An Integrated Approach to Analyse the North Sea Ecosystem Behaviour in Relation to Waste Disposal

Klomp, R.; Pagee, J.A. van; Glas, P. C. G.

doi:10.1007/978-94-009-4628-6_11

Cited by 6 publications

(3 citation statements)

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“…The trace metal studies in anoxic water revealed that the reduced species of Mn, Fe and Co are more soluble than the oxidised one. A similar association of Co with the Mn cycle has been reported in many earlier works in anoxic waters (Haraldsson & Westerlund 1988;Dyressen & Kremling 1990;Lewis & Landing 1991).…”

Section: Trace Metalssupporting

confidence: 69%

“…In the case of nearshore sediments due to the constant turbulent nature of water by wave action, nearshore environment become more oxic which in turn increases the deposition of precipitate with adsorption of different elements in the sediments. The coastal enrichment of these elements is consistant with previous studies in other areas of the world ocean (Klomp et al 1986;Sanudo-Wilhelmy & Flegal 1996). Those elevated coastal concentrations have been attributed to benthic remobilisation, including particle resuspension and diffusive fluxes, upwelling and continental weathering (Martin & Gordon 1988;Westerlund & Ohman 1991).…”

Section: Trace Metalsmentioning

confidence: 76%

“…Since Fe was the most abundant element in the study region, its linear correlation with other elements varied in the order Mn > Zn> Ni> Cu> Cr> Co > Cd > Pb ( Figure 6). It is evident that the high significant correlation between Fe and Mn is due to their characteristics as scavenging elements (Lewis & Landing 1991). The geochemistry of sediments shows that Fe and Mn form the principle lattice for adsorption of other elements due to their scavenging property, which leads accumulation by co-precipitation.…”

Section: General Features and Correlationsmentioning

confidence: 99%

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Geochemical index of trace metals in the surficial sediments from the western continental shelf of India, Arabian Sea

Laluraj

Nair

2006

Environ Geochem Health

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The present study focuses on the determination and abundance of trace metals (viz. Cu, Ni, Zn, Cr, Co, Cd, Mn and Fe) in the surficial sediments of west coast of Arabian Sea along the Indian subcontinent. Sediment samples were collected from three transects along the western continental shelf of Arabian Sea. The enrichment of Fe and Mn in coastal oxic-sediments indicates the precipitation of these redox sensitive elements as Fe- and Mn-hydroxides and oxides, whereas the low Fe and Mn concentrations in the oxygen deficient sediments of deeper stations reflects the dissolution of their hydroxides and oxides. Concentrations of fairly redox insensitive trace metals like Cu, Ni, Zn, Cr and Cd (with the exceptions of Cr) showed higher values at nearshore sediments, then it decreased towards seaward and again showed a slight increase at oxygen minimum stations in all the three transects. This geochemical variability in their distributional characteristics is mainly associated with the extent to which the precipitation or dissolution of Fe- and Mn-oxides/hydroxides occur since the scavenging or releasing effects of Fe- and Mn-oxides/hydroxides act as significant 'sinks' or 'sources' of heavy metals. The change in wind pattern, coastal upwelling and increased productivity are also the reported factors which influence the biogeochemical cycling of trace metals in the surface sediments of west coast of India. Enrichment factor generally showed a high gradient accumulation from nearshore to shelf.

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Section: Trace Metalssupporting

confidence: 69%