Consulta: creatorFacets:"Laurier, Fabien"
Registros recuperados: 4
Data/hora: 09/06/2024 17:31:33

Cycle du mercure en estuaire, baie de Seine et pays de Caux
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laurier, Fabien.
The Seine estuary and its adjacent region Pays de Caux are two significant sources of mercury for coastal marine environments. It is carried through fluvial means for the Seine bay and through karstic fresh water emergences for Pays de Caux's coastal area.  Mercury cycle in the Seine estuary and bay is affected by additional anthropical activities. The estuary's maximal turbidity area acts like a trap and a chemical reactor for fluvial mercury. Within this area, we can confirm: (i) the non conservative behaviour of dissolved mercury; (ii) mercury enrichment of particles when comparing the Seine's and marine environment and we suggest mercury particle redistribution from the organic fraction to the oxyhydroxydes fraction. A large fraction of mercury is...
Tipo: Text
Palavras-chave: Bay of Seine; Pays de Caux; Estuary; Coastal zone; Speciation; Bioavailability; Mercury; Pays de Caux; Seine; Estuaire; Emergence; Zone côtière; Spéciation; Biodisponibilité; Mercure.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/these-1842.pdf

The impact of groundwater discharges on mercury partitioning, speciation and bioavailability to mussels in a coastal zone (Reprinted from Marine Chemistry, vol 104, pg 143-155, 2007)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laurier, Fabien; Cossa, Daniel; Beucher, Charlotte; Breviere, Emily.
The Mussel Watch program conducted along the French coasts for the last 20 years indicates that the highest mercury concentrations in the soft tissue of the blue mussel (Mytilus edulis) occur in animals from the eastern part of Seine Bay on the south coast of the English Channel, the "Pays de Caux". This region is characterized by the presence of intertidal and submarine groundwater discharges, and no particular mercury effluent has been reported in its vicinity. Two groundwater emergence systems in the karstic coastal zone of the Pays de Caux (Etretat and Yport with slow and fast water percolation pathways respectively) were seasonally sampled to study mercury distribution, partitioning and speciation in water. Samples were also collected in the...
Tipo: Text
Palavras-chave: Mussel; Estuaries; Groundwater seepage; Bioavailability; Speciation; Mercury.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-4704.pdf

Mercury transformations and exchanges in a high turbidity estuary: The role of organic matter and amorphous oxyhydroxides
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laurier, Fabien; Cossa, Daniel; Gonzalez, Jean-louis; Breviere, Emily; Sarazin, G.
The speciation and partition of mercury in a macrotidal estuary (Seine estuary, France) was studied in order to explore the role of the high turbidity zone (HTZ) in mercury transfer to the adjacent coastal waters. Water and particles were analyzed to determine the concentrations of various mercury species, including monomethylmercury and the inorganic fraction. The exchangeable particulate mercury, which varies with salinity, and the mercury fraction associated with the amorphous oxyhydroxides were evaluated. The distribution of dissolved mercury species during early mixing suggests non-conservative behavior of organically bound mercury at the head of the estuary. Mercury in the particles covaried positively with suspended particulate matter concentrations...
Tipo: Text
Palavras-chave: Sediments; Biogenic thiols; Fluorescence detection; Seine estuary; Mercury.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-425.pdf

The impact of groundwater discharges on mercury partitioning, speciation and bioavailability to mussels in a coastal zone
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laurier, Fabien; Cossa, Daniel; Beucher, Charlotte; Breviere, Emily.
The Mussel Watch program conducted along the French coasts for the last 20 years indicates that the highest mercury concentrations in the soft tissue of the blue mussel (Mytilus edulis) occur in animals from the eastern part of Seine Bay on the south coast of the English Channel, the "Pays de Caux". This region is characterized by the presence of intertidal and submarine groundwater discharges, and no particular mercury effluent has been reported in its vicinity. Two groundwater emergence systems in the karstic coastal zone of the Pays de Caux (Etretat and Yport with slow and fast water percolation pathways respectively) were seasonally sampled to study mercury distribution, partitioning and speciation in water. Samples were also collected in the...
Tipo: Text
Palavras-chave: Mussel; Estuaries; Groundwater seepage; Bioavailability; Speciation; Mercury.
Ano: 2007
URL: https://archimer.ifremer.fr/doc/2007/publication-3113.pdf