Toxicity assessments of nanoscale zerovalent iron and its oxidation products in medaka (Oryzias latipes) fish

Chen, Pei‐Jen; Su, Chih-Hsiang; Tseng, Chi-Yen; Tan, Shih-Wei; Cheng, Chiung-Hsiang

doi:10.1016/j.marpolbul.2011.02.045

Cited by 76 publications

(36 citation statements)

References 23 publications

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“…The negative effects of nZVI on ostracod 420 mortality could thus also be indirect, due to release of Fe(II). This is in agreement with the findings 421 of Chen et al (2011) who studied the toxic effects of nZVI and its oxidation products in medaka 422 fish larvae. They concluded that nZVI causes hypoxia due to O2 consumption, and that nZVI 423 released excess Fe(II) which caused toxicity due to production of reactive oxygen species (ROS).…”

Section: Toxicity Effects On Ostracods 399supporting

confidence: 90%

“…Briefly, nZVI was prepared by dissolving 50 g of FeSO4•7H2O in 450 mL water 129 immediately before use and mixing with 450 mL of an aqueous solution of 1 % carboxymethyl 130 cellulose (CMC; non-toxic according to Chen et al 2011). ZVI nanoparticles were formed by 131 reducing the ferrous sulphate using a 1.9 M borohydride solution (30 mL, introduced at 5 ml min -132 resolution transmission electron microscopy (JEM-2011; Jeol, Japan, operating at 200 keV), was 134 in the range 20-100 nm.…”

Section: Nanosized Zero-valent Iron Preparation 127mentioning

confidence: 99%

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Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods

2013

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Nano sized zero valent iron (nZVI) has been studied for in-situ remediation of contaminated soil 43 and ground water. However, little is known about its effects on organisms in soil and aquatic 44 ecosystems. In this study, the effect of nZVI on degradation of DDT and its ecotoxicological effects 45 on collembola (Folsomia candida) and ostracods (Heterocypris incongruens) were investigated. 46Two soils were used in suspension incubation experiments lasting for 7 and 30 days; a spiked (20 47 mg DDT kg -1 ) sandy soil and an aged (>50 yrs) DDT-polluted soil (24 mg DDT kg -1 ). These were 48 incubated with 1 or 10 g nZVI kg -1 , and residual toxicity in soil and the aqueous phase tested using 49 ecotoxicological tests with collembola or ostracods. Generally, addition of either concentration of 50 nZVI to soil led to about 50 % degradation of DDT in spiked soil at the end of 7 and 30 d incubation, 51 while the degradation of DDT was less in aged DDT-polluted soil (24 %). Severe negative effects 52 of nZVI were observed on both test organisms after 7 d incubation, but prolonged incubation led 53 to oxidation of nZVI which reduced its toxic effects on the tested organisms. On the other hand, 54DDT had significant negative effects on collembolan reproduction and ostracod development. We 55 conclude that 1g nZVI kg -1 was efficient for significant DDT degradation in spiked soil, while a 56 higher concentration was necessary for treating aged pollutants in soil. The adverse effects of nZVI 57 on tested organisms seem temporary and reduced after oxidation. 58

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Section: Toxicity Effects On Ostracods 399supporting

confidence: 90%

Section: Nanosized Zero-valent Iron Preparation 127mentioning

confidence: 99%

Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods

2013

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“…A tendency for increased respiratory burst activity, myeloperoxidase activity and bactericidal activity was observed in the nano-Fe diet group. The in vitro effects of magnetic iron oxide nanoparticles on dendritic cell activation (Goya et al 2008) and enhanced production of interleukins, cytokines, through intravenous administrations in rat (Chen et al 2011) support our findings. Iron deficiency also causes decreased myeloperoxidase activity, bactericidal activity, neutrophil functions and NBT reductions (Dhur et al 1989;Farthing 1989;Oppenheimer and Hendrickse 1983;Scrimshaw and San Giovanni 1997).…”

Section: Discussionsupporting

confidence: 79%

Nano-Fe as feed additive improves the hematological and immunological parameters of fish, Labeo rohita H.

et al. 2013

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An experiment was conducted to compare the effects of iron oxide nanoparticles (T 1 ) and ferrous sulfate (T 2 ) on Indian major carp, Labeo rohita H. There were significant differences (P \ 0.05) in the final weight of T 1 and T 2 compared with the control. Survival rates were not affected by the dietary treatments. Fish fed a basal diet (control) showed lower (P \ 0.05) iron content in muscle compared to T 1 and T 2 . Furthermore, the highest value (P \ 0.05) of iron content was observed in T 1 . In addition, RBCs and hemoglobin levels were significantly higher in T 1 as compared to other treated groups. Different innate immune parameters such as respiratory burst activity, bactericidal activity and myeloperoxidase activity were higher in nano-Fe-treated diet (T 1 ) as compared to other iron source (T 2 ) and control in 30 days post-feeding. Moreover, nano-Fe appeared to be more effective (P \ 0.05) than ferrous sulfate in increasing muscle iron and hemoglobin contents. Dietary administration of nanoFe did not cause any oxidative damage, but improved antioxidant enzymatic activities (SOD and GSH level) irrespective of different iron sources in the basal diet.

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“…10−12 However, it is unclear how the direct introduction of nZVI and derivatives for environmental remediation will affect natural ecosystems. Many studies have investigated the potential fate and transport of nZVI in natural systems, 8,13−16 and others have found that nZVI and derivatives alone can be toxic to bacteria, 2,17−19 phyto-and zooplankton, 20 fish, 21−23 and earthworms 24 through mechanisms such as oxidative stress [17][18][19][21][22][23]25 and membrane damage. 18,25 Recent studies have focused on ways to decrease the toxicity of nZVI and derivatives, such as the addition of sulfur that has been found to decrease the toxicity of silver nanoparticles.…”

Section: * S Supporting Informationmentioning

confidence: 99%

Remediation of Cadmium Toxicity by Sulfidized Nano-Iron: The Importance of Organic Material

Stevenson

Adeleye

et al. 2017

ACS Nano

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Nanozerovalent iron (nZVI) is widely used for its ability to remove or degrade environmental contaminants. However, the effect of nZVI-pollutant complexes on organisms has not been tested. We demonstrate the ability of a sulfidized derivative of nZVI (FeSSi) to sorb cadmium (Cd) from aqueous media and alleviate Cd toxicity to a freshwater alga for 32 days. FeSSi particles removed over 80% of the aqueous Cd in the first hour and nearly the same concentration of free Cd remained unbound at the end of the experiment. We found that FeSSi particles with Cd sorbed onto them are an order of magnitude more toxic than FeSSi alone. Further, algal-produced organic material facilitates safer remediation of Cd by FeSSi by decreasing the toxicity of FeSSi itself. We developed a dynamic model to predict the maximum Cd concentration FeSSi can remediate without replacing Cd toxicity with its own. FeSSi can remediate four times as much Cd to phytoplankton populations when organic material is present compared to the absence of organic material. We demonstrate the effectiveness of FeSSi as an environmental remediator and the strength of our quantitative model of the mitigation of nanoparticle toxicity by algal-produced organic material.

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Toxicity assessments of nanoscale zerovalent iron and its oxidation products in medaka (Oryzias latipes) fish

Cited by 76 publications

References 23 publications

Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods

Effects of nano-sized zero-valent iron (nZVI) on DDT degradation in soil and its toxicity to collembola and ostracods

Nano-Fe as feed additive improves the hematological and immunological parameters of fish, Labeo rohita H.

Remediation of Cadmium Toxicity by Sulfidized Nano-Iron: The Importance of Organic Material

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