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	Provedor de dados ArchiMer (4) Autor Alzieu, Claude (1) Chiffoleau, Jean-francois (1) Le Dean, Loic (1) Marcaillou-le Baut, Claire (1) Michel, Pierre (1) Sanjuan, Jane (1) Thibaud, Yves (1) Mais... Palavra-chave Tin (4) Étain (3) Biogeochemistry (2) Biogéochimie (2) Absorption spectra (1) Antifouling substances (1) Arsenic (1) Cadmium (1) Composés organométalliques (1) Contamination (1) Copepod (1) Copépode (1) Ecotoxicology (1) Marine organisms (1) Mercure (1) Mercury (1) Organometallic compounds (1) Pollution detection (1) Spectroscopic techniques (1) Test (1) Mais... Tipo do documento Text (4) Ano 1992 (1) 1989 (1) 1988 (1) 1980 (1) País France (4) Idioma Francês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Analyse de l'Etain par Spectrophotometrie d'absortion atomique avec four ectrothermique. Application aux organismes marins ArchiMer Thibaud, Yves. The author presents an analysis technique permitting the determination of the tin in the tissues of marine organisms. This technique is only the application of the spectrophotometry of atomic absorption with atomization in the electrothermic oven. After the acid attack of the sample, the solution is put in a graphite oven to atomize the tin selectively and quantitatively. The detection limit obtained, 0,5 mu g/g of the lyophilized flesh is very satisfactory, to show the purport variations in shells from different origins. Tipo: Text Palavras-chave: Marine organisms; Tin; Antifouling substances; Absorption spectra; Spectroscopic techniques; Pollution detection. Ano: 1980 URL: http://archimer.ifremer.fr/doc/1980/publication-1906.pdf Importance de la spéciation des métaux et composés organométalliques pour une bonne évaluation des risques environnementaux en milieu marin. Cas du mercure, de I'arsenic et de l'étain ArchiMer Michel, Pierre. Methylmercury toxicity for sea-food consumers is well known long time ago. Tributyltin used as antifouling in paints is toxic at a level as low as 1 ng/l for oysters gastropod. At the opposite, organoarsenic compounds and especially arsenobetaine from fishes are much less toxic than inorganic species. Moreover, besides toxicological considerations, the biogeochemical fates of these elements need a good knowledge of the chemical forms of environmental inputs and of their behaviour in the various compartments (waters, sediments, biota). These phenomenons will be better understood by discussing typical applications. Tipo: Text Palavras-chave: Composés organométalliques; Mercure; Arsenic; Étain; Biogéochimie; Organometallic compounds; Mercury; Arsenic; Tin; Biogeochemistry. Ano: 1992 URL: https://archimer.ifremer.fr/doc/00480/59138/61766.pdf L'étain et les organoétains en milieu marin. Biogéochimie et écotoxicologie. ArchiMer Alzieu, Claude. This report synthesizes the knowledge on the biogeochemical cycle, bioconcentration processes and ecotoxicity of tin and organotins in the marine environment. Concentrations levels, biomethylation mechanisms and exchanges between sediments and water are assessed. Emphasis is given on tributyltin sublethal effects, toxicity mechanisms and no effect levels for the most sensitive organisms. Regulations on the use of organotins as antifoulants in paints are examined. Conclusions and recommendations for environmental management and research are given. Tipo: Text Palavras-chave: Étain; Biogéochimie; Contamination; Écotoxicologie.; Tin; Biogeochemistry; Contamination; Ecotoxicology. Ano: 1989 URL: http://archimer.ifremer.fr/doc/00332/44314/43883.pdf Mise au point d'un test microcrustacé marin ArchiMer Marcaillou-le Baut, Claire; Le Dean, Loic; Chiffoleau, Jean-francois; Sanjuan, Jane. Because of the low number of currently available toxicity tests for marine environment, the authors describe an experimental procedure using a marine copepod : Tigriopus brevicornis. This method can be used to quantify the 50 % inhibition of larval production or growth. The variability in controls larval production reaches about 9 %. The toxicity of two contaminants : tributyltin (TBTF) and cadmium chloride (CdCl2) was determined with this method and the 50 % decreases in larval production are respectively 1,4 µg/l (TBTF) and 61 µg/l (Cd++). Tipo: Text Palavras-chave: Test; Toxicité; Copépode; Étain; Cadmium; Test; Toxicity; Copepod; Tin; Cadmium. Ano: 1988 URL: http://archimer.ifremer.fr/doc/00139/25036/23145.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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