Polychlorinated biphenyls in sediments of the Venice Lagoon

Frignani, M.; Bellucci, Luca Giorgio; Carraro, Claudio; Raccanelli, Stefano

doi:10.1016/s0045-6535(00)00408-2

Cited by 98 publications

(49 citation statements)

References 7 publications

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“…The PCDD/F concentrations of most of the samples were lower than 100 pg I-TEQ g À1 , which is quite close to values for lightly polluted rivers and bays in other countries, e.g., the Tama River, Tokyo Bay, and Osaka Bay in Japan (Onodera et al, 1999;Hosomi et al, 2003;Takigami et al, 2005); the Lower Great Lakes, North America (Marvin et al, 2002); and the Po River and Venice Lagoon, Italy (Frignani et al, 2001;Fattore et al, 2002). Wu et al (2001b) showed that PCDD/Fs, other than hexachlorocyclohexane (HCH), were prominent pollutants in some areas of the Yangtze River after production of HCH was banned in the late 1990s.…”

Section: Pcdd/f Levels In Environmental Samplessupporting

confidence: 70%

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in China and chemometric analysis of potential emission sources

Zhu¹,

Hirai²,

Yu³

et al. 2008

Chemosphere

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Aimed to give a preliminary image of dioxin pollution in China, chemometric analysis was performed to determine background dioxin levels during the period 1994-2002 and potential emission sources. Using principal components analysis (PCA), the congener profiles of 71 sediment samples from rivers, lakes, and sea bays around China were compared with the congener profiles of various known or suspected industrial, residential, and municipal dioxin sources to determine whether the dioxin residues typically found in a broad range of potential environmental sources could explain the presence of these chemicals in China. It was found that the background dioxin levels of China were similar to those of lightly polluted samples from other countries during the period 1994-2002. Primary ferrous ore sintering and secondary lead and aluminum smelters were the major sources of dioxin emission in China. Chloranil and wastewater from chemical plants, sodium pentachlorophenate, and pulp bleaching were also important sources of dioxin emission. Open burning of e-waste as well as diesel-fueled and leaded gas-fueled vehicles were additional possible sources of dioxin. In contrast to other countries, in China, flue gases from incineration of municipal waste, hazardous waste, and medical waste might be minor sources of dioxin emission.

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Section: Pcdd/f Levels In Environmental Samplessupporting

confidence: 70%

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in China and chemometric analysis of potential emission sources

Zhu¹,

Hirai²,

Yu³

et al. 2008

Chemosphere

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“…Silt and clay fractions were determined with a X-ray Micrometric SediGraph. The results have been already published by Frignani et al (2007) and Giuliani et al (2008) and are here reported for completeness.…”

Section: Introductionmentioning

confidence: 82%

“…1) (Dieu, 2006;Thom, 2006), mainly related to the surrounding highly populated areas. In addition, Frignani et al (2007) discussed polychlorinated biphenyl (PCB) concentrations in sediment cores of the TG-CH lagoon and their data showed no significant improvement in recent times. On the other hand, PCB surficial values were not high compared with polluted environments worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…Surficial samples from sites 02c and 10c in the TG-CH lagoon are fine but both cores, though from very different part of the system, show major changes at depth (approximately 30 cm depth for core 02c, 17 and 10 cm depth for core 10c) that were ascribed to the onset of higher hydrodynamic processes, with the removal of fine sediments. In the last years the water dynamics decreased again, leading to the higher accumulation of fine sediments close to the sediment-water interface (Frignani et al, 2007). Frignani et al (2007) calculated apparent sediment accumulation rates (SARs) of 0.31 and 0.60 cm y À1 for cores 10c and 02c, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…In the last years the water dynamics decreased again, leading to the higher accumulation of fine sediments close to the sediment-water interface (Frignani et al, 2007). Frignani et al (2007) calculated apparent sediment accumulation rates (SARs) of 0.31 and 0.60 cm y À1 for cores 10c and 02c, respectively. The authors suggested that occasionally the environment can get very dynamic (e.g., during typhoons), with a consequent loss of bottom sediments.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

PCDD/Fs in sediments of Central Vietnam coastal lagoons: In search of TCDD

Piazza

Giuliani

Bellucci

et al. 2010

Marine Pollution Bulletin

Self Cite

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Samples from nine Central Vietnam coastal lagoons, together with three soils and sediments collected in 24 two freshwater reservoirs of the Thua Thien-Hué province, were analysed for polychlorinated dibenzo-p- 25 dioxins and dibenzofurans (PCDD/Fs). Total concentrations are low, from 192 to 2912 pg g1 and depth 26 profiles in Tam Giang-Cau Hai (TG-CH) sediment cores show only minor changes over time in PCDD/F 27 input and composition. Octachloro dibenzo-p-dioxin (OCDD) is the prevailing congener (approximately 28 90%), indicating combustion as the main PCDD/F source to these coastal systems, whereas natural forma- 29 tion might be partly responsible for the presence at depth. 2,3,7,8-Tetrachloro dibenzo-p-dioxin (TCDD), 30 largely sprayed together with Agent Orange over the study areas during the war (1961–1971), is absent 31 or very low. This result supports the hypothesis of strong degradation soon after spraying. Multivariate 32 statistical analyses account for the presence of local, short-range sources as observed in the northern part 33 of the TG-CH lagoon

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The sediments of the venice lagoon (Italy) evaluated in a screening risk assessment approach: Part I—application of international sediment quality guidelines

Apitz¹,

Barbanti

Bocci

et al. 2007

Integr Envir Assess & Manag

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A number of studies carried out in recent years have shown the presence of a wide range of contaminants in the Venice Lagoon. It is important to have a good understanding of the ecological quality of Venice Lagoon sediments in order to 1) define and locate areas where a threat to the environment is present and therefore an intervention is needed (i.e., in situ assessment and management); and 2) define sustainable and environmentally correct ways of managing sediments that are to be dredged for navigational purposes or in relation to other interventions (i.e., ex situ management). This study reports on a critical comparison of chemical quality of sediments in Venice Lagoon and its subregions. Data on the Venice Lagoon were compiled from several studies conducted during the past decade on surface sediment contamination; temporal variation and risks for contaminants at depth were not addressed. The comparison of observed pollutant concentrations with local and internationally used sediment quality guidelines (SQGs) was used as a tool to benchmark different sites and for a tier I (screening) ecological risk assessment. Meaning and relevance of a number of SQGs are discussed, together with the options available for carrying out the comparison with sediment data. The screening of the Venice Lagoon sediment quality is discussed from a risk-assessment perspective and appropriate values for use in an in situ-ex situ management framework are suggested. Although there were some differences depending upon which specific SQGs were applied, different SQGs provided the same general picture of screening risk in Venice Lagoon: Although there are geographic differences, median levels for several contaminants in surface sediments exceeded a number of SQGs. Many contaminants exceed threshold effects SQGs, and Hg exceeds probable effects SQGs in most sub-basins except the southern Lagoon. Venice Lagoon south has the lowest screening risk levels, Venice Lagoon central/north has the highest (and is nearest to the Porto Marghera and Venice City Canals sites). Ranges are high in all areas, therefore any remedial or disposal decision should use site-specific data.

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Polychlorinated biphenyls in sediments of the Venice Lagoon

Cited by 98 publications

References 7 publications

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in China and chemometric analysis of potential emission sources

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in China and chemometric analysis of potential emission sources

PCDD/Fs in sediments of Central Vietnam coastal lagoons: In search of TCDD

The sediments of the venice lagoon (Italy) evaluated in a screening risk assessment approach: Part I—application of international sediment quality guidelines

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