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| Mamindy-pajany, Y.; Galgani, Francois; Romeo, M.; Hurel, C.; Marmier, N.. |
| The management of dredged sediments is a priority issue in the Mediterranean sea where sediments are historically polluted. The aims of this study were to evaluate the toxicity of port sediment samples and the effect of three mineral additives (hematite, zerovalent iron (ZVI) and natural zeolite (NZ)) on sediment elutriate toxicity. Four sediments (A, B, C and D) were provided by port authorities after composting procedure; particle size, particulate organic carbon, metals and organic pollutants (TBT, PAHs, PCBs) were determined in whole sediments. Elutriates from these composted sediments were analyzed by determining toxicity level using oyster (Crassostrea gigas) larvae bioassay, metal and dissolved organic carbon concentrations. Toxicity, measured on... |
| Tipo: Text |
Palavras-chave: Dredged sediments; Crassostrea gigas larvae; Toxicity; Mineral additive; Sediment management. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00016/12689/9695.pdf |
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| Geffard, A; Geffard, O; Amiard, J; His, Edouard; Amiard Triquet, C. |
| The bioavailability of Cd, Cu, Zn, and Pb from two metal-contaminated sediments (Bidassoa and Dunkerque) was studied using Crassostrea gigas larvae exposed to sediment elutriates. The metal contents within the sediments, the larvae and larval growth, the condition index, and the induction of metallothionein in the larvae were measured. The larval growth and condition index were only affected after exposure to the highest elutriates concentration (5 to 25%) from the most contaminated sediment (Dunkerque). Bioaccumulation of all metals was observed in larvae exposed to Dunkerque elutriatre; only Cu bioaccumulation was observed in the Bidassoa elutriate. The results from larvae exposed to both sediment elutriates show a strong correlation between... |
| Tipo: Text |
Palavras-chave: Metallothionein; Metal bioaccumulation; Larval growth; Crassostrea gigas larvae; Sediment elutriates. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-4748.pdf |
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