The role of silver and vanadium release in the toxicity of silver vanadate nanowires toward Daphnia similis

The role of silver and vanadium release in the toxicity of silver vanadate nanowires toward Daphnia similis

Author Artal, Mariana Coletty Google Scholar
Holtz, Raphael Dias Google Scholar
Kummrow, Fábio Autor UNIFESP Google Scholar
Alves, Oswaldo Luiz Google Scholar
Umbuzeiro, Gisela de Aragao Google Scholar
Institution Universidade Estadual de Campinas (UNICAMP)
Universidade Federal de São Paulo (UNIFESP)
Abstract Nanomaterials are used in a wide spectrum of applications, including nanowires that are objects with at least one of its dimensions in the range of 1 to 100nm. Recently, a new type of silver vanadate nanowire decorated with silver nanoparticles (SVSN-LQES1) with promising antimicrobial activity against different pathogenic bacteria was described. the objective of the present study was to evaluate the role of silver and vanadium release in the acute toxicity of this material using Daphnia similis. To verify the effect of the presence of the nanowires in the test solution, tests were performed before and after filtration. Total silver release to the testing media was determined using the method of inductively coupled plasma atomic emission spectroscopy (ICP-AES). Silver vanadate nanowires decorated with silver nanoparticles (SVSN-LQES1) are acutely toxic to D. similis. the release of silver from the nanomaterial trapped in the gut along with the silver released to the test media seems to be responsible for the observed toxicity. Although toxic to Daphnia, vanadium does not contribute to the toxicity of SVSN-LQES1. the observed increase in lipid droplets appears to be related to the exposure of the organisms to the nanomaterials, but the significance of this response needs further investigation. Environ. Toxicol. Chem. 2013;32:908912. (c) 2013 SETAC
Keywords SVSN-LQES1
Silver vanadate nanowires
Ecotoxicity
Nanomaterials
Daphnia similis
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Grant number FAPESP: 2008/57974-9
Date 2013-04-01
Published in Environmental Toxicology and Chemistry. Hoboken: Wiley-Blackwell, v. 32, n. 4, p. 908-912, 2013.
ISSN 0730-7268 (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent 908-912
Origin http://dx.doi.org/10.1002/etc.2128
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000316621700024
URI http://repositorio.unifesp.br/handle/11600/36107

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