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Fullerene Nanoparticles Exhibit Greater Retention in Freshwater Sediment than in Model Porous Media
Citation:
Zhang, W., C. W. Isaacson, U. Rattanaudompol, T. B. POWELL, AND D. BOUCHARD. Fullerene Nanoparticles Exhibit Greater Retention in Freshwater Sediment than in Model Porous Media. WATER RESEARCH. Elsevier Science Ltd, New York, NY, 46(9):2992-3004, (2012).
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Description:
Increasing production and use of fullerene-based nanomaterials underscore the need to determine their mobility in environmental transport pathways and potential ecological exposures. This study investigated the transport of two fullerenes (i.e., aqu/C(60) and water-soluble C(60) pyrrolidine tris-acid [C(60) PTA]) in columns packed with model porous media (Iota quartz and Ottawa sand) and a sediment from Call's creek under saturated and unsaturated steady-state flows. The fullerenes had the least retention in Iota quartz, and the greatest retention in the sediment at near neutral pH, correlating with the degree of grain surface chemical heterogeneity (e.g., amorphous Al hydroxides concentration increasing in the order of Iota quartz
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Fullerene Nanoparticles Exhibit Greater Retention in Freshwater Sediment than in Model Porous Media