Characterization of Nanoparticles in Seawater for Toxicity Assessment Towards Aquatic Organisms

Miglietta, Maria Lucia; Rametta, Gabriella; Francia, G. Di; Manzo, Sonia; Rocco, A.; Carotenuto, Rosa; Picione, F. De Luca; Buono, Silvia

doi:10.1007/978-94-007-1324-6_69

Cited by 19 publications

(8 citation statements)

References 4 publications

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“…Both studies attributed the toxicity of ZnO NPs at this low concentration to be due to dissolved Zn (ions). In general, ZnO NPs were found to cause growth inhibition at low concentrations when tested using marine algal species (Miller et al 2010;Miao et al 2010;Wong et al 2010;Peng et al 2011;Miglietta et al 2011;Manzo et al 2013). The mechanism of toxicity of ZnO NPs to algae has been mostly attributed to particles dissolution (Ma et al 2013).…”

Section: Cumulative Effect Of Zno and Tio 2 Nps On Algal Growthmentioning

confidence: 99%

Cumulative effect of zinc oxide and titanium oxide nanoparticles on growth and chlorophyll a content of Picochlorum sp.

Hazeem

Bououdina

Rashdan

et al. 2015

Environ Sci Pollut Res

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The use of nanoparticles (NPs) is of increasing significance due to their large potential for various applications. Great attention should be paid on the possible impacts of nanoparticles on the environment as large amounts of them may reach the environment by accident or voluntarily. Marine algae are potential organisms for usage in nanopollution bioremediation in aquatic system, because of their ability to adapt to long exposure to NPs. Thus, it is of prime importance to study the possible interactions of different NPs with microalgae in assessing their potential environmental risks. Most studies on potential environmental effects of ZnO and TiO2 NPs have been performed independently and following the widely accepted, standardized test systems, which had been developed for the characterization of chemicals. In this study, we have examined the cumulative effect of ZnO and TiO2 NPs on Picochlorum sp. in addition to the individual effects of these NPs over 32 days. Our results indicate that the toxicity and availability of NPs to marine algae are reduced by their aggregation and sedimentation. NPs are found to have a negative effect on algal growth and chlorophyll a concentration during the early growth stages. In contrast, the case is reversed during the late growth stages. There is no significant difference between the effect of the NPs when they are used separately and when both ZnO and TiO2 are used together in the test (P > 0.05).

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Section: Cumulative Effect Of Zno and Tio 2 Nps On Algal Growthmentioning

confidence: 99%

Cumulative effect of zinc oxide and titanium oxide nanoparticles on growth and chlorophyll a content of Picochlorum sp.

Hazeem

Bououdina

Rashdan

et al. 2015

Environ Sci Pollut Res

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“…The growth inhibition was expressed in percent effect with respect to the control. The concentrations of the testing solutions were defined on the basis of a preliminary screening (Miglietta et al 2011) and were 100, 50, 40, 30, 20 10, 7.5, 5, and 1 mg L −1 for TiO 2 and 200, 175, 150, 125, 100, 75, 50, and 5 mg L −1 for SiO 2 .…”

Section: Algal Growth Inhibition Testmentioning

confidence: 99%

“…A test organism particularly sensitive to NP exposure as D. tertiolecta was used (Miglietta et al 2011). The population growth rate alterations were evaluated and determined the no observed effect concentration (NOEC) and EC50 for SiO 2 and TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

The diverse toxic effect of SiO2 and TiO2 nanoparticles toward the marine microalgae Dunaliella tertiolecta

Manzo

Buono

Rametta

et al. 2015

Environ Sci Pollut Res

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Nanoparticles (NPs) are widely used in many industrial applications. NP fate and behavior in seawater are a very important issue for the assessment of their environmental impact and potential toxicity. In this study, the toxic effects of two nanomaterials, silicon dioxide (SiO2) and titanium dioxide (TiO2) NPs with similar primary size (~20 nm), on marine microalgae Dunaliella tertiolecta were investigated and compared. The dispersion behavior of SiO2 and TiO2 NPs in seawater matrix was investigated together with the relative trend of the exposed algal population growth. SiO2 aggregates rapidly reached a constant size (600 nm) irrespective of the concentration while TiO2 NP aggregates grew up to 4 ± 5 μm. The dose-response curve and population growth rate alteration of marine alga D. tertiolecta were evaluated showing that the algal population was clearly affected by the presence of TiO2 NPs. These particles showed effects on 50 % of the population at 24.10 [19.38-25.43] mg L(-1) (EC50) and a no observed effect concentration (NOEC) at 7.5 mg L(-1). The 1 % effect concentration (EC1) value was nearly above the actual estimated environmental concentration in the aquatic environment. SiO2 NPs were less toxic than TiO2 for D. tertiolecta, with EC50 and NOEC values one order of magnitude higher. The overall toxic action seemed due to the contact between aggregates and cell surfaces, but while for SiO2 a direct action upon membrane integrity could be observed after the third day of exposure, TiO2 seemed to exert its toxic action in the first hours of exposure, mostly via cell entrapment and agglomeration.

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“…Due to the hydrophobic nature and the high surface-adsorption potential [6,7], C-NPs may be a serious risk for biota since they can attach to different surfaces, including organisms, [7,8]. Although the numerous publications about the E-NPs impact on the marine environment [7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22], there is still a lack of knowledge in this area.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Genotoxicity and alteration of the Gene Regulatory Network expression during Paracentrotus lividus development in the presence of carbon nanoparticles

et al. 2021

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Nanoparticles are a newly emerging class of pollutants with eco-toxicological impacts on marine ecosystems; they are characterized by nano-scale size which improves their physical, chemical and biological properties. To better understand the mechanisms of embryotoxicity of carbon-based nanoparticles, the genotoxicity and the perturbation of the Gene Regulatory Network (GRN) expression have been investigated during the development of the sea urchin Paracentrotus lividus from fertilization to early pluteus stage. Increasing quantities of carbon nanoparticles (C-NPs), 0.5, 2.5 and 25 × 1013 C-NPs/500 cm3 of filtered seawater were administered during fertilization and the development was monitored up to the early pluteus stage (48 h). DNA damage and gene expression were assayed by Comet assay and Real-Time PCR, respectively. Taken together, our results indicate that embryo malformations taking place in the presence of C-NPs are due to altered regulation of the GNR and to a progressive accumulation of DNA single-strand breaks.

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Characterization of Nanoparticles in Seawater for Toxicity Assessment Towards Aquatic Organisms

Cited by 19 publications

References 4 publications

Cumulative effect of zinc oxide and titanium oxide nanoparticles on growth and chlorophyll a content of Picochlorum sp.

Cumulative effect of zinc oxide and titanium oxide nanoparticles on growth and chlorophyll a content of Picochlorum sp.

The diverse toxic effect of SiO2 and TiO2 nanoparticles toward the marine microalgae Dunaliella tertiolecta

RETRACTED ARTICLE: Genotoxicity and alteration of the Gene Regulatory Network expression during Paracentrotus lividus development in the presence of carbon nanoparticles

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