Journal ArticleDOI
Geochemical survey and metal bioaccumulation of three bivalve species (Crassostrea gigas, Cerastoderma edule and Ruditapes philippinarum) in the Nord Medoc salt marshes (Gironde estuary, France)
TLDR
Results suggest trace metal recycling due to reductive dissolution under suboxic conditions at the sediment surface resulting in trace metal release to the water column and adsorption onto suspended particles.About:
This article is published in Science of The Total Environment.The article was published on 2005-01-20. It has received 138 citations till now. The article focuses on the topics: Bioaccumulation & Cerastoderma edule.read more
Citations
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Ammonia in estuaries and effects on fish
TL;DR: Evaluation of ammonia as a pollutant will involve field and laboratory experiments to determine the responses of fish to ammonia as salinity and temperature vary over a period of time, and it will also be necessary to evaluate the response of a variety of species including estuarine residents and migrants.
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Assessing the current state of the Gironde Estuary by mapping priority contaminant distribution and risk potential in surface sediment
TL;DR: In this article, the first spatial distribution maps for the eight trace elements identified as priority contaminants in aquatic systems (i.e., Cd, Cr, Cu, Hg, Ni, Pb and Zn) in surface sediments of the Gironde Estuary (SW France) are presented.
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Geochemical signals and source contributions to heavy metal (Cd, Zn, Pb, Cu) fluxes into the Gironde Estuary via its major tributaries.
TL;DR: The results suggest that intensive agriculture also considerably influences gross metal fluxes into the Gironde Estuary, and monitoring fluxes and identifying distinct geochemical signals from source areas in heterogeneous watersheds may greatly improve understanding of contaminant transport to the coast.
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Scenario of particulate trace metal and metalloid transport during a major flood event inferred from transient geochemical signals
TL;DR: In this paper, high-resolution sampling was performed during a major flood event in a heterogeneous, medium scale watershed of the Garonne-Gironde fluvial-estuarine system (the Lot River).
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Trace element concentrations (mercury, cadmium, copper, zinc, lead, aluminium, nickel, arsenic, and selenium) in some aquatic birds of the southwest Atlantic coast of France.
TL;DR: Female birds displayed higher concentrations in liver and feathers than did male birds, and Cd accumulation increased with age, whereas Pb levels in feathers were lower in adult birds in connection with moulting, as was influenced by sex.
References
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Determination of mercury in seawater at sub-nanogram per liter levels
N. S. Bloom,Eric A. Crecelius +1 more
TL;DR: Using a refined two-stage gold amalgamation preconcentration technique in conjunction with cold vapor atomic absorption (CVAA) detection, mercury in various Pacific Northwest coastal waters has been determined through the use of extremely clean reagents and special handling techniques, the blank has been reduced and reproducibility greatly improved for both reducible mercury and total mercury as discussed by the authors.
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Separation of eight transition elements from alkali and alkaline earth elements in estuarine and seawater with chelating resin and their determination by graphite furnace atomic absorption spectrometry
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Geochemistry of trace metals in the Gironde estuary
TL;DR: In this paper, the authors measured the dissolved, particulate, and (by cross-flow filtration) colloidal fractions of Cd, Ni, Zn, Cu, Pb, Mn, and Fe in the Gironde, an estuary in southwestern France.
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Trace metal determinations in estuarine waters by electrothermal atomic absorption spectrometry after extraction of dithiocarbamate complexes into freon
TL;DR: In this article, the dithiocarbamate complexes of the metals are extracted into Freon-TF and back-extracted into dilute nitric acid solution, which gives complete separation from the matrix irrespective of salinity.
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Food sources of the infaunal suspension-feeding bivalve Cerastoderma edule in a muddy sandflat of Marennes-Oléron Bay, as determined by analyses of carbon and nitrogen stable isotopes
TL;DR: It is suggested that there are 2 major sources of organic matter assimilated by cockles of the studied flats: microphytobenthos and POM, and the relative importance of the 2 major food sources depends on the age of the cockles and the season.