States Environmental Protection Agency, were tested in vitro and in vivo on two commercial species of the Pertuis-Charentais (Charente-Maritime, France): sea bass, Dicentrarchus labrax, and the Pacific oyster, Crassostrea gigas. This study was carried out as part of the European project EROCIPS with the aim of finding new immunological biomarkers caused by occasional pollution by hydrocarbons. During in vitro experimentation, pollutants and immunological biomarkers were choosen. Thereafter, the in vitro exposures to the soluble fraction of Erika's heavy fuel oil and its fluxant, light cycle oil, began. These exposures enable the validation of the experimental system used, with, in... |
| Tipo: Text |
Palavras-chave: Biliary metabolites; Bioaccumulation; Toxicity; Immune défense; European sea bass; Pacific oyster; Métabolites biliaires; Bioaccumulation; Toxicité; Capacités de défense; Hydrocarbure; Bar commun; Huître creuse. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/these-7401.pdf |
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| Berland, Brigitte; Lassus, Patrick. |
| Tandis que certa ines efflorescences micro-algales provoquent de sérieuses nuisances par leur développement exubérant, d'autres sont nocives en raison des toxines qu'elles produisent. Ces proliférations, dangereuses pour les organismes marins, mais aussi pour les consommateurs de fruits de mer, sont étudiées en France depuis 1983. Dès 1989, devant l'ampleur des phénomènes observés au niveau national et européen, un programme scientifique réunissant de nombreux in stituts et laboratoires, le PNEAT, a été créé afin de fédérer les moyens mis en oeuvre dans des disci plines aussi diverses que l'écologie, la biologie cellulaire, l'écophysiologie, la toxicologie et la chimie. Les résultats obtenus au cours de la période 1989-1995 sont présentés à la fois pour... |
| Tipo: Text |
Palavras-chave: Efflorescences; Cycle biologique; Allélopathie; Taxonomie; Ecophysiologie; Broutage; Phycotoxines; Toxicologie; Chimie extractive; Toxinogenèse; Bioaccumulation. |
| Ano: 1997 |
URL: https://archimer.ifremer.fr/doc/00450/56179/57726.pdf |
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| Blust, R.; Decleir, W.. |
| A flow-through test system for the study of toxicity and bioaccumulation processes is described. The apparatus can operate within a very wide range of flow rates. Flow deviations are less than 2% and the variation in test-agent concentration, (determined for copper) ranges from 3 to 8%. As a practical test a copper-toxicity experiment on adult <i>Artemia</i> was carried out and the results compared with data obtained from a similar but static assay. The results indicate that: - bioassay and accumulation experiments must preferably be carried out under flow-through conditions to keep the concentration and bioavailability of the toxicant as constant as possible;- the data analysis must be based upon measured test-solution toxicant-concentrations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioaccumulation; Marine invertebrates; Toxicity tests. |
| Ano: 1984 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3261 |
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| Bocquene, Gilles; Abarnou, Alain. |
| This study aimed to compare the contamination levels of various organohalogenated compounds in two migratory fish species in the Vilaine River in western France. Organochlorinated pesticides, polychlorinated biphenyls (PCBs), dioxins (polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/Fs)), and polybrominated diphenyl ethers (PBDEs) were analyzed in two diadromous species from the Vilaine estuary, the grey mullet (Liza ramada)-an amphihaline species, and the allis shad (Alosa alosa)-an anadromous species. Fish were collected in spring 2004 and spring 2005, upstream and downstream of the Arzal Dam. PCB contamination varied from 27 to 200 ng g(-1) dry weight (d.w.). PCDDs/Fs, expressed in toxicity equivalent quantity (TEQ) varied from 0.4 to 2.8 pg g(-1)... |
| Tipo: Text |
Palavras-chave: Vilaine estuary; Organohalogenated contaminants; PCBs; DDT; Dioxins; Shad; Grey mullet; Bioaccumulation. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00124/23572/21468.pdf |
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| Bodin, Nathalie. |
| Marine decapod crustaceans are macrobenthic opportunist species, of great commercial interest, and can accumulate pollutants. Worrying about consumers' safety, polychlorobiphenyls (PCBs), polybromodiphenyl Ethers (PBDEs) and dioxins (PCDD/Fs) were analyzed in four crustacean species from the coastal waters of Brittany and Normandy. As regards to regulations, the consumption of crustacean muscle doesn't raise any health problems. The second objective of this study was to evaluate the biological processes influencing PCB bioaccumulation in the spider crab Maja brachydactyla. From a quantitative point of view, organotropism, diet and age were the major factors acting on contamination. From a qualitative point of view, PCB fingerprints depended on sex, and to... |
| Tipo: Text |
Palavras-chave: Food safety; Biotransformation; Biomagnification; Food webs; Stable isotopes; Decapod crustaceans; Bioaccumulation; Polychlorinated biphenyls; Organic contaminants; Sécurité sanitaire; Biotransformation; Bioamplification; Réseaux trophiques; Isotopes stables; Crustacés décapodes; Bioaccumulation; Contaminants organiques. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/these-1149.pdf |
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| Bouchoucha, Marc; Chekri, R.; Leufroy, A.; Jitaru, P.; Millour, S.; Marchond, N.; Chafey, C.; Testu, C.; Zinck, J.; Cresson, Pierre; Mirallès, F.; Mahe, A.; Arnich, N.; Sanaa, M.; Bemrah, N.; Guérin, T. |
| From 1966 to 2015, the Gardanne alumina refinery discharged some 20 million tons of bauxite residue (called red mud) into the Cassidaigne Canyon (northwest French Mediterranean) with impacts on local ecosystem functioning. Although these red muds contained high levels of trace elements (TE), in particular titanium (Ti), vanadium (V), aluminum (Al) and arsenic (As), surprisingly, their impacts on fish contamination levels and the risk related to fish consumption have been little studied until now. Here, 11 trace elements (Al, As, Cd, Cr, Co, Cr, Mn, Ni, Pb, Ti and V) were analyzed in muscle and, when possible, liver, from 1308 fish of 26 species from an impacted zone in the vicinity of the Cassidaigne Canyon and a reference zone, unaffected by red mud... |
