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Evaluation of the ecotoxicity of model nanoparticles
Barrena Gómez, Raquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Casals, Eudald (Institut Català de Nanotecnologia)
Colón Jordà, Joan (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química)
Font i Segura, Xavier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Puntes, Víctor (Institut Català de Nanociència i Nanotecnologia)

Additional title: Evaluation of model nanoparticles eco-toxicity
Date: 2009
Abstract: Since society at large became aware of the use of nanomaterials in ever growing quantities in consumer products and their presence in the environment, critical interest in the impact of this emerging technology has grown. The main concern is whether the unknown risks of engineered nanoparticles (NPs), in particular their impact on health and environment, outweighs their established benefits for society. Therefore, a key issue in this field is to evaluate their potential toxicity. In this context we evaluated the effects on plants and microorganisms of model nanoparticles, in particular of a stable metal (Au, 10 nm mean diameter), a well-known bactericide (Ag, 2 nm mean diameter) and the broadly used Fe₃O₄ (7 nm mean diameter). The toxicity of these nanoparticles was assayed using standard toxicity tests. Specifically, germination (cucumber and lettuce), bioluminescent (Photobacterium phosphoreum) and anaerobic toxicity tests were performed. Germination tests were conducted at a NP dose of 62, 100 and 116 μg mL⁻¹ for Au, Ag, and Fe₃O₄, respectively. The bioluminscent testing (P. phosphoreum) was conducted at a dose of 28, 45 and 52 μg mL⁻¹ for Au, Ag, and Fe₃O₄, respectively. Finally, anaerobic tests were conducted at a NP dose of 10, 16 and 18 μg mL⁻¹ for Au, Ag, and Fe₃O₄, respectively. In all cases low or zero toxicity was observed. However, some perturbation of the normal functions with respect to controls in germinating tests was observed, suggesting the necessity for further research in this field. At the same time, the effect of NP-solvents was sometimes more significant than that of the NPs themselves, a point that is of special interest for future nanotoxicological studies.
Note: Títol del pre-print: Evaluation of model nanoparticles eco-toxicity
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; submittedVersion
Subject: Anaerobic consortium ; Nanoparticles ; Photobacterium phosphoreum ; Phytotoxicity ; Toxicity effects
Published in: Chemosphere, Vol. 75, Issue 7 (May 2009) , p. 850-857, ISSN 0045-6535

DOI: 10.1016/j.chemosphere.2009.01.078


Pre-print
28 p, 584.8 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Engineering > Composting Research Group (GICOM)
Articles > Research articles
Articles > Published articles

 Record created 2016-09-05, last modified 2020-03-25



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