Toxicity of 12 metal-based nanoparticles to algae, bacteria and protozoa
| العنوان: | Toxicity of 12 metal-based nanoparticles to algae, bacteria and protozoa |
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| المؤلفون: | Anne Kahru, Monika Mortimer, Mariliis Sihtmäe, Suman Pokhrel, Lutz Mädler, Villem Aruoja |
| المصدر: | Environmental Science: Nano. 2:630-644 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Reactive oxygen species, biology, Materials Science (miscellaneous), technology, industry, and agriculture, chemistry.chemical_element, Zinc, biology.organism_classification, Vibrio, Microbiology, Algae, chemistry, Environmental chemistry, Toxicity, Solubility, Bacteria, General Environmental Science, EC50 |
| الوصف: | The use of metal-based nanoparticles (NPs) is increasing which leads to their release in water bodies via various waste streams, and thus warrants risk assessment. Consistent biological-effect data of NPs for environmentally relevant test species, which are accompanied by thorough characterization of NPs, are scarce but indispensable for understanding the possible risks of NPs. We composed and tested a library of 12 metal-based nanoparticles (Al2O3, Co3O4, CuO, Fe3O4, MgO, Mn3O4, Sb2O3, SiO2, ZnO, TiO2, WO3 and Pd) using the alga Pseudokirchneriella subcapitata, three bacterial species (Vibrio fischeri, Escherichia coli, Staphylococcus aureus) and the protozoa Tetrahymena thermophila. The NPs were characterized for their physico-chemical properties, solubility and abiotic reactive oxygen species (ROS) production. Also, respective soluble salts were analysed for toxic effects. The algal growth inhibition assay has proven to be the most sensitive and yielded EC50 values for 10 NPs ranging from 0.1 to 58 mg l−1. Algal toxicity correlated with abiotic ROS production of NPs, and the majority of the NPs formed agglomerates that entrapped algal cells. Despite the different sensitivities, there was a common trend in the toxicity of the NPs across different species and test formats: CuO and ZnO had the highest toxicity (EC50 values below 1 mg l−1) among all organism groups except for the protozoa. The high toxicity was mostly due to the shedding of toxic concentrations of Zn and Cu ions; for most of the test species, Al2O3, SiO2, WO3 and Sb2O3 were not toxic below 100 mg l−1 and MgO showed no adverse effects below 100 mg l−1 to any test species in any test setting. |
| تدمد: | 2051-8161 2051-8153 |
| DOI: | 10.1039/c5en00057b |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::67bad5a1784d7e4b3f6e6f7573da11dc https://doi.org/10.1039/c5en00057b |
| رقم الانضمام: | edsair.doi...........67bad5a1784d7e4b3f6e6f7573da11dc |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20518161 20518153 |
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| DOI: | 10.1039/c5en00057b |