Trace metal distribution, partition and fluxes in the Seine estuary (France) in low discharge regime
Identifieur interne : 001439 ( France/Analysis ); précédent : 001438; suivant : 001440Trace metal distribution, partition and fluxes in the Seine estuary (France) in low discharge regime
Auteurs : Jean-François Chiffoleau [France] ; Daniel Cossa [France] ; Dominique Auger [France] ; Isabelle Truquet [France]Source :
- Marine Chemistry [ 0304-4203 ] ; 1994.
Abstract
Samples collected in surface waters of the Seine estuary (France) during a low discharge period were analyzed for dissolved and particulate trace metals (Cd, Co, Cu, Mn, Ni, Pb and Zn). The studies showed that these trace elements are reactive in the estuary: an addition to the dissolved phase is observed for Cd, Co, Cu, Mn, Ni and Zn and a removal for Pb. Cd, Cu, Ni and Zn are released from seaward fluxing riverine particles or estuarine sediments directly in the water column, while the dissolved Co-salinity distribution, similar to Mn distribution suggests a preliminary release in the sediment pore water. Rapid adsorption onto the suspended load plays a major role in Pb removal from the dissolved phase. Partition coefficients for the dissolved and particulate phase (KD) decrease in the order: Pb > Co > Cu, Zn > Ni > Cd, i.e. a sequence similar to those reported from others European areas. Gross riverine inputs to the estuary and net efflux of dissolved trace metals to the English Channel are estimated. Values show that the Seine river and its estuary constitute a significant source of trace metals for the North Sea.
Url:
DOI: 10.1016/0304-4203(94)90105-8
Affiliations:
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ISTEX:0C70C75B1C2135B7CE937B814A003DB898824107Le document en format XML
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The studies showed that these trace elements are reactive in the estuary: an addition to the dissolved phase is observed for Cd, Co, Cu, Mn, Ni and Zn and a removal for Pb. Cd, Cu, Ni and Zn are released from seaward fluxing riverine particles or estuarine sediments directly in the water column, while the dissolved Co-salinity distribution, similar to Mn distribution suggests a preliminary release in the sediment pore water. Rapid adsorption onto the suspended load plays a major role in Pb removal from the dissolved phase. Partition coefficients for the dissolved and particulate phase (KD) decrease in the order: Pb > Co > Cu, Zn > Ni > Cd, i.e. a sequence similar to those reported from others European areas. Gross riverine inputs to the estuary and net efflux of dissolved trace metals to the English Channel are estimated. Values show that the Seine river and its estuary constitute a significant source of trace metals for the North Sea.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Pays de la Loire</li></region><settlement><li>Nantes</li></settlement></list><tree><country name="France"><region name="Pays de la Loire"><name sortKey="Chiffoleau, Jean Francois" sort="Chiffoleau, Jean Francois" uniqKey="Chiffoleau J" first="Jean-François" last="Chiffoleau">Jean-François Chiffoleau</name></region><name sortKey="Auger, Dominique" sort="Auger, Dominique" uniqKey="Auger D" first="Dominique" last="Auger">Dominique Auger</name><name sortKey="Cossa, Daniel" sort="Cossa, Daniel" uniqKey="Cossa D" first="Daniel" last="Cossa">Daniel Cossa</name><name sortKey="Truquet, Isabelle" sort="Truquet, Isabelle" uniqKey="Truquet I" first="Isabelle" last="Truquet">Isabelle Truquet</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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