Bioavailability of Organic Contaminants in Freshwater Environments

Akkanen, Jarkko; Slootweg, Tineke; Mäenpää, Kimmo; Leppänen, Matti T.; Agbo, Stanley O.; Gallampois, Christine; Kukkonen, Jussi V. K.

doi:10.1007/978-3-642-25722-3_2

Cited by 7 publications

(3 citation statements)

References 163 publications

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“…The WFD mainly focusses on water quality but as a major driver in the source–sink dynamics of surface water systems, the influence of sediments has to be considered necessarily [ 6 , 7 ]. Otherwise, analyses will lead to false evaluations of the ecotoxicological potential of those systems [ 8 – 12 ] and therefore, impair the achievement of the ecological goals set by the WFD [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

The importance of sediments in ecological quality assessment of stream headwaters: embryotoxicity along the Nidda River and its tributaries in Central Hesse, Germany

et al. 2018

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BackgroundAlthough the crucial importance of sediments in aquatic systems is well-known, sediments are often neglected as a factor in the evaluation of water quality assessment. To support and extend previous work in that field, this study was conducted to assess the impact of surface water and sediment on fish embryos in the case of a highly anthropogenically influenced river catchment in Central Hesse, Germany.ResultsThe results of 96 h post fertilisation fish embryo toxicity test with Danio rerio (according to OECD Guideline 236) revealed that river samples comprising both water and sediment exert pivotal effects in embryos, whereas surface water alone did not. The most prominent reactions were developmental delays and, to some extent, malformations of embryos. Developmental delays occurred at rates up to 100% in single runs. Malformation rates ranged mainly below 10% and never exceeded 25%.ConclusionA clear relationship between anthropogenic point sources and detected effects could not be established. However, the study illustrates the critical condition of the entire river system with respect to embryotoxic potentials present even at the most upstream test sites. In addition, the study stresses the necessity to take into account sediments for the evaluation of ecosystem health in industrialised areas.

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Section: Introductionmentioning

confidence: 99%

The importance of sediments in ecological quality assessment of stream headwaters: embryotoxicity along the Nidda River and its tributaries in Central Hesse, Germany

et al. 2018

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“…The large reported octanol–water partition coefficient ( K ow ) values of PBDEs (ranging from 10 6 to >10 8 for tri- to decabromodiphenyl ethers) make these substances highly susceptible to partitioning to dissolved organic matter (DOM). This process may alter the transport, bioavailability, and overall fate of these substances in the aquatic environment. − Oligotrophic lakes that are high in DOM and low in suspended solids are abundant throughout the Arctic, making DOM partitioning a significant process influencing the fate of hydrophobic organic contaminants (HOCs). Extensive previous research on the partitioning of other HOCs to DOM suggests that the magnitude of the dissolved organic carbon (DOC)-water equilibrium partition coefficient ( K DOC ) for a given HOC depends on the DOM’s composition, for example, aromaticity, molecular weight, and H/C and O/C atomic ratios, etc. ,− However, Akkanen et al, observed no such correlation for one BDE congener (2,2′,4,4′ tetrabromo diphenyl ether), which yields uncertainty in the relationship between PBDEs and DOM properties.…”

Section: Introductionmentioning

confidence: 99%

Partitioning of Polybrominated Diphenyl Ethers to Dissolved Organic Matter Isolated from Arctic Surface Waters

Wei-Haas

Hageman

Chin

2014

Environ. Sci. Technol.

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Polybrominated diphenyl ethers (PBDEs) are a class of brominated flame retardant that is distally transported to the Arctic. Little is known about the fate of PBDEs in Arctic surface waters, especially in the presence of dissolved organic matter (DOM). DOM has been shown to interact with hydrophobic organic contaminants and can alter their mobility, bioavailability, and degradation in the environment. In this study, the partitioning of six PBDE congeners between Arctic DOM (isolated via solid phase extraction) and water was measured using the aqueous solubility enhancement method. Measured dissolved organic carbon (DOC)-water partition coefficient (KDOC) values were nearly an order of magnitude lower than previously reported values for the same PBDE congeners in soil or commercial organic matter, ranging from 10(3.97) to 10(5.16) L kg(-1) of organic carbon. Measured results compared favorably with values calculated using polyparameter linear free energy models for Suwannee River fulvic acid. Log KDOC values increased with increasing PBDE hydrophobicity. Slightly lower than expected values were observed for the highest brominated congeners, which we attribute to steric hindrance. This study is the first to comprehensively measure KDOC values for a range of PBDE congeners with DOM isolated from Arctic surface waters.

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“…Water partitioning models failed to estimate correctly biota concentrations, whereas polyethylene-based porewater samplers provided the best estimates for biota, particularly for deposit feeders (within 1.6x). More generally, Akkanen et al (2012), who have reviewed passive samplers and their applicability in sediments for organic contaminants, concluded that these methods have proven to be feasible for bioavailability estimations instead of more laborious methods. More generally, Akkanen et al (2012), who have reviewed passive samplers and their applicability in sediments for organic contaminants, concluded that these methods have proven to be feasible for bioavailability estimations instead of more laborious methods.…”

Section: Bioavailability From Sedimentmentioning

confidence: 99%

From Incorporation to Toxicity

Amiard‐Triquet¹

2015

Aquatic Ecotoxicology

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Bioavailability of Organic Contaminants in Freshwater Environments

Cited by 7 publications

References 163 publications

The importance of sediments in ecological quality assessment of stream headwaters: embryotoxicity along the Nidda River and its tributaries in Central Hesse, Germany

The importance of sediments in ecological quality assessment of stream headwaters: embryotoxicity along the Nidda River and its tributaries in Central Hesse, Germany

Partitioning of Polybrominated Diphenyl Ethers to Dissolved Organic Matter Isolated from Arctic Surface Waters

From Incorporation to Toxicity

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