PCDD/PCDF on land around an industrial site and identification of source

Sandalls, J.; Berryman, Bob; Bennett, Louise; Newstead, Stuart; Fox, Alisa

doi:10.1016/s0045-6535(98)00284-7

“…Overall, the congener patterns in deer did not resemble those of the stack emissions. This may be explained by their partitioning, transformation, and degradation as they move from air into other environmental media [4–6]. Bioconcentration factors were used to account for differences between the PCDD/F homologue profile in the stack emissions and the deer.…”

Section: Resultsmentioning

confidence: 99%

“…The persistent organic pollutants in the atmosphere enter the terrestrial food chain via an air‐vegetation‐herbivore pathway, and they bioaccumulate and biomagnify to higher trophic levels because of their lipophilicity and persistence [1–3]. Because of their wide range of chemical properties, PCB and PCDD/F congeners have been shown to undergo differential transformation on release into the environment as they partition, degrade, and concentrate to varying degrees in biota [4–6].…”

Section: Introductionmentioning

confidence: 99%

Polychlorinated dibenzo‐p‐dioxin, polychlorinated dibenzofuran, and polychlorinated biphenyl accumulation in white‐tailed deer (Odocoileus virginianus) near a magnesium smelter in Quebec, Canada

Tolley

¹

,

Blais

²

2007

Enviro Toxic and Chemistry

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Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) as well as polychlorinated biphenyls (PCBs) were measured in white-tailed deer (Odocoileus virginianus) near a magnesium-refining facility in Quebec (Canada) known to be a source of chlorinated organic compounds to the area. We compared contaminant concentrations in deer caught one year before the start of magnesium production with those measured three years later. Total PCB concentrations were spatially uniform in deer before magnesium production, but after magnesium production began, concentrations were higher near the smelter and decreased with distance. Many of the midrange PCB homologues that bioconcentrate most in deer showed similar relationships. Concentrations of coplanar PCB congeners and cytochrome P4501A expression in deer liver were examined in a subset of the samples, and these also showed a significant inverse relationship with distance after magnesium production began. This pattern was not observed for PCDD/F concentrations in deer. The risk involved for the human population in consuming local deer meat was assessed by applying contaminant concentrations measured in the present study to Health Canada consumption guidelines. Contaminants in deer were not shown to pose a serious risk to the population, but the number of portions of deer from beyond 20 km that could be safely consumed was less restrictive than the number for deer from within a 5-km radius of the magnesium smelter.

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“…o Field monitoring program to confirm exposures and other estimates, and to establish local relationships between air emissions, concentrations in soil, foods, etc., are helpful and essential for validation purposes (Lorber et al 1998;Sandalls et al 1998). • The food pathway is likely to dominate exposures, thus:…”

Section: Methods To Estimate Exposuresmentioning

confidence: 99%

World Health Organization (WHO)

PAREJA¹

2007

Encyclopedia of Environment and Society

0

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“…Overall, the congener patterns in deer did not resemble those of the stack emissions. This may be explained by their partitioning, transformation, and degradation as they move from air into other environmental media [4][5][6]. Bioconcentration factors were used to account for differences between the PCDD/F homologue profile in the stack emissions and the deer.…”

Section: Dioxins and Furans And Npcbsmentioning

confidence: 99%

“…The persistent organic pollutants in the atmosphere enter the terrestrial food chain via an airvegetation-herbivore pathway, and they bioaccumulate and biomagnify to higher trophic levels because of their lipophilicity and persistence [1][2][3]. Because of their wide range of chemical properties, PCB and PCDD/F congeners have been shown to undergo differential transformation on release into the environment as they partition, degrade, and concentrate to varying degrees in biota [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Polychlorinated Dibenzo-p-dioxin, Polychlorinated Dibenzofuran, and Polychlorinated Biphenyl Accumulation in White-Tailed Deer (Odocoileus virginianus) Near a Magnesium Smelter in Quebec, Canada

Tolley¹,

Blais²

2007

Environ Toxicol Chem

0

View full text Add to dashboard Cite

Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) as well as polychlorinated biphenyls (PCBs) were measured in white-tailed deer (Odocoileus virginianus) near a magnesium-refining facility in Quebec (Canada) known to be a source of chlorinated organic compounds to the area. We compared contaminant concentrations in deer caught one year before the start of magnesium production with those measured three years later. Total PCB concentrations were spatially uniform in deer before magnesium production, but after magnesium production began, concentrations were higher near the smelter and decreased with distance. Many of the midrange PCB homologues that bioconcentrate most in deer showed similar relationships. Concentrations of coplanar PCB congeners and cytochrome P4501A expression in deer liver were examined in a subset of the samples, and these also showed a significant inverse relationship with distance after magnesium production began. This pattern was not observed for PCDD/F concentrations in deer. The risk involved for the human population in consuming local deer meat was assessed by applying contaminant concentrations measured in the present study to Health Canada consumption guidelines. Contaminants in deer were not shown to pose a serious risk to the population, but the number of portions of deer from beyond 20 km that could be safely consumed was less restrictive than the number for deer from within a 5-km radius of the magnesium smelter.

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PCDD/PCDF on land around an industrial site and identification of source

Cited by 7 publications

References 3 publications

Polychlorinated dibenzo‐p‐dioxin, polychlorinated dibenzofuran, and polychlorinated biphenyl accumulation in white‐tailed deer (Odocoileus virginianus) near a magnesium smelter in Quebec, Canada

Polychlorinated dibenzo‐p‐dioxin, polychlorinated dibenzofuran, and polychlorinated biphenyl accumulation in white‐tailed deer (Odocoileus virginianus) near a magnesium smelter in Quebec, Canada

World Health Organization (WHO)

Polychlorinated Dibenzo-p-dioxin, Polychlorinated Dibenzofuran, and Polychlorinated Biphenyl Accumulation in White-Tailed Deer (Odocoileus virginianus) Near a Magnesium Smelter in Quebec, Canada

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