Bioaccumulation of polychlorinated dibenzo-p-dioxins and dibenzofurans in the foodweb of Ya-Er Lake area, China

Wu, Wenbo; Schramm, Karl‐Werner; Kettrup, A.

doi:10.1016/s0043-1354(00)00376-6

Cited by 49 publications

(38 citation statements)

References 22 publications

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“…Concentrations of PCDD/Fs analyzed in eggs of piscivorous avian species in this study were higher than those observed in black-tailed gull eggs from Rishiri Island, Japan (Choi et al, 2001b). The observed mean PCDDs and PCDFs concentrations in avian eggs analyzed in this study were lower than those from Prince Leopold Island, Canada (Braune and Simon, 2003), Japan (Kumar et al, 2005), Brandenburg, Germany (Wiesmü ller et al, 2002), and Ya-Er Lake, China (Wu et al, 2001). …”

Section: Toxic Equivalents (Teqs) Concentrations and Toxicity Contribcontrasting

confidence: 64%

Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China

et al. 2007

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Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were determined in eggs of eight avian species collected from Dongting Lake of China to assess residue levels, accumulation patterns, and toxic potential in different avian species. Concentrations of total 2,3,7,8-substituted PCDD/Fs were in the range of 10.8-182 pg g À1 lipid weight. Eggs of great egret and lesser pied kingfisher contained higher levels of PCDD/Fs than eggs of other species, indicating the specific exposure and accumulation of PCDD/Fs relating to feeding habits and the life span. PCDD/Fs congener patterns varied among species. The patterns of PCDD/Fs in the eggs may be influenced by feeding habits, specific elimination, and metabolism. In general, concentrations of PCDDs were higher than those of PCDFs in avian eggs. On basis of lipid weight, total 2,3,7,8-TCDD toxic equivalents (TEQs) calculated based on the WHO TEFs for birds ranged from 2.04 to 42.0 pg g À1; and on basis of wet weight, total WHO-TEQs ranged from 0.19 to 1.59 pg g À1 . 2, 3,7, 2,3,4,7, 2,3,7, 1,2,3,7, were the major contributors to TEQ concentration in most avian eggs, whereas 1,2,3,4,7,8-HxCDD also accounted for a major portion of TEQs in eggs of azure-winged magpie. Values of TEQs in avian eggs were lower than toxic threshold values, implying risk reduction and natural restoration of PCDD/Fs contamination in Dongting Lake region.

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Section: Toxic Equivalents (Teqs) Concentrations and Toxicity Contribcontrasting

confidence: 64%

Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China

et al. 2007

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“…Unfortunately, no plausible explanation can be given for the difference at present. Among the few measurements of PCDD/Fs (List 4), the average level (0.0119 ng/L) in Three Gorge Reservoir, the largest reservoir in China , were lower than that (0.0199 ng/L) in Ya-Er Lake of Central China (Supplementary material) (Wu et al, 2001) (Fig. S2).…”

Section: Lakes and Reservoirsmentioning

confidence: 96%

“…S2). The highest I-TEQ of PCDD/Fs in Ya-Er Lake varied between 0.1 and 0.4 pg/L, which may have Tables S1eS4 of the Supplementary material. resulted from the discharge by a chemical plant nearby (Wu et al, 2001). The concentrations of PBDEs (List S3) in a reservoir of Qingyuan, an e-waste recycling site in Guangdong Province of South China, ranged from 23.8 to 25 ng/L (Wu et al, 2008), reflecting potential impact of e-waste recycling activities on surrounding aquatic environments.…”

Section: Lakes and Reservoirsmentioning

confidence: 99%

China's water pollution by persistent organic pollutants

Bao

Maruya

Snyder

et al. 2012

Environmental Pollution

211

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“…These ratios were much higher in some fish species than in sediment samples, indicating that some fish bioaccumulated PCDFs more than PCDDs. The PCDF concentrations were also higher than the PCDD concentrations in fish from Ya-er Lake, China, that had been exposed to the pollutants hexachlorocyclohexane, hexachlorobenzene, and pentachlorophenol (Wu et al, 2001). In that study, the PCDD/F concentrations were lower in the fish and shrimp than in the piscivorous fish that fed on them and in the sediments.…”

Section: Bioaccumulationmentioning

confidence: 69%

Polychlorinated dibenzo-p-dioxins and dibenzofurans in water and six fish species from Dongting Lake, China

Gao

Zhang

et al. 2014

Chemosphere

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h i g h l i g h t sThe PCDD/Fs concentrations in eight water samples from Dongting Lake were determined. PCDD/Fs concentrations were above that allowed by the US EPA. 2,3,7,8-Chlorinated PCDD/F concentration differed in six fish species. The bioaccumulation of PCDD/F congeners cannot solely be explained by their physical-chemical properties. a r t i c l e i n f o a b s t r a c tThere have been few studies of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in environmental water because of the large volume of water required for PCDD/Fs analysis. Water quality directly affects aquatic organisms, and little is known about how PCDD/Fs are transported in aquatic environments. PCDD/Fs were analyzed in eight water samples from Dongting Lake, China, which was contaminated with PCDD/Fs because of sodium pentachlorophenate use between the 1960s and the 1980s. The total PCDD/F concentrations in the samples were 36-345 pg L À1 , and the mean was 191 pg L À1 . Octachlorodibenzo-p-dioxin was the most abundant PCDD/F congener in every sample, contributing 67-95% of the total 2,3,7,8-chlorinated PCDD/F concentrations. The toxic equivalent (WHO-TEQ) concentrations in the samples were 0.17-0.37 pg L À1 , and the mean was 0.28 pg L À1 , which is higher than the Canadian environmental quality guideline (0.038 pg L À1 WHO-TEQ for freshwater) and the United States Environmental Protection Agency water quality criterion (0.014 pg L À1 WHO-TEQ). PCDD/Fs were also determined in six fish species collected from Dongting Lake, to assess the concentrations, accumulation patterns, and potential for toxic effects. The total 2,3,7,8-chlorinated PCDD/F concentrations in the fish samples were 2.2-17.9 pg g À1 (wet weight), and the dominant congeners were octachlorodibenzo-p-dioxin, 1,2,3,4,6,7,8-heptachlorodibenzo-p-dioxin, 1,2,3,4,7,8-hexachlorodibenzop-dioxin, and 2,3,4,7,8-pentachlorodibenzofuran. The PCDD/F WHO-TEQs were 0.10-0.92 ww (3.3-65.3 lw) pg g À1 in different species of fish. PCDD/F congener patterns in fish may be affected by food chain biomagnification and the lipid content of the species.

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Bioaccumulation of polychlorinated dibenzo-p-dioxins and dibenzofurans in the foodweb of Ya-Er Lake area, China

Cited by 49 publications

References 22 publications

Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China

Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China

China's water pollution by persistent organic pollutants

Polychlorinated dibenzo-p-dioxins and dibenzofurans in water and six fish species from Dongting Lake, China

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