Chemical speciation of some particulate elements in the English Channel, and impact of human activities on the magnetic behaviour of suspended matter

Wartel, M.; Cordier, Carole; Douez, C; Deram, L.; Martin, Emmanuel L.O.; Ouddane, Baghdad; Chamley, Hervé; Récourt, Philippe

doi:10.1016/0025-326x(94)90074-4

Cited by 12 publications

(8 citation statements)

References 43 publications

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“…They concluded that the adsorption on and substitution in calcite are the major mechanisms controlling the dissolved concentration of Mn in seawater along the French coast of the English Channel. Recent studies on suspended particulate matter from the Seine Estuary have also indicated that the majority of particulate Mn is bound to carbonate (Bougheriet et al, 1992(Bougheriet et al, , 1994. A good correlation between concentrations of Mn and carbonate in marine sediments has been reported off the southwestern coast of Taiwan (Fang and Hong, 1999).…”

Section: Spatial Distributionmentioning

confidence: 92%

Distribution and contamination of trace metals in surface sediments of the East China Sea

Fang

Feng

et al. 2009

Marine Environmental Research

129

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Section: Spatial Distributionmentioning

confidence: 92%

Distribution and contamination of trace metals in surface sediments of the East China Sea

Fang

Feng

et al. 2009

Marine Environmental Research

129

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“…2 that most Mn is divided into the first fraction (62.4-67.8%), indicating relatively higher mobility and bioavailability. Other studies also reported that Mn was mainly in carbonates (Wartel et al 1991;Bougheriet et al 1994). Mn is abundant in the Earth's crust; the radius of Mn 2+ (0.91) is similar to that of Ca 2+ (1.08) and Mg 2+ (0.8), so the replacement of Ca 2+ and Mg 2+ by Mn is easier (Liu et al 2005).…”

Section: Metal Speciationmentioning

confidence: 93%

Speciation and ecological risk of heavy metals in intertidal sediments of Quanzhou Bay, China

Wang

2009

Environ Monit Assess

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The chemical speciation of nine heavy metals in intertidal sediments from Quanzhou Bay was determined using a modified sequential extraction procedure, proposed by the Commission of the European Community Bureau of Reference. The results show that Mn presents the highest percentage in the acid-soluble fraction, and Pb and Cu present the highest percentages in the reducible fraction. The highest percentages of Fe, V, Cr, Ni, Zn, and Co were found in the residual fraction. The mobility order of the heavy metals studied on the basis of the nonresidual content of the elements is Mn > Pb > Cu > Co > Zn > Ni > Cr > V > Fe. The assessment on potential ecological risk indices of some heavy metals indicates that Zn, Ni, and Cr show moderate contamination, while Cu and Pb show slighter contamination. On the whole, the comprehensive potential ecological risk index of Cu, Zn, Ni, Cr, and Pb in the sediments presents moderate degree.

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“…Metal contents of TSS were determined by AAS after a "total" digestion, involving HNO 3 + HClO 4 + HF acid mixture (Landing and Lewis 1991;Boughriet et al 1994).…”

Section: Methodsmentioning

confidence: 99%

Heavy metal concentrations in water, suspended matter, and sediment from Gökova Bay, Turkey

Balkıs

Aksu

Okuş

et al. 2009

Environ Monit Assess

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The contents of heavy metals (Fe, Mn, Pb, Cu, Cd, and Hg) dissolved in water and suspended solids of Gökova Bay--partly and fully sampled in 2005 and 2006, respectively--are quite higher than the average values encountered in uncontaminated sea water. The high concentrations are associated with terrestrial inputs from the mining zones and anthropogenic (domestic+industrial) sources. Moreover, the distribution of Fe and Cu is affected by primary production because these elements function as nutrients in biological activities. The Cr, Ni, and Fe concentrations of surface sediments are above the shale average. The Cr and Ni contents of surface sediments representative of river mouths strongly correlate with total phosphorus contents. In a sulfide-poor environment, Pb and Cu were concentrated at a higher ratio in surface sediments than Cd, probably due to higher stabilities of their surface complexes with amorphous iron oxides and clay minerals existing as major components in the sediments. The exceptional enrichment of Zn may be attributed to double oxide formation with amorphous iron oxides in sediments. The high metal values are most probably caused by terrestrial inputs from anthropogenic sources and the mining zones at the southeast part of the bay. The Al, Mn, Pb, Cu, Zn, and Hg contents are below the shale average. The low values have possibly originated from the coarse-grained sandy sediments having a low affinity for metals. There are no distinct differences in the metal distributions in water and suspended matter between the years 2005 and 2006 in the bay, probably due to low sedimentation rates.

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Chemical speciation of some particulate elements in the English Channel, and impact of human activities on the magnetic behaviour of suspended matter

Cited by 12 publications

References 43 publications

Distribution and contamination of trace metals in surface sediments of the East China Sea

Distribution and contamination of trace metals in surface sediments of the East China Sea

Speciation and ecological risk of heavy metals in intertidal sediments of Quanzhou Bay, China

Heavy metal concentrations in water, suspended matter, and sediment from Gökova Bay, Turkey

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