Effect of sediment on the bioaccumulation of a complex mixture of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) by fish

Loonen, H.E.W.M.; Parsons, John R.; Govers, H.A.J.

doi:10.1016/0045-6535(94)90238-0

Cited by 26 publications

(7 citation statements)

References 30 publications

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“…OCDD and OCDF are absorbed at extremely low rates because membrane permeation of chemicals with relatively high molecular weights, such as these, within the fish is inhibited. Hydrophobic compounds with high log Kow values are also less effectively bioaccumulated than those compounds with lower log Kow values, because the former tend to partition strongly to sediments, making them less bioavailable to organisms (Loonen et al, 1994). Our results agree with the results of previous studies, which have shown that the bioaccumulation of PCDD/F congeners cannot solely be explained by their physical-chemical properties.…”

Section: Bioaccumulationsupporting

confidence: 83%

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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Section: Bioaccumulationsupporting

confidence: 83%

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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“…To check whether steady state was reached after 28 d, the BAFs were also calculated using the uptake and elimination rate constants (BAF ϭ k 1 /k 3 ). The time to reach 99% of steady-state concentration, t(99), was calculated from the integrated form of Equation 1 assuming C w ϭ 0 t(99) ϭ ln(100)/k 3 (4)…”

Section: Partition Coefficients and Time To Steady Statementioning

confidence: 99%

“…For instance, Servos et al [2] showed that the uptake of four polychlorinated dibenzo-p-dioxins (PCDDs) in rainbow trout was reduced in the presence of dissolved humic materials [2]. Loonen et al [3] demonstrated that the bioavailability of a number of PCDDs and chlorinated dibenzofurans for guppies was reduced by the presence of small amounts of sediment. Therefore, it has been concluded that sorbed compounds are not immediately bioavailable to pelagic fish.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of polychlorinated dibenzo‐p‐dioxins in sediment by oligochaetes: Influence of exposure pathway and contact time

Loonen

Muir

Parsons

et al. 1997

Enviro Toxic and Chemistry

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Oligochaetes (Lumbriculus variegatus) were exposed simultaneously to radiolabeled [ 3 H]2,3,7,8-tetrachlorodibenzo-pdioxin (TCDD) and [ 14 C]octachlorodibenzo-p-dioxin (OCDD) in sediment for 28 d, in order to study accumulation processes of hydrophobic substances. Elimination was studied for a further 20 d. The uptake and elimination rate constants and the bioaccumulation factors (BAFs) were determined for TCDD and OCDD in the presence and absence of sediment (overlying water). Steady-state concentrations in oligochaetes were achieved for TCDD but not for OCDD over the 28-d exposure. Biota-sediment accumulation factors (BSAFs) after a 28-d exposure were 1.6 Ϯ 0.27 for TCDD and 0.07 Ϯ 0.02 for OCDD. Steady-state log BAF values (lipid based) for TCDD and OCDD in oligochaetes in the overlying water were 5.9 and 5.5 L/kg, respectively. The effect of incubation time between sediment and contaminants was investigated by repeating the accumulation study after a contact period of 21 months. BSAFs of sediment-sorbed TCDD and OCDD were 1.5 to 2-fold lower for the long contact time sediment. Based on comparison of predicted accumulation from pore water and observed accumulation by sediment-exposed oligochaetes, it was concluded that 1.4-fold greater accumulation occurred due to assimilation of TCDD and OCDD from ingested sediment. This additional accumulation in the presence of sediment, not accounted for by uptake only from pore waters, was consistent with literature data for other hydrophobic organochlorines.

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“…The 2,3,7,8-substituted congeners were more highly retained than non-2,3,7,8-substituted isomers because the former are not as easily metabolized as the latter. This is similar to the results of other studies on aquatic organisms [21,22,24]. There was, however, an exception-the retention of 1,3,6,8-T4CDF was comparable to that of 2,3,7,8-T4CDF.…”

Section: Comparisons Of Concentrations In Soils and Frogsmentioning

confidence: 99%

Congener‐specific analysis of polychlorinated dibenzo‐p‐dioxins, dibenzofurans, and coplanar polychlorinated biphenyls in frogs and their habitats, Kitakyushu, Japan

Kadokami

Takeishi

Kuramoto

et al. 2002

Enviro Toxic and Chemistry

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The occurrence and fates of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and coplanar polychlorinated biphenyls (coplanar PCBs) were investigated in two species of frog, mountain brown frog (Rana ornativentris) and Japanese brown frog (Rana japonica), and in soil samples. This study was carried out as part of an investigation aimed at determining the cause of extra forelimbs in the mountain brown frog. Frogs, not including malformed ones, and soil samples were collected at three sites in Kitakyushu, Japan, including the site where the malformed frogs were found and two reference sites. All samples were analyzed for PCDDs/PCDFs and coplanar PCBs. Relatively high concentrations of PCDDs/PCDFs and coplanar PCBs were detected in the soils and frogs collected from all three sites. Comparisons of concentrations in frogs and soils indicated that bioaccumulation of PCDDs/PCDFs was much lower than that of coplanar PCBs and that 2,3,7,8-substituted PCDDs/PCDFs were more highly accumulated than non-2,3,7,8-substituted isomers. From comparison of concentrations between the sexes, it was found that concentrations of dioxins, except for PCDDs, were significantly higher in males than in females. In the present study, relatively high concentrations of dioxins in frogs were found and maternal transfer to the eggs was strongly suspected. However, no difference in dioxin concentrations in frogs between the study site and the reference sites was found, so the cause of the malformations was not dioxins and remains unknown.

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Effect of sediment on the bioaccumulation of a complex mixture of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) by fish

Cited by 26 publications

References 30 publications

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

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

Bioaccumulation of polychlorinated dibenzo‐p‐dioxins in sediment by oligochaetes: Influence of exposure pathway and contact time

Congener‐specific analysis of polychlorinated dibenzo‐p‐dioxins, dibenzofurans, and coplanar polychlorinated biphenyls in frogs and their habitats, Kitakyushu, Japan

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