A critical review of Cadmium in the Marine environment

Simpson, Will

doi:10.1016/0079-6611(81)90007-0

Cited by 67 publications

(45 citation statements)

References 157 publications

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“…Cadmium in the form of Cd2+ reaching intertidal waters will be chelated by organic ligands in water or form mixed aqua complexes with available anions such as chloride and carbonate ions (Mantoura et al 1978). Inorganic Mn and Fe oxides and hydroxides in sediments bind Cd (Cd is used here to specify the sum of all species of Cd2+ present) at high pH and oxidising conditions and release it again at low pH and reducing conditions (Forstner & Wittmann 1979, Simpson 1981. Under reducing conditions, Mn and Fe are reduced to free ions which then bind to sulphide minerals (FeS and MnS).…”

Section: Introductionmentioning

confidence: 99%

Effects of bioturbation by the lugworm Arenicola marina on cadmium uptake and distribution in sandy sediments

Rasmussen¹,

Banta²,

Andersen³

1998

Mar. Ecol. Prog. Ser.

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The effect of bloturbation by the lugworni Arenicola marina on uptake and distribution of cadnxum in sediment was assessed using laboratory sediment cores. Carner-free ""d was added to the water phase each day. Bioturbation (irrigation) was measured using bromide (Br-) as a tracer for water movement. In cores without lugworms all Cd was found in the surface sediment where it continued to build up over 16 d of exposure. In cores containing lugworms a distinct peak of Cd was found both at the sediment surface and, after a few days, at the feeding pocket of the worm (10 to 15 cm depth). During the 16 d of exposure this subsurface: peak broadened and eventually Cd was found in all depths from top to feeding depth of the indiv~dual worm. Compared to sediment cores without worms, the presence of lugxeorms more than doubled the rate of removal of Cd from water to sediment. Thls was attributed to an ~ncreased turnover of sediment (due to feeding activity), an increased sediment surface area (due to fecal casts, head shaft, tube and irrigation of the whole burrow) and an increased contact of Cd-labelled water with potential binding sites in the sediment due to irrigation Exposure to 1 ppm Cd reduced the fract~onal ratcl at which lugworms removed Cd from the water (as 'F" of Cd in the water). The total Cd flux to the sediment, however, was much greater due to the h g h e r Cd concentrations in the water Water fluxes estimated using Br-as a solute tracer revealed a 10-to 20-fold increase in water exchange of the sediments when lugworms were present. This enhanced water flux was not affected by exposure of lugworms to 1 ppm Cd. The results indicate that the presence of bioturbating infauna influences both the uptake rates of trace metals in near-shore sediments and the distribution of those metals.

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Section: Introductionmentioning

confidence: 99%

Effects of bioturbation by the lugworm Arenicola marina on cadmium uptake and distribution in sandy sediments

Rasmussen¹,

Banta²,

Andersen³

1998

Mar. Ecol. Prog. Ser.

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“…On note que le cadmium est éliminé au bout d'un temps de résidence de l'ordre de 1.75 ×10 5 ans [25].…”

Section: La Température (T)unclassified

Contribution of anthropic activities to the seawater pollution at the Port of Tenes

Guetarni

Douani

Moustefai

2017

J. Fundam and Appl Sci.

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The port of Ténès, located at West of Algiers, is a medium of intense anthropic activities. Its pollution was monitored using a sampling technique. The analysis of the parameters: pH, temperature, electrical conductiv concentration of heavy metals has been carried out by the atomic absorption while scanning the wavelengths varying from 217.0 nm at 228.8 nm. The evolution of the nitrate and nitrite content was obtained by spectrophotometer. Their spatio the Geographic Information System (GIS) software. The high toxicity of seawater is due to the presence of lead and cadmium with concentrations exceeding 60 times the normal value (0.015 mg/l). Moreover, the deficit in D.O aggression is related to the industrial discharges in the port area.

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“…In contrast, Cd is enriched in the surface waters of areas of upwelling, and this also leads to elevated levels in plankton unconnected with human activity Broenkow 1975, Boyle et al 1976). Oceanic sediments underlying these areas of high productivity can contain markedly elevated Cd levels as a result of inputs associated with biological debris (Simpson 1981). Ice and snow deposits from the polar regions represent a unique historical record of pollutants in atmospheric precipitation.…”

Section: Distribution In the Environment In Foods And In Living Orgmentioning

confidence: 99%

Cadmium

Herber¹

2004

Elements and Their Compounds in the Environment

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A critical review of Cadmium in the Marine environment

Cited by 67 publications

References 157 publications

Effects of bioturbation by the lugworm Arenicola marina on cadmium uptake and distribution in sandy sediments

Effects of bioturbation by the lugworm Arenicola marina on cadmium uptake and distribution in sandy sediments

Contribution of anthropic activities to the seawater pollution at the Port of Tenes

Cadmium

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