Data/hora: 07/06/2024 03:31:35

Provedor de dados: 	5	
País: 	France	
Título: 	Historique de la contamination des sédiments littoraux des Antilles françaises par la chlordécone (ChloSed)	
Autores: 	Robert, Serge.	
Data: 	2012-02	
Ano: 	2012	
Resumo: 	Kepone contamination of French West Indies marine environments is scarcely known. Contaminated soils particles are carried by rivers from terrestrial zones to the coastal marine sediments where they settle. Thus coastal sediments potential function as a sink for them, but also as a source of contamination for the marine biota. Therefore, they can be of major importance both in relation with the origin of the catchment area contamination and with the potential impact of this contamination on the benthic ecosystems. The objectives of this study are to characterize the marine deposits in order to define the spatial extent of the contamination and to determine the temporal stages of this contamination in the superficial sedimentary column (about one half-meter deep). Two neighbouring bays were chosen along the south-atlantic coasts of the Martinique Island, the Robert Bay, where different previous studies have been already performed, and the Galion Bay, which also present important environmental concerns. The results (i) confirm the general low rate of kepone contamination in the Robert Bay superficial sediments, while the influence of the river is more pronounced in the Galion Bay for which sediment samples from the proximity of the river outfall are more contaminated, (ii) relativize the role of organic matter associated to the finer particle in the little contaminated marine sediments (iii) and at last, differentiate strongly the contamination of the two bays due to specific characteristic parameters. So, it apparears that the sedimentary dynamics and mineralogical cohorts undoubtedly should explain the discrepancies in the contamination of the sediments between the two bays, also characterized by very different humus-clayed compounds in the soils of each catchment basin.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/00071/18247/15810.pdf	
Relação: 	http://archimer.ifremer.fr/doc/00071/18247/	
Formato: 	application/pdf	
Fonte: 	2012 Ifremer