Effect of Nano-Al2O3 on the Toxicity and Oxidative Stress of Copper towards Scenedesmus obliquus

Li, Xiaomin; Zhou, Suyang; Fan, Wenhong

doi:10.3390/ijerph13060575

Cited by 29 publications

(11 citation statements)

References 64 publications

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“…An increase in MDA content was also shown in our previous studies [ 16 , 17 ] and in other studies [ 47 , 48 , 49 , 50 , 51 , 52 ]. Li et al [ 47 ] showed that MDA content of Pavlova viridis was increased significantly from 0.5 mg/L of copper and 3.25 mg/L of zinc.…”

Section: Resultssupporting

confidence: 89%

“…Soto et al [ 48 ] evaluated the effect of copper and zinc on P. subcapitata lipid peroxidation using thiobarbituric acid reactive substances assay and reported a significant malondialdehyde increase at 0.025 mg/L copper and 0.1 mg/L zinc. Li et al [ 49 ] found that 1.0 mg/L of Al 2 O 3 NPs had a less effect on MDA production, whereas at high copper concentrations, high MDA productions were measured from both Cu and Cu + Al 2 O 3 exposure systems. Srivastava et al [ 50 ] reported an increase in the content of MDA when Hydrilla verticillata exposed to copper.…”

Section: Resultsmentioning

confidence: 99%

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Biotoxicity of TiO2 Nanoparticles on Raphidocelis subcapitata Microalgae Exemplified by Membrane Deformation

Özkaleli

Erdem

2018

IJERPH

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TiO2 nanoparticles (NPs), which are mainly used in consumer products (mostly cosmetics), have been found to cause ecotoxic effects in the aquatic environment. The green algae Raphidocelis subcapitata, as a representative of primary producers of the freshwater ecosystem, has been frequently used to study the effects of metal oxide NPs. An ecotoxicity study was conducted herein to investigate the effects of TiO2 NPs on survival and membrane deformation of algal cells. Five different concentrations of nano-TiO2 particles (1, 10, 50, 100 and 500 mg/L) were prepared in synthetic surface water samples with five different water quality characteristics (pH 6.4–8.4, hardness 10–320 mg CaCO3/L, ionic strength 0.2–8 mM, and alkalinity 10–245 mg CaCO3/L). Results showed a significant increase in the hydrodynamic diameter of NPs with respect to both NP concentrations and ionic content of the test system. A soft synthetic freshwater system at pH 7.3 ± 0.2 appeared to provide the most effective water type, with more than 95% algal mortality observed at 50, 100 and 500 mg/L NP concentrations. At high exposure concentrations, increased malondialdehyde formations were observed. Moreover, due to membrane deformation, TEM images correlated the uptake of the NPs.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Biotoxicity of TiO2 Nanoparticles on Raphidocelis subcapitata Microalgae Exemplified by Membrane Deformation

Özkaleli

Erdem

2018

IJERPH

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“…Other publications indicate the opposite pattern, namely a reduction in metal ion-induced effects in the presence of nTiO 2 or Al 2 O 3 NP in algae [ 208 , 209 ] or mussels [ 210 ], with an even more pronounced reduction in the presence of DOM [ 211 ]. Follow-up studies suggested that the direction and magnitude of effects caused by a combined exposure of TiO 2 NP and metal ions are triggered by the charge of the most toxic metal ion [ 212 ].…”

Section: Interactions Of Nanoparticles In a Complex Environmentmentioning

confidence: 99%

Nanoparticles in the environment: where do we come from, where do we go to?

et al. 2018

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Nanoparticles serve various industrial and domestic purposes which is reflected in their steadily increasing production volume. This economic success comes along with their presence in the environment and the risk of potentially adverse effects in natural systems. Over the last decade, substantial progress regarding the understanding of sources, fate, and effects of nanoparticles has been made. Predictions of environmental concentrations based on modelling approaches could recently be confirmed by measured concentrations in the field. Nonetheless, analytical techniques are, as covered elsewhere, still under development to more efficiently and reliably characterize and quantify nanoparticles, as well as to detect them in complex environmental matrixes. Simultaneously, the effects of nanoparticles on aquatic and terrestrial systems have received increasing attention. While the debate on the relevance of nanoparticle-released metal ions for their toxicity is still ongoing, it is a re-occurring phenomenon that inert nanoparticles are able to interact with biota through physical pathways such as biological surface coating. This among others interferes with the growth and behaviour of exposed organisms. Moreover, co-occurring contaminants interact with nanoparticles. There is multiple evidence suggesting nanoparticles as a sink for organic and inorganic co-contaminants. On the other hand, in the presence of nanoparticles, repeatedly an elevated effect on the test species induced by the co-contaminants has been reported. In this paper, we highlight recent achievements in the field of nano-ecotoxicology in both aquatic and terrestrial systems but also refer to substantial gaps that require further attention in the future.

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“…High TiO 2 NPs concentration effectively reduced the soluble Zn(II) (and its toxicity) concentrations by adsorbing Zn(II) on ENPs and settling to the bottom of the reactor [129]. Growth inhibition, oxidative stress and Cu(II) uptake by Scenedesmus obliquus were lower in mixture exposure with Al 2 O 3 NPs [143]. TiO 2 NPs reduced the toxicity of Cd(II) to bacterium Escherichia coli and the combined toxicity decreased with the increasing TiO 2 NPs concentrations, which can be explained by the reduction of the free Cd(II) concentration in the exposure medium [111].…”

Section: Reduction Of the Toxicity/bioavailability Of Metallic Pollutmentioning

confidence: 99%

Effects of Mixtures of Engineered Nanoparticles and Metallic Pollutants on Aquatic Organisms

Liu

Slaveykova

2020

Environments

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In aquatic environment, engineered nanoparticles (ENPs) are present as complex mixtures with other pollutants, such as trace metals, which could result in synergism, additivity or antagonism of their combined effects. Despite the fact that the toxicity and environmental risk of the ENPs have received extensive attention in the recent years, the interactions of ENPs with other pollutants and the consequent effects on aquatic organisms represent an important challenge in (nano)ecotoxicology. The present review provides an overview of the state-of-the-art and critically discusses the existing knowledge on combined effects of mixtures of ENPs and metallic pollutants on aquatic organisms. The specific emphasis is on the adsorption of metallic pollutants on metal-containing ENPs, transformation and bioavailability of ENPs and metallic pollutants in mixtures. Antagonistic, additive and synergistic effects observed in aquatic organisms co-exposed to ENPs and metallic pollutants are discussed in the case of “particle-proof” and “particle-ingestive” organisms. This knowledge is important in developing efficient strategies for sound environmental impact assessment of mixture exposure in complex environments.

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Effect of Nano-Al2O3 on the Toxicity and Oxidative Stress of Copper towards Scenedesmus obliquus

Cited by 29 publications

References 64 publications

Biotoxicity of TiO2 Nanoparticles on Raphidocelis subcapitata Microalgae Exemplified by Membrane Deformation

Biotoxicity of TiO2 Nanoparticles on Raphidocelis subcapitata Microalgae Exemplified by Membrane Deformation

Nanoparticles in the environment: where do we come from, where do we go to?

Effects of Mixtures of Engineered Nanoparticles and Metallic Pollutants on Aquatic Organisms

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