Growth inhibition of aquatic plant caused by silver and titanium oxide nanoparticles

Kim, Eun Joo; Kim, Soon Hyun; Kim, Hyun-Chul; Lee, Se Geun; Lee, Sung Jun; Jeong, Sang Won

doi:10.1007/s13530-011-0071-8

Cited by 81 publications

(31 citation statements)

References 28 publications

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“…However, despite no information is available about the concentrations of these NMs in the environmental compartments, in our opinion, concentrations above this level will have no ecological relevance. In fact, Kim et al (2011) andSong et al (2012) found that nano-TiO 2 can cause growth inhibition in two species of Lemna but the concentrations tested were much higher than those tested in our study. Further, these authors have tested nano-TiO 2 with 2-3 and 5-10 nm in size, what may explain the difference in toxicity results.…”

Section: Discussioncontrasting

confidence: 72%

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: Discussioncontrasting

confidence: 72%

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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“…Studies are presently emerging concerning the toxicity of TiO 2 -NPs, especially toward freshwater algae and invertebrates. Growth inhibition of another Lemna species has been observed by Kim et al [13], but at a concentration above 250 mg/L TiO 2 -NPs, which represents a much higher nano-TiO 2 concentration than is currently expected to be present in aquatic ecosystems [14]. The same finding applies to current toxicity data for freshwater invertebrates [11].…”

Section: Introductionsupporting

confidence: 66%

Oxidative stress response of the aquatic macrophyte Hydrilla verticillata exposed to TiO₂ nanoparticles

Okupnik

Pflugmacher

2016

Enviro Toxic and Chemistry

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The present study investigated the effects of titanium dioxide nanoparticles (TiO -NPs) on the oxidative stress response in Hydrilla verticillata. Macrophytes were exposed to different concentrations of TiO -NPs (0 mg/L, 0.01 mg/L, 0.1 mg/L, 1 mg/L, and 10 mg/L) for 24 h, based on currently predicted levels of nano-TiO in surface waters. In addition, TiO -NPs with varying crystalline status were used to assess the potential influence of crystalline phases on oxidative stress responses. The level of hydrogen peroxide (H O ), reduced and oxidized glutathione (GSH and GSSG), and activities of the antioxidative enzymes peroxidase (POD), catalase (CAT), and glutathione reductase (GR) were measured and compared with a bulk counterpart. Although POD was not considered to be active, the results imply an activation of the enzymatic defense system, because increased CAT and GR activities were observed. Exposure to bulk TiO revealed lower enzyme activities at all exposure concentrations, suggesting a nano-specific influence on the antioxidative defense mechanisms in H. verticillata. Moreover, all TiO -NP concentrations resulted in a decreased GSH/GSSG ratio, indicating high GSH-dependent metabolic activity to protect against the destructive effects of reactive oxygen species (ROS) generated during nano-TiO exposure. As the level of H O was solely elevated after exposure to 10 mg/L of P25, it appears plausible that the adaptive metabolic mechanisms of H. verticillata are able to cope with environmentally relevant concentrations of TiO -NPs. Environ Toxicol Chem 2016;35:2859-2866. © 2016 SETAC.

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“…For duckweed, the Ag-NPs toxicity was observed at the 14 ppm concentration, whereas the lowest concentration in which toxicity changes were observed (chlorosis and necrosis) was 1 ppm of Ag-NPs. The Ag-NPs bioaccumulation in the eyelashes and body after 5 days exposure with 10, 20, and 40 ppm concentrations is 55%, 65%, and 19%, respectively (Kim et al 2011). Other literature reports show that the 0.005 ppm Ag-NPs concentration can lead to the 80% inhibition of the duckweed growth (Gubbins et al 2011).…”

Section: Metal Nanoparticlesmentioning

confidence: 90%

“…Ag-NPs can also be used as water disinfectant due to their strong biocidal effect observed in organisms such as Escherichia coli (Choi et al 2008, Cho et al 2005, Sondi and Salopek-Sondi 2004, Wang et al 2012, Radziga et al 2013, Staphylococcus aureus (Choi et al 2008), Caenorhabditis elegans , Marinobacter sp. (Sinha et al 2011), Lemna minor (Gubbins et al 2011, Kim et al 2011, Bacillus subtilis , Wang et al 2012, Saccharomyces cerevisiae, Trichosporon beigellii, Candida albicans ), Ceriodaphnia dubia (Glover and Wood 2004), Daphnia magna (Glover and Wood 2004, Jo et al 2012, Bianchini et al 2005, Blinova et al 2013, Thamnocephalus platyurus (Blinova et al 2013), Agrobacterium tumefaciens (Wang et al 2012), and Pseudomonas aeruginosa, and Serratia proteamaculans (Radziga et al 2013).…”

Section: Metal Nanoparticlesmentioning

confidence: 99%

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

Krzyżewska¹,

Kyzioł-Komosińska²,

Rosik-Dulewska³

et al. 2016

Archives of Environmental Protection

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Abstract:The aim of this paper is to present characteristics, toxicity and environmental behavior of nanoparticles (NPs) (silver, copper, gold, zinc oxide, titanium dioxide, iron oxide) that most frequently occur in consumer products. In addition, NPs are addressed as the new aquatic environmental pollutant of the 21 st century. NPs are adsorbed onto particles in the aquatic systems (clay minerals, fulvic and humic acids), or they can adsorb environmental pollutants (heavy metal ions, organic compounds). Nanosilver (nAg) is released from consumer products into the aquatic environment. It can threaten aquatic organisms with high toxicity. Interestingly, copper nanoparticles (Cu-NPs) demonstrate higher toxicity to bacteria and aquatic microorganisms than those of nanosilver nAg. Their small size and reactivity can cause penetration into the tissues and interfere with the metabolic systems of living organisms and bacterial biogeochemical cycles. The behavior of NPs is not fully recognized. Nevertheless, it is known that NPs can agglomerate, bind with ions (chlorides, sulphates, phosphates) or organic compounds. They can also be bound or immobilized by slurry. The NPs behavior depends on process conditions, i.e. pH, ionic strength, temperature and presence of other chemical compounds. It is unknown how NPs behave in the aquatic environment. Therefore, the research on this problem should be carried out under different process conditions. As for the toxicity, it is important to understand where the differences in the research results come from. As NPs have an impact on not only aquatic organisms but also human health and life, it is necessary to recognize their toxic doses and know standards/regulations that determine the permissible concentrations of NPs in the environment.Unauthenticated Download Date | 5/12/18 7:36 AM

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Growth inhibition of aquatic plant caused by silver and titanium oxide nanoparticles

Cited by 81 publications

References 28 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

Oxidative stress response of the aquatic macrophyte Hydrilla verticillata exposed to TiO₂ nanoparticles

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

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Growth inhibition of aquatic plant caused by silver and titanium oxide nanoparticles

Cited by 81 publications

References 28 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

Oxidative stress response of the aquatic macrophyte Hydrilla verticillata exposed to TiO2 nanoparticles

Inorganic nanomaterials in the aquatic environment: behavior, toxicity, and interaction with environmental elements

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Oxidative stress response of the aquatic macrophyte Hydrilla verticillata exposed to TiO₂ nanoparticles