Integrating classical and molecular approaches to evaluate the impact of nanosized zero-valent iron (nZVI) on soil organisms

Saccà, Maria Ludovica; Fajardo, Carmen; Costa, Gonzalo; Lobo, Carmen; Nande, Mar; Martín, Margarita

doi:10.1016/j.chemosphere.2013.11.013

Cited by 85 publications

(44 citation statements)

References 34 publications

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“…If the agglomeration occurs after the most reactive phase, it could be considered an advantage because it can help the removal of the reacted particles from the remediated media. This is an important issue because of the uncertainty about the possible toxicity of the nZVI in water and soil ecosystems (Saccà et al, 2014). Therefore, and for an efficient reaction, the nZVI should remain in suspension during the required reaction time and agglomerate (and settle) later.…”

Section: Nzvi Agglomeration Tendencymentioning

confidence: 99%

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Machado

Pacheco

Nouws

et al. 2015

Science of The Total Environment

199

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a b s t r a c t Keywords:Zero-valent iron nanoparticles Green synthesis method Tree leaves Size Reactivity AgglomerationIn the last decades nanotechnology has become increasingly important because it offers indisputable advantages to almost every area of expertise, including environmental remediation. In this area the synthesis of highly reactive nanomaterials (e.g. zero-valent iron nanoparticles, nZVI) is gaining the attention of the scientific community, service providers and other stakeholders. The synthesis of nZVI by the recently developed green bottom-up method is extremely promising. However, the lack of information about the characteristics of the synthetized particles hinders a wider and more extensive application. This work aims to evaluate the characteristics of nZVI synthesized through the green method using leaves from different trees. Considering the requirements of a product for environmental remediation the following characteristics were studied: size, shape, reactivity and agglomeration tendency. The mulberry and pomegranate leaf extracts produced the smallest nZVIs (5-10 nm), the peach, pear and vine leaf extracts produced the most reactive nZVIs while the ones produced with passion fruit, medlar and cherry extracts did not settle at high nZVI concentrations (931 and 266 ppm). Considering all tests, the nZVIs obtained from medlar and vine leaf extracts are the ones that could present better performances in the environmental remediation. The information gathered in this paper will be useful to choose the most appropriate leaf extracts and operational conditions for the application of the green nZVIs in environmental remediation.

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Section: Nzvi Agglomeration Tendencymentioning

confidence: 99%

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Machado

Pacheco

Nouws

et al. 2015

Science of The Total Environment

199

View full text Add to dashboard Cite

show abstract

“…8,18,19 Previous studies on the effects of Fe 0 NPs on microorganisms, such as Bacillus cereus, Pseudomonas stutzeri, and Escherichia coli, have revealed that Fe might be reduced from NPs to lead to stress responses. 7,17,20 Inhibition in embryo development, mortality of spermatozoa, and declines in fertilization in embryos were observed in marine microalgae in response to Fe 0 NP exposure. 12 Li et al 21 indicated that FeNPs disturbed defense systems in embryos of medaka fish.…”

Section: Introductionmentioning

confidence: 99%

“…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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“…Это может вызывать ак-тивное окисление НЧЖ и образование наночастиц оксида железа. Следует отметить, что наночастицы железа имеют высокую химическую реактивность [15], поэтому способны выступать в роли эффектив-ного кофактора в окислительно-восстановительных реакциях. Установлено, что в условиях иммунизации БСА происходит повышение сократительной функ-ции матки, угнетение мейотического созревания ооци-тов, уменьшение количества живых клеток ФОО, тимуса и ЛУ, а также увеличение количества клеток с морфологическими признаками апоптоза и некроза, повреждение ДНК ядер клеток тимуса и ЛУ.…”

Section: Discussionunclassified

Functional state of the ovaries, uterus, thymus and lymph nodes in conditions of experimental immune complex-mediated inflammation and administration of the zero valent iron nanoparticles substance in mice

Sribna¹,

Litvinenko²,

Reznichenko³

et al. 2016

Probl. reprod.

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Integrating classical and molecular approaches to evaluate the impact of nanosized zero-valent iron (nZVI) on soil organisms

Cited by 85 publications

References 34 publications

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

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

Functional state of the ovaries, uterus, thymus and lymph nodes in conditions of experimental immune complex-mediated inflammation and administration of the zero valent iron nanoparticles substance in mice

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