| Tipo: Text |
Palavras-chave: Trace element; Bioaccumulation; Arsenic speciation; ICP-MS; Fish; Industrial discharge. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00505/61618/65529.pdf |
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| Bourgeault, Adeline; Gourlay-france, Catherine; Priadi, Cindy; Ayrault, Sophie; Tusseau-vuillemin, Marie-helene. |
| This study investigates the ability of the biodynamic model to predict the trophic bioaccumulation of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in a freshwater bivalve. Zebra mussels were transplanted to three sites along the Seine River (France) and collected monthly for 11 months. Measurements of the metal body burdens in mussels were compared with the predictions from the biodynamic model. The exchangeable fraction of metal particles did not account for the bioavailability of particulate metals, since it did not capture the differences between sites. The assimilation efficiency (AE) parameter is necessary to take into account biotic factors influencing particulate metal bioavailability. The biodynamic model, applied with AEs... |
| Tipo: Text |
Palavras-chave: Bioaccumulation; Active biomonitoring; Bioavailability of particulate metals; Assimilation efficiency; Chemical sequential extraction. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00051/16218/14040.pdf |
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| Bustamante, Paco; Lahaye, V; Durnez, C; Churlaud, C; Caurant, Florence. |
| Total (T-Hg) and organic (O-Hg) mercury concentrations and tissue distribution were examined in 20 species of cephalopods (n = 278) from the north eastern Atlantic waters, i.e. from the Bay of Biscay to the Faroe Islands. Concentrations of T-Hg in whole cephalopods showed elevated variations among species, i.e. from 40 to 3560ng g(-1) dwt, but a low variability within each species (mean CV%=39%). With the exception of oceanic squids, the digestive gland globally displayed higher T-Hg concentrations than the remaining tissues. In contrast, O-Hg concentrations determined in selected species were generally higher in the remaining tissues. Despite higher T-Hg concentrations, the digestive gland weakly contributed to the total body burden of both T-Hg and O-Hg... |
| Tipo: Text |
Palavras-chave: Cuttlefish; Octopus; Squid; Body distribution; Speciation; Bioaccumulation. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1873.pdf |
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| Bustamante, Paco; Teyssie, J; Fowler, S; Warnau, M. |
| Radionuclide experiments were performed to study the accumulation, retention and transport of Am-241 and Cs-134 in egos of the common cuttlefish Sepia officinalis. Experiments were designed to determine the processes controlling uptake of both radionuclides following, exposure via seawater. The bioaccumulation of both radionuclides displayed saturation kinetics with steady state in uptake being reached in 10 d for Am-241 and 6 d for (CS)-C-134. Am-241 was readily taken up by the eggs which reached a concentration factor (CF) of 20 after 10 d of exposure. During embryonic development. the eggshell acted as an effective shield against Am-241 penetration with 98% of the radionuclide associated with this membrane. In contrast. (CS)-C-134 was transported across... |
| Tipo: Text |
Palavras-chave: Cephalopods; Bioaccumulation; Biokinetics; Radionuclides. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1871.pdf |
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| Campolim,Marcos Bührer; Henriques,Marcelo Barbosa; Petesse,Maria Letizia; Rezende,Karina Fernandes Oliveira; Barbieri,Edison. |
| Abstract: The objective of this work was to verify the existence of bioaccumulation in mussels of the species Perna perna, by determining the concentration of metal trace elements, in Urubuqueçaba Island, Santos Bay, Santos, SP, Brazil. Mussels were collected in natural banks and rocky shores, and sampling took place from April 2010 to June 2011. The concentration of the trace metal elements - aluminum, cadmium, cromium, copper, iron, manganese, nickel, lead, and zinc - was determined according to mussel sex, length, and seasonality classes, in a flame atomic absorption spectrometer. Statistical analyses were applied to the results with the use of the software PAST, with parametric and nonparametric approaches, at 5% probability. In the summer, mussels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Perna perna; Bivalve mollusks; Bioaccumulation; Seasonality. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201131 |
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| Casas, Stellio. |
| Monitoring coastal contamination of trace metals using bivalve molluscs as quantitative bioindicators is widely used in many international monitoring programs. The bioaccumulation of metal within an organism results from the interaction between physiological (growth, loss of weight, absorption, accumulation), chemical (metal concentration, speciation, bioavailability) and environmental factors (temperature, SPM, chlorophyll). By utilizing the parameters above in this study, it appears that modeling metal dynamics in marine mussels is a reliable tool. The model allows understanding the bioaccumulation process which results from the interactions between biological, chemical and environmental factors. One of the objective of this study was to couple a... |
| Tipo: Text |
Palavras-chave: Biomonitoring; Dynamic Energy Budget; Model; Trace metals; Bioaccumulation; Mytilus galloprovincialis; Mussel; Bioindicator; Surveillance; Budget énergétique dynamique; Modèle; Métaux traces; Bioaccumulation; Mytilus galloprovincialis; Moule; Bioindicateur. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/these-356.pdf |
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| Registros recuperados: 79 | |
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