| Autor: |
Wiesner Mark R., Therezien Mathieu, Schwab Fabienne, Barton Lauren, Hendren Christine, Lowry Gregory V., Badireddy A. Raju, Espinasse Benjamin E., Colman Benjamin P., Bernhardt Emily S., Bottero Jean-Yves, Auffan Mélanie |
| Rok vydání: |
2013 |
| DOI: |
10.1180/minmag.2013.077.5.23 |
| Popis: |
A recent study of silver nanoparticles introduced to a simulated freshwater wetland indicated an initial period of particle removal and associated die off of some aquatic plants. This talk considers the initial transport and fate of nanoparticles introduced to this system from the standpoint of heteroaggregation deposition and dissolution and the implications for short term impacts on rooted aquatic plants. Simulations show that nanoparticles introduced in a complex albeit greatly simplified environment exhibit a wide range of behaviors depending on their affinities for each other and their concentrations. The complexity of these interactions appears to be governed by the relative affinity of nanoparticles for each other (autoaggregation) and with background particles (heteroaggregation) and other native surfaces. Surface affinity as a predictor or nanoparticle fate is explored further in the context of interactions with plant surfaces biofilms and the potential for uptake by plants. A functional assay for determining the affinity of nanoparticles for complex mixtures of native particles is evaluated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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