Polychlorinated dibenzo-p-dioxins (PCDDs) and furans (PCDFs) in urban air and deposition in the United Kingdom

Duarte‐Davidson, Raquel; Clayton, Peter T.; Coleman, Peter J.; Davis, Brian J.; Halsall, Crispin J.; Harding-Jones, Peter.; Pettit, K.; Woodfield, Mike; Jones, Kevin C.

doi:10.1007/bf02986542

Cited by 44 publications

(22 citation statements)

References 11 publications

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“…PCDD/F total fluxes inside the Lagoon were ~12 grams, corresponding to ~ 400 mg TEQ. Higher fluxes were calculated for winter (mean Oct.-Feb.: ∑PCDD/F flux ~ 40 mg TEQ/month) than summer (mean March-Sept.: ∑PCDD/F flux ~ 15 mg TEQ/month), in line with similar seasonal differences reported byDuarte-Davidson et al (1994) andHalsall et al (1997) (Figure4).…”

supporting

confidence: 89%

Measurement of atmospheric deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans in the Lagoon of Venice, Italy

Guerzoni¹,

Rossini²,

Molinaroli

et al. 2004

Chemosphere

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Data on atmospheric fall-out of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were provided by collecting bulk deposition in four stations inside the Lagoon of Venice. A total of 44 monthly samples was collected during the period July 1998-July 1999 in one site near an industrial area (Porto Marghera), one site in the city of Venice, and two sites in the southern- and northernmost ends of the Lagoon. Fluxes of PCDD/Fs were between 0.1 and 470 pg m(-2) d(-1), corresponding to 0-9.2 pg of 2,3,7,8-TCDD equivalents (TEQ) m(-2) d(-1), with a gradient increasing from remote to urban/industrial stations. Thus, annual deposition of PCDD/Fs to the Lagoon (total area=550 km2), calculated with various methods, turned out to be approximately 12 g, corresponding to approximately 400 mg TEQ. Significant differences were found among the stations, with a clear fingerprinting signature (PCDF/PCDD>1) of the deposition collected near Porto Marghera, and a reversed pattern (PCDF/PCDD<1) in the rest of the Lagoon, which pattern was similar to the sediments collected in the same locations. Lastly, the amount of bulk sigmaTEQ of all stations was compared with the guide values for dioxins in depositions proposed by De Fré et al. [Organohalogen Compounds 45 (2000) 324].

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supporting

confidence: 89%

Measurement of atmospheric deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans in the Lagoon of Venice, Italy

Guerzoni¹,

Rossini²,

Molinaroli

et al. 2004

Chemosphere

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“…The PCDD/Fs emitted from some combustion sources (such as domestic heating) are greater in winter and certain atmospheric loss processes (e.g., photolysis) may also vary seasonally. Seasonal changes, with winter levels higher than summer levels (both total PCDD/Fs and total PCDD/F I-TEQ), have been reported by several other researchers [14][15][16]. However, this seasonal trend in air concentrations is suggested by many studies but not by all.…”

Section: Pcdd/fs In the Air Of Surrounding Environments Of Two Mswismentioning

confidence: 82%

Comparisons of levels of polychlorinated dibenzo-p-dioxins/dibenzofurans in the surrounding environment and workplace of two municipal solid waste incinerators

Shih

Wang

Chang

et al. 2006

Journal of Hazardous Materials

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“…This column was successively eluted with increasing eluent strengths to yield the analyte-containing fraction. The 17 2,3,7,8-substituted PCDD/Fs have been analyzed by GC−MS ( , ).…”

Section: Methodsmentioning

confidence: 99%

Observations on PAH, PCB, and PCDD/F Trends in U.K. Urban Air, 1991−1995

Coleman

Lee

Alcock

et al. 1997

Environ. Sci. Technol.

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136

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Ambient air concentrations at London and Manchester are reported for PCBs, PAHs, and PCDD/Fs from 1991 to 1995. This data set suggests that urban PAH concentrations are trending downward in the U.K. ∑PCB concentrations (∑ = congeners 28, 52, 101, 118, 138, 153, and 180) were usually ∼0.2−2 ng m-3 over the study period, with concentrations of the seven PCB congeners (∑PCB) in London generally 2−3 times higher than in Manchester. PCB concentrations have remained quite stable year-on-year over the study period. PCDD/F trends at the two sites were similar, with a decline through 1991−1994, followed by an upturn in 1995. Summer:winter seasonality of PCDD/Fs at both sites has been highly erratic year-on-year and compound-by-compound, far more so than for PAHs and PCBs. This is perhaps best interpreted as a sign that various sources (presumably combustion-derived) have contributed different mixtures of PCDD/Fs of different source strengths at different times to the air at these urban sites. Possible causes are discussed.

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Polychlorinated dibenzo-p-dioxins (PCDDs) and furans (PCDFs) in urban air and deposition in the United Kingdom

Cited by 44 publications

References 11 publications

Measurement of atmospheric deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans in the Lagoon of Venice, Italy

Measurement of atmospheric deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans in the Lagoon of Venice, Italy

Comparisons of levels of polychlorinated dibenzo-p-dioxins/dibenzofurans in the surrounding environment and workplace of two municipal solid waste incinerators

Observations on PAH, PCB, and PCDD/F Trends in U.K. Urban Air, 1991−1995

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