Manufactured Nanoparticle Behavior and Transformations in Aquatic Systems. Importance of Natural Organic Matter
| Autor: | Fabrice Carnal, Olena Oriekhova, Serge Stoll, Arnaud Clavier, Zhi Chai, Fatehah Mohd Omar, Frédéric Loosli |
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| Rok vydání: | 2014 |
| Předmět: |
Aquatic systems
Nanoparticle Nanotechnology 02 engineering and technology Ecotoxicology 010402 general chemistry Risk Assessment 01 natural sciences Natural organic matter Nanomaterials Aggregation Adsorption ddc:550 QD1-999 Physicochemical Processes Chemistry Aquatic ecosystem General Medicine General Chemistry 021001 nanoscience & nanotechnology Nanostructures 0104 chemical sciences Disagglomeration Nanoparticle coating Nanoparticles Manufactured nanoparticles 0210 nano-technology Water Pollutants Chemical |
| Zdroj: | Chimia, Vol. 68, No 11 (2014) pp. 783-787 CHIMIA, Vol 68, Iss 11 (2014) |
| ISSN: | 2673-2424 0009-4293 |
| DOI: | 10.2533/chimia.2014.783 |
| Popis: | Major concerns to elucidate the fate of nanomaterials and manufactured nanoparticles in aquatic systems are related to the lack of data on nanoparticle transformations under relevant environmental conditions. The present article discusses some of the important physicochemical processes controlling the behavior of manufactured nanoparticles in aqueous systems by focusing on their interaction with natural organic matter, which is expected to play a crucial role when adsorbing at the nanoparticle surface. The precise knowledge and consequences of such adsorption processes are important not only to predict the nanoparticle stability and dispersion state but also to evaluate their chemical reactivity and ecotoxicology. Most importantly, findings indicate that the presence of natural organic matter, at typical environmental concentrations, can induce significant disagglomeration of large nanoparticle agglomerates into small fragments. Such a result constitutes an important outcome with regard to the risk associated with the possible transformation and redispersion of large assemblies containing manufactured nanoparticles. |
| Databáze: | OpenAIRE |
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