The changing state of contamination in the Lagoon of Venice. Part 2: Heavy metals

Bernardello, Marco; Secco, Tommaso; Pellizzato, Francesca; Chinellato, Michele; Sfriso, Adriano; Pavoni, Bruno

doi:10.1016/j.chemosphere.2005.12.033

Cited by 54 publications

(45 citation statements)

References 21 publications

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“…However, clam-fishing and clam-farming in that area are forbidden (Orel et al, 2000), because water and sediments are highly contaminated (Marcomini et al, 1997;Bellucci et al, 2000Bellucci et al, , 2002. Nevertheless, recent studies (Secco et al, 2005;Sfriso et al, 2005c;Bernardello et al, 2006) have provided evidence that the nutrients and contaminants recorded in that area have recently decreased significantly. As a result, at the end of the experimental period the biggest clams (Fig.…”

Section: Discussionmentioning

confidence: 97%

“…The concentration of metals in the sediments at Fusina and San Giuliano was relatively high as we can see by a comparison with the background concentrations estimated for some metals present in the deepest strata of radio-dated cores (pre-industrial values at ca. 0.8-1 m depth) by Pavoni et al (1992) and Bernardello et al (2006). These values in mg g À1 dwt are: As: 10, Hg: 0.1, Cd: 1.0, Cr 20,Cu: 20,Pb: 25,Co: 15,Ni: 20,Zn: 70,and Fe: 20,000.…”

Section: Discussionmentioning

confidence: 99%

“…Tapes philippinarum, characterized by a rapid growth and spread, soon colonized the lagoons and estuaries of the Venice region, growing mainly in the inner areas affected by trophic inflows. Those areas display high nutrient, organic matter, phytoplankton and microphytobenthos concentrations (Facca et al, 2002a,b;Sfriso et al, , 2005d which favour clam growth but, unfortunately, also exhibit high concentrations of pollutants such as some metals (Donazzolo et al, 1984;Marcomini et al, 1997;Bellucci et al, 2002;Bernardello et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies on the Venice lagoon showed that some toxic elements, such as Hg and As, are widespread and exhibit high concentrations in surface sediments (Critto and Marcomini, 2001;Bellucci et al, 2002 and references therein;Bernardello et al, 2006). Tapes philippinarum spread in wide areas, which show a high contamination risk and have been precluded to fishing.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, studies on the settled particulate matter (SPM) rates in the lagoon (Sfriso et al, 2005a,b) show that high amounts of surface sediments (600-1000 kg dwt m À2 y À1 ) are re-suspended and can re-deposit in situ or spread all around. The SPM can have particularly high nutrient and pollutant concentrations and can spread the contaminants accumulated in ''hot areas'' over the whole lagoon Secco et al, 2005;Bernardello et al, 2006). Tapes philippinarum is a sediment-feeder and filter-feeder organism that lives sunken in the sediment.…”

Section: Introductionmentioning

confidence: 99%

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Tapes philippinarum seed exposure to metals in polluted areas of the Venice lagoon

Sfriso

Argese

Bettiol

et al. 2008

Estuarine, Coastal and Shelf Science

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a b s t r a c tThe concentration changes of 12 metals (As, Hg, Cd, Cr, Co, Cu, Pb, Mn, Ni, V, Zn, Fe, and Hg) in the soft tissues of Tapes philippinarum during growth were investigated. Clams were seeded in two contaminated areas of the Venice lagoon (San Giuliano and Fusina) and in an area of the Marano lagoon (Lignano Sabbiadoro) close to the clam-farm where the seed was produced. Metal trends were very different according to the considered element, the study site and the growth period. Arsenic was always higher in clam tissues than in surface sediments and suspended particles in all the three stations. Mercury, Cd and Cu were higher in the clams from Marano and Fusina but not in those from San Giuliano. Zinc and Co in clams exceeded the concentrations in the sediment and suspended particles only at Marano. The other elements (Cr, Pb, Mn, Ni, and Fe) were always higher in SPM and sediments. In general metal concentrations in clams were more highly correlated to concentrations in the suspended particles rather than in the surface sediments and in suspended clams rather than in bottom clams, nevertheless significant differences between stations and contaminants were found. Metal concentrations in clams were always lower than the European regulatory limits.Published by Elsevier Ltd.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tapes philippinarum seed exposure to metals in polluted areas of the Venice lagoon

Sfriso

Argese

Bettiol

et al. 2008

Estuarine, Coastal and Shelf Science

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Application of Sphere Cap Mercury Microelectrodes and Scanning Electrochemical Microscopy (SECM) for Heavy Metal Monitoring at Solid/Solution Interfaces

et al. 2007

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In this paper, a combination of anodic stripping voltammetry (ASV) at mercury microelectrodes and scanning electrochemical microscopy (SECM) was employed to establish the concentration profiles of heavy metal ions at the soil/water interface of a natural sediment and bauxitic-soil sample. Air dried soil samples were equilibrated with aqueous solutions containing 0.5 M NaCl plus acetate buffers or HClO 4 at different concentrations to allow the achievement of different pH either in the aqueous phase or in the soil slurry. It was verified that mixing acidified aqueous solution and the soil without stirring led to concentration profiles displaying a maximum at the water/soil interface. This was explained as due to pH gradients that originated at the soil/water interface and within the soil slurries. On the other hand, mixing the soils and water solutions, under stirring for 24 -48 h, provided almost uniform pH throughout the system. This allowed obtaining uniform metal ion concentrations within the soil slurries. For the evaluation of the concentrations, the anodic charge involved in the stripping step was utilized. The mercury microelectrode was standardized in a 0.5 M NaCl aqueous solution by performing calibration plots over the concentration range 0.1 -500 mM. To evaluate the concentrations of the metal ions in the soil slurries, a procedure was developed to obtain the apparent diffusion coefficients of the metal ions, which depended on the physical properties of the soil such as porosity and tortuosity. The microanalytical methodology proposed here can be utilized for predicting the mobilization of trace elements from soils that comes into contact with acid rain.

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A Survey on the Metal(loid) Accumulation Ability of Spontaneous and Established Plants for the Phytomanagement of an Industrial Landfill in the Venice Lagoon

et al. 2018

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The changing state of contamination in the Lagoon of Venice. Part 2: Heavy metals

Cited by 54 publications

References 21 publications

Tapes philippinarum seed exposure to metals in polluted areas of the Venice lagoon

Tapes philippinarum seed exposure to metals in polluted areas of the Venice lagoon

Application of Sphere Cap Mercury Microelectrodes and Scanning Electrochemical Microscopy (SECM) for Heavy Metal Monitoring at Solid/Solution Interfaces

A Survey on the Metal(loid) Accumulation Ability of Spontaneous and Established Plants for the Phytomanagement of an Industrial Landfill in the Venice Lagoon

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