Assessing the ecological risk of metals in sediments

Ankley, Gerald T.; Toro, Dominic M. Di; Hansen, David J.; Berry, Walter

doi:10.1002/etc.5620151201

Cited by 46 publications

(15 citation statements)

References 27 publications

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“…Based on extensive research, however, it is widely accepted that risk assessments of sediment associated metals should be based on the bioavailable fraction of these metals (Ankley et al, 1996). In this study, changes in land use were simulated under controlled conditions to describe spatial and temporal variation in redox conditions and metal bioavailability and relate these changes to uptake and effects.…”

Section: Discussionmentioning

confidence: 99%

Dynamics of metal availability and toxicity in historically polluted floodplain sediments

Geest

Paumen

2008

Science of The Total Environment

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Dynamics of metal availability and toxicity in historically polluted floodplain sediments van der Geest, H.G.; Leon Paumen, M. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. IntroductionRestoration of riverine floodplains alongside the regulated large European rivers can play an important role in the management of floods by reduction of peak discharges and increase of water storage capacity. Proposed measures include setting back dikes, lowering or removing groynes and embankments, extracting accumulated sediments from the floodplains and excavation of secondary channels in the floodplain (Buijse et al., 2002). However, these measures might also have negative consequences because many floodplains contain high concentrations of sediment associated contaminants. Overbank sedimentation and disposal of dredged sediments resulted in increased concentrations of heavy metals, PACs and other organic toxicants in floodplain soils and sediments (Middelkoop, 2000;Gocht et al., 2001;Winter et al., 2001) that might induce toxic effects (De Haas et al., 2002). Newly constructed side-channels that are foreseen as means to re-naturalize floodplains will have banks that cut through the aged polluted sediments that have in the meantime been covered by cleaner sediment. The banks of these newly created river channels are characterized by a highly dynamic transition zone (Simons et al., 2001), in which toxicants might be subjected to large changes in terms of mobility, transformation and bioavailability ( Van den Berg et al., 1999). On a large scale, differences may be observed between erosion and sedimentation areas and between areas

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Section: Discussionmentioning

confidence: 99%

Dynamics of metal availability and toxicity in historically polluted floodplain sediments

Geest

Paumen

2008

Science of The Total Environment

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“…The AVSmetals hypothesis uses the relative concentrations of two operationally defined classes of components, acid-volatile sulfides and simultaneously extracted metals (SEM), to predict whether metals in sediments may be biologically available. A decade of research has defined and tested this hypothesis (see references in [1]). Acid-volatile sulfides consist of a class of metal sulfides that react with aqueous acids at room temperature to liberate gaseous hydrogen sulfide.…”

Section: Introductionmentioning

confidence: 97%

“…When applied to metals, the approach incorporates the hypothesis that acid-volatile sulfides (AVS) limit the activity and therefore the bioavailability of metals in many sediments [1]. The AVSmetals hypothesis uses the relative concentrations of two operationally defined classes of components, acid-volatile sulfides and simultaneously extracted metals (SEM), to predict whether metals in sediments may be biologically available.…”

Section: Introductionmentioning

confidence: 99%

Biological response to variation of acid‐volatile sulfides and metals in field‐exposed spiked sediments

Boothman

Hansen

Berry

et al. 2001

Enviro Toxic and Chemistry

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Vertical and temporal variations of acid-volatile sulfides (AVS) and simultaneously extracted metals (SEM) in sediment can control biological impacts of metals. To assess the significance of these variations in field sediments, sediments spiked with cadmium, copper, lead, nickel, and zinc were deployed in Narragansett Bay for four months and recolonization by benthic organisms investigated. In surface sediments, concentrations of AVS decreased with time whenever AVS exceeded SEM but remained unchanged when AVS was less than SEM; in subsurface sediments, concentrations increased slightly. Concentrations of total SEM decreased with time only in surface sediments in which SEM exceeded AVS. Metals were not detected in interstitial waters of sediments where AVS exceeded SEM but were significant when SEM exceeded AVS and followed the order of solubilities of their sulfides. Concentrations in interstitial waters decreased with time, but exceeded U.S. Environmental Protection Agency chronic water quality criteria for 56 to 119 d. After 119 d, faunal assemblages in all treatments were similar to controls. Lack of biological response was related to vertical distributions of AVS and SEM. Biological exposure took place in near-surface sediments, where AVS exceeded SEM in even the highest treatments. Therefore, concentrations of metals in interstitial waters were low and consequently biological impacts were undetectable.

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“…Chemical analysis alone is insufficient for the assessment of sediment toxicity. It is impossible to determine every anthropogenic contaminant and, furthermore, the effects of most contaminants on the aquatic organisms are still unknown (Ankley et al, 1996). For this reason, the combination of chemical analysis with biological tests becomes important (Fernández et al, 1992;Brack et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Expression of heat shock protein 70 in a permanent cell line (EPC) exposed to sediment extracts from the North Sea and the Baltic Sea

Kinder

Sierts-Herrmann

Biselli

et al. 2007

Marine Environmental Research

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Assessing the ecological risk of metals in sediments

Cited by 46 publications

References 27 publications

Dynamics of metal availability and toxicity in historically polluted floodplain sediments

Dynamics of metal availability and toxicity in historically polluted floodplain sediments

Biological response to variation of acid‐volatile sulfides and metals in field‐exposed spiked sediments

Expression of heat shock protein 70 in a permanent cell line (EPC) exposed to sediment extracts from the North Sea and the Baltic Sea

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