Behavior of titanium dioxide nanoparticles in Lemna minor growth test conditions

Li, Ling; Sillanpää, Markus; Tuominen, Meri; Lounatmaa, Kari; Schultz, Eija

doi:10.1016/j.ecoenv.2012.10.024

Cited by 54 publications

(32 citation statements)

References 27 publications

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“…The lack of internalization, due to particles aggregation, was likely the reason for the absence of toxicity on the macrophytes exposed for 7 days, which is near the maximum concentration tested in this study. The same explanation was suggested by Li et al (2013). Iron is also an essential element to plants which have developed several mechanisms for regulating iron homeostasis (Briat et al 2010).…”

Section: Discussionmentioning

confidence: 85%

Assessing the ecotoxicity of metal nano-oxides with potential for wastewater treatment

Nogueira

Lopes

Rocha-Santos

et al. 2015

Environ Sci Pollut Res

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The rapid development of nanotechnology and the increasing use of nanomaterials (NMs) raise concern about their fate and potential effects in the environment, especially for those that could be used for remediation purposes and that will be intentionally released to the environment. Despite the remarkable emerging literature addressing the biological effects of NMs to aquatic organisms, the existing information is still scarce and contradictory. Therefore, aimed at selecting NMs for the treatment of organic and inorganic effluents, we assessed the potential toxicity of NiO (100 and 10-20 nm), Fe2O3 (≈85 × 425 nm), and TiO2 (<25 nm), to a battery of aquatic organisms: Vibrio fischeri, Raphidocelis subcapitata, Lemna minor, Daphnia magna, Brachionus plicatilis, and Artemia salina. Also a mutagenic test was performed with two Salmonella typhimurium strains. Suspensions of each NM, prepared with the different test media, were characterized by dynamic light scattering (DLS) and eletrophoretic light scattering (ELS). For the assays with marine species, no toxicity was observed for all the compounds. In opposite, statistically significant effects were produced on all freshwater species, being D. magna the most sensitive organism. Based on the results of this study, the tested NMs can be classified in a decreasing order of toxicity NiO (100 nm) > NiO (10-20 nm) > TiO2 (<25 nm) > Fe2O3, allowing to infer that apparently Fe2O3 NMs seems to be the one with less risks for receiving aquatic systems.

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Section: Discussionmentioning

confidence: 85%

Assessing the ecotoxicity of metal nano-oxides with potential for wastewater treatment

Nogueira

Lopes

Rocha-Santos

et al. 2015

Environ Sci Pollut Res

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“…Plants, as an indispensable and essential part of ecosystems, may be subjected to nanomaterial pollutants and therefore may be involved in their fate and importance in the food chains (Ma et al, 2010;Ghodake et al, 2011). The aquatic environment is the ultimate destination of released NPs, and many studies have focused on the toxicity of NPs in aquatic organisms such as aquatic plants (Kumari et al, 2011;Li et al, 2013;Mousavi Kouhi et al, 2015). Among different plant species, the family Lemnaceae has found broad applications in ecotoxicological studies as model organisms (Radic et al, 2010;Torbati, 2016) and the use of duckweed in nanotoxicology investigations has been reported by some previous studies (Juhel et al, 2011;Hu et al, 2013;.…”

Section: Introductionmentioning

confidence: 99%

Comparative phytotoxicity of undoped and Er-doped ZnO nanoparticles onLemna minor L.: changes in plant physiological responses

Torbati¹,

Khataee²,

Saadi³

2017

Turk J Biol

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The present study is the first research on the phytotoxicological effects of Er-doped zinc oxide nanoparticles (NPs) on duckweed (Lemna minor L.), as a model aquatic floating macrophyte. It concentrated on the comparison of the physiological effects of different concentrations of undoped and Er-doped zinc oxide NPs on L. minor. Pure and Er-doped zinc oxide samples were synthesized through a sonochemical method and their morphology and chemical composition were studied by scanning electron microscopy and energy dispersive X-ray analysis. Plant growth, photosynthetic pigment contents, and antioxidant enzyme activities were investigated as indices to assess the effects and toxicity of the NPs on L. minor. Moreover, the dissolution of Zn 2+ from the suspensions of NPs was investigated to clearly determine whether the Zn 2+ released from the NPs was the main source of their toxicity to the plant. The results showed significant changes in the physiological parameters of the plant in response to the treatments. The negative effects of treatments on the growth of L. minor, in order, were Zn 2+ >> ZnO-NPs >> EZO-NPs >> bulk-ZnO. The activity of superoxide dismutase was remarkably increased by increasing the concentration of the contaminants in the plant.

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“…In our study 0.001-1 mg L −1 concentration nTiO 2 resulted in 17-32% inhibition, while Li et al [39] reported no inhibition effect in the 0.01-5 mg L −1 concentration range, when testing a 21 nm particle size nTiO 2 . Li et al [39] found that L. minor accumulated nano-TiO 2 by surface accumulation.…”

Section: Discussionmentioning

confidence: 47%

“…Li et al [39] found that L. minor accumulated nano-TiO 2 by surface accumulation. The accumulation was caused by surface attachment of the particles onto plant cell walls with strong adhesion.…”

Section: Discussionmentioning

confidence: 99%

The Effect of TiO2 Nanoparticles on the Aquatic Ecosystem: A Comparative Ecotoxicity Study with Test Organisms of Different Trophic Levels

Fekete-Kertész

Maros

Gruiz

et al. 2016

Period. Polytech. Chem. Eng.

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Behavior of titanium dioxide nanoparticles in Lemna minor growth test conditions

Cited by 54 publications

References 27 publications

Assessing the ecotoxicity of metal nano-oxides with potential for wastewater treatment

Assessing the ecotoxicity of metal nano-oxides with potential for wastewater treatment

Comparative phytotoxicity of undoped and Er-doped ZnO nanoparticles onLemna minor L.: changes in plant physiological responses

The Effect of TiO2 Nanoparticles on the Aquatic Ecosystem: A Comparative Ecotoxicity Study with Test Organisms of Different Trophic Levels

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