Ecotoxicological effects on earthworms of fresh and aged nano-sized zero-valent iron (nZVI) in soil

El-Temsah, Yehia S.; Joner, Erik J.

doi:10.1016/j.chemosphere.2012.04.020

Cited by 163 publications

(40 citation statements)

References 49 publications

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“…However, despite the low cost and high efficiency of Fe 0 NPs in removing contaminants, [1][2][3][4][5][6] there are concerns that Fe 0 NP application contributes to long-term impacts on environmental and human health risks. [7][8][9][10][11][12][13][14][15][16][17] Moreover, the increasing use of Fe 0 NPs in in situ groundwater remediation could lead to large numbers of NPs released into the environment and is highly likely to pose potential exposure risks. 8 Several studies have indicated that Fe 0 NPs could cause cytotoxicity in human bronchial epithelial cells.…”

Section: Introductionmentioning

confidence: 99%

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Yang¹,

Lin²,

Liao³

2017

IJN

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Elucidating the relationships between the toxicity-based-toxicokinetic (TBTK)/toxicodynamic (TD) properties of engineered nanomaterials and their nanotoxicity is crucial for human health-risk analysis. Zerovalent iron (Fe 0 ) nanoparticles (NPs) are one of the most prominent NPs applied in remediating contaminated soils and groundwater. However, there are concerns that Fe 0 NP application contributes to long-term environmental and human health impacts. The nematode Caenorhabditis elegans is a surrogate in vivo model that has been successfully applied to assess the potential nanotoxicity of these nanomaterials. Here we present a TBTK/TD approach to appraise bioaccumulation and nanotoxicity of Fe 0 NPs in C. elegans . Built on a present C. elegans bioassay with estimated TBTK/TD parameters, we found that average bioconcentration factors in C. elegans exposed to waterborne and food-borne Fe 0 NPs were ~50 and ~5×10 −3 , respectively, whereas 10% inhibition concentrations for fertility, locomotion, and development, were 1.26 (95% CI 0.19–5.2), 3.84 (0.38–42), and 6.78 (2.58–21) μg·g −1 , respectively, implicating that fertility is the most sensitive endpoint in C. elegans . Our results also showed that biomagnification effects were not observed in waterborne or food-borne Fe 0 NP-exposed worms. We suggest that the TBTK/TD assessment for predicting NP-induced toxicity at different concentrations and conditions in C. elegans could enable rapid selection of nanomaterials that are more likely to be nontoxic in larger animals. We conclude that the use of the TBTK/TD scheme manipulating C. elegans could be used for rapid evaluation of in vivo toxicity of NPs or for drug screening in the field of nanomedicine.

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Section: Introductionmentioning

confidence: 99%

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Yang¹,

Lin²,

Liao³

2017

IJN

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“…More recently, the usage of omics methods (e.g. Jones et al 2008) for the toxicity assessment and measuring the effects of emerging pollutants in earthworms, especially nanoparticles and nanomaterials (Hu et al 2010(Hu et al , 2014Heckmann et al 2011;Hooper et al 2011;Shoults-Wilson et al 2011a, b;El-Temsah and Joner 2012;Tsyusko et al 2012;Hayashi et al 2013), provided new aspects of toxicant effects on earthworms. The assessment of the effects of these pollutants on soil ecosystems is mainly in the initial stage.…”

Section: Advances In Earthworm Ecotoxicologymentioning

confidence: 99%

Important Issues in Ecotoxicological Investigations Using Earthworms

Velki

Ečimović

2016

Reviews of Environmental Contamination and Toxicology

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The importance and beneficial effects of earthworms on soil structure and quality is well-established. In addition, earthworms have proved to be important model organisms for investigation of pollutant effects on soil ecosystems. In ecotoxicological investigations effects of various pollutants on earthworms were assessed. But some important issues regarding the effects of pollutants on earthworms still need to be comprehensively addressed. In this review several issues relevant to soil ecotoxicological investigations using earthworms are emphasized and guidelines that should be adopted in ecotoxicological investigations using earthworms are given. The inclusion of these guidelines in ecotoxicological studies will contribute to the better quantification of impacts of pollutants and will allow more accurate prediction of the real field effects of pollutants to earthworms.

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“…Moreover, the fertility of the soil will be influenced because Fe 2+ will substitute for heavy metal cations in the process of remediation, which will lead to a high Fe content in the soil. Some published papers have shown that too much Fe in soil was detrimental to plants and was disadvantageous for replanting (Mengel 1994;Chen et al 2012;El-Temsah and Joner 2012;Ma et al 2013). In order to overcome these problems in iron phosphate nanoparticle soil remediation, the use of biochar was proposed in this study.…”

Section: Introductionmentioning

confidence: 95%

In situ immobilization of cadmium in soil by stabilized biochar-supported iron phosphate nanoparticles

Fang

Tsang

2016

Environ Sci Pollut Res

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The potential for nanoscale phosphate amendments to remediate heavy metal contamination has been widely investigated, but the strong tendency of nanoparticles to form aggregates limits the application of this technique in soil. This study synthesized a composite of biochar-supported iron phosphate nanoparticle (BC@Fe3(PO4)2) stabilized by a sodium carboxymethyl cellulose to improve the stability and mobility of the amendment in soil. The sedimentation test and column test demonstrated that BC@Fe3(PO4)2 exhibited better stability and mobility than iron phosphate nanoparticles. After 28 days of simulated in situ remediation, the immobilization efficiency of Cd was 60.2 %, and the physiological-based extraction test bioaccessibility was reduced by 53.9 %. The results of sequential extraction procedures indicated that the transformation from exchangeable (EX) Cd to organic matter (OM) and residue (RS) was responsible for the decrease in Cd leachability in soil. Accordingly, the pot test indicated that Cd uptake by cabbage mustard was suppressed by 86.8 %. Compared to tests using iron phosphate nanoparticles, the addition of BC@Fe3(PO4)2 to soil could reduce the Fe uptake of cabbage mustard. Overall, this study revealed that BC@Fe3(PO4)2 could provide effective in situ remediation of Cd in soil.

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Ecotoxicological effects on earthworms of fresh and aged nano-sized zero-valent iron (nZVI) in soil

Cited by 163 publications

References 49 publications

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Toxicity-based toxicokinetic/toxicodynamic assessment of bioaccumulation and nanotoxicity of zerovalent iron nanoparticles in <em>Caenorhabditis elegans</em>

Important Issues in Ecotoxicological Investigations Using Earthworms

In situ immobilization of cadmium in soil by stabilized biochar-supported iron phosphate nanoparticles

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