Nanoecotoxicity effects of engineered silver and gold nanoparticles in aquatic organisms
| العنوان: | Nanoecotoxicity effects of engineered silver and gold nanoparticles in aquatic organisms |
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| المؤلفون: | Julián Blasco, Asunción Fernández, A. Lapresta-Fernández |
| المساهمون: | Junta de Andalucía, Consejo Superior de Investigaciones Científicas (España) |
| المصدر: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| بيانات النشر: | Elsevier BV, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Gold nanoparticle, Chemistry, Aquatic ecosystem, Estuary, Silver nanoparticle, Nanoecotoxicity, Engineered nanoparticle, Nanotechnology, Ecotoxicology, Engineered nanoparticles, Analytical Chemistry, Aquatic organisms, Environmental impact, Freshwater, Colloidal gold, Engineered Nanoparticle, Seawater, Ecotoxicity, Spectroscopy |
| الوصف: | Engineered nanoparticles (ENPs) are increasingly being incorporated into commercial products. A better understanding is required of their environmental impacts in aquatic ecosystems. This review deals with the ecotoxicity effects of silver and gold ENPs (AgNPs and AuNPs) in aquatic organisms, and considers the means by which these ENPs enter aquatic environments, their aggregation status and their toxicity. Since ENPs are transported horizontally and vertically in the water column, we discuss certain factors (e.g., salinity and the presence of natural organic materials), as they cause variations in the degree of aggregation, size range and ENP toxicity. We pay special attention to oxidative stress induced in organisms by ENPs. We describe some of the main analytical methods used to determine reactive oxygen species, antioxidant enzyme activity, DNA damage, protein modifications, lipid peroxidation and relevant metabolic activities. We offer an overview of the mechanisms of action of AgNPs and AuNPs and the ways that relevant environmental factors can affect their speciation, agglomeration or aggregation, and ultimately their bio-availability to aquatic organisms. Finally, we discuss similarities and differences in the adverse effects of ENPs in freshwater and salt-water systems. The authors thank the Regional Government of Andalusia (P09-FQM-4554) and the Spanish national government [CSIC (201060E005 NPHIPER)] for financial support. |
| تدمد: | 0165-9936 |
| DOI: | 10.1016/j.trac.2011.09.007 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b1678f27904d486340971b35d56be2a https://doi.org/10.1016/j.trac.2011.09.007 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....5b1678f27904d486340971b35d56be2a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 01659936 |
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| DOI: | 10.1016/j.trac.2011.09.007 |