Relating metal bioavailability to risk assessment for aquatic species: Daliao River watershed, China

Han, Shuping; Zhang, Ying; Masunaga, Shigeki; Zhou, Siyun; Naito, Wataru

doi:10.1016/j.envpol.2014.02.023

Cited by 26 publications

(15 citation statements)

References 32 publications

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“…Indeed, to mimic the contamination levels observed in Toulon Bay, Pb concentrations were 20-fold lower than Cu concentrations, thus reducing the dose at which the cells Therefore, our study does not allow us to explain precisely this difference of toxicity between Cu and Pb, but the non-essential nature of Pb and potential different ways to enter the cells than Cu represent hypotheses that should be studied in future research (Han et al 2014).…”

Section: Limited Effects Of Pb Contamination On Prokaryotic Communitymentioning

confidence: 94%

Impacts of copper and lead exposure on prokaryotic communities from contaminated contrasted coastal seawaters: the influence of previous metal exposure

Coclet

Garnier

Durrieu

et al. 2020

FEMS Microbiology Ecology

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Our understanding of environmental factors controlling prokaryotic community is largely hampered by the large environmental variability across spatial scales (e.g. trace metal contamination, nutrient enrichment and physicochemical variations) and the broad diversity of bacterial pre-exposure to environmental factors. In this article, we investigated the specific influence of copper (Cu) and lead (Pb) on prokaryotic communities from the uncontaminated site, using mesocosm experiments. In addition, we studied how pre-exposure (i.e. life history) affects communities, with reference to previous metal exposure on the response of three prokaryotic communities to similar Cu exposition. This study showed a stronger influence of Cu contamination than Pb contamination on prokaryotic diversity and structure. We identified 12 and 34 bacterial families and genera, respectively, contributing to the significant differences observed in community structure between control and spiked conditions. Taken altogether, our results point toward a combination of direct negative responses to Cu contamination and indirect responses mediated by interaction with phytoplankton. These identified responses were largely conditioned by the previous exposure of community to contaminants.

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Section: Limited Effects Of Pb Contamination On Prokaryotic Communitymentioning

confidence: 94%

Impacts of copper and lead exposure on prokaryotic communities from contaminated contrasted coastal seawaters: the influence of previous metal exposure

Coclet

Garnier

Durrieu

et al. 2020

FEMS Microbiology Ecology

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“…Recently, studies focusing on the bioavailability of heavy metals are shifted from the total metal concentrations to their chemical species (Dacera and Babel, 2012;Han et al, 2014;Lee et al, 2011;Moreda-Piñeiro et al, 2012). The chemical forms of heavy metals in ambient are defined as five fractions: exchangeable, carbonate, iron-manganese oxides, organic matter and residual (Tessier et al, 1979).…”

Section: Heavy Metals Concentration and Their Chemical Formsmentioning

confidence: 99%

Effects of sediment geochemical properties on heavy metal bioavailability

Zhang

Zeng

et al. 2014

Environment International

655

206

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As the largest container and resource of metals, sediment has a special role in the fate of metals. Factors influencing bioavailability of heavy metals in sediment have never been comprehensively considered and the sediment properties still fail to understand and even controversial. In this review, the mechanisms of sediment properties such as acid-volatile sulfides (AVS), organic matter, texture (clay, silt or sand) and geology, organism behaviors as well as those influencing the bioavailability of metals were analyzed. Under anoxic condition, AVS mainly reduce the solubility and toxicity of metals, while organic matters, Fe-Mn oxides, clay or silt can stabilize heavy metals in elevated oxidative-reductive potential (ORP). Other factors including the variation of pH, redox potential, aging as well as nutrition and the behavior of benthic organism in sediment also largely alter metals mobility and distribution. These factors are often inter-related, and various toxicity assessment methods used to evaluate the bioavailability of trace metals have been also discussed. Additionally, we expect that some novel synthetic materials like polysulfides, nano-materials, provide the substantial amendments for metals pollution in sediment.

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“…By just taking all lability degrees at their maximum values (ξ j = 1), Equation (3) reverts to the useful and widely-used concept of "maximum dynamic concentration" (Unsworth et al, 2006;Balistrieri and Blank, 2008;Bradac et al, 2009;Warnken et al, 2009;Davison and Zhang, 2012;Han et al, 2014;Zhang and Davison, 2015;Zhu and Gueguen, 2016;Macoustra et al, 2019;Cindric et al, 2020),…”

Section: Diffusive Gradient In Thin-films Techniquementioning

confidence: 99%

Speciation of Inorganic Compounds in Aquatic Systems Using Diffusive Gradients in Thin-Films: A Review

et al. 2021

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The speciation of trace metals in an aquatic system involves the determination of free ions, complexes (labile and non-labile), colloids, and the total dissolved concentration. In this paper, we review the integrated assessment of free ions and labile metal complexes using Diffusive Gradients in Thin-films (DGT), a dynamic speciation technique. The device consists of a diffusive hydrogel layer made of polyacrylamide, backed by a layer of resin (usually Chelex-100) for all trace metals except for Hg. The best results for Hg speciation are obtained with agarose as hydrogel and a thiol-based resin. The diffusive domain controls the diffusion flux of the metal ions and complexes to the resin, which strongly binds all free ions. By using DGT devices with different thicknesses of the diffusive or resin gels and exploiting expressions derived from kinetic models, one can determine the labile concentrations, mobilities, and labilities of different species of an element in an aquatic system. This procedure has been applied to the determination of the organic pool of trace metals in freshwaters or to the characterization of organic and inorganic complexes in sea waters. The concentrations that are obtained represent time-weighted averages (TWA) over the deployment period.

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Relating metal bioavailability to risk assessment for aquatic species: Daliao River watershed, China

Cited by 26 publications

References 32 publications

Impacts of copper and lead exposure on prokaryotic communities from contaminated contrasted coastal seawaters: the influence of previous metal exposure

Impacts of copper and lead exposure on prokaryotic communities from contaminated contrasted coastal seawaters: the influence of previous metal exposure

Effects of sediment geochemical properties on heavy metal bioavailability

Speciation of Inorganic Compounds in Aquatic Systems Using Diffusive Gradients in Thin-Films: A Review

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