69.
Evaluation of titanium dioxide nanoparticle fate and heteroaggregation in natural surface waters
Danielle Slomberg
(CEREGE)
10/03/2015, 14:40
Parallel session 4C: Environmental Release, Fate and Exposure
As development of engineered nanoparticles (ENPs) continues to progress, determination of ENP fate and impact on the natural environment remains challenging, and new strategies utilizing environmentally relevant system compositions and ENP concentrations (i.e., μg/L range) are warranted. Herein, we evaluated the fate of titanium dioxide (TiO2) ENPs in surface waters from a river (Rhône river,...
Li-Piin Sung
(National Institute of Standards and Technology (NIST))
10/03/2015, 15:04
Parallel session 4C: Environmental Release, Fate and Exposure
Additional Authors: Justin M. Gorham, NIST, justin.gorham@nist.gov
Lee L. Yu, NIST, lee.yu@nist.gov
Tinh Nguyen, NIST, tinh.nguyen@nist.gov
Nanocomposites are increasingly used in essentially every segment of the industry from consumer products to aerospace. Regardless the application, both the long-term performance of the composite itself and the fate of the nanomaterials in the matrix...
Melanie Kah
(University of Vienna)
10/03/2015, 15:28
Parallel session 4C: Environmental Release, Fate and Exposure
Research into nanotechnology applications for use in agriculture has become increasingly popular over the past decade. Investigations into the environmental fate of nanopesticides remain scarce however, and the current state of knowledge does not appear to be sufficient for a reliable assessment to be made of the benefits and risks associated with nanopesticides. It is not clear for...
Gregory Lowry
(Carnegie Mellon University)
10/03/2015, 15:52
Parallel session 4C: Environmental Release, Fate and Exposure
We introduce a spatially and temporally resolved mass balance model for sulfidized Ag NP and ZnO NP loadings to the James River Basin in Virginia. The model includes oxygen-, sulfide-, and temperature-dependent NP and byproduct (ion) transformations, oxic and anoxic sediment layers, and flow-dependent sediment transport. Although it has been generally ignored in NP fate models, surface runoff...
Phil Demokritou
(Harvard University)
10/03/2015, 16:16
Parallel session 4C: Environmental Release, Fate and Exposure
Proliferation of Nano-enabled-Products (NEPs) has inevitably raised the urgent question of nano-release during their synthesis,
integration, processing, assembly, usage and eventually recycling or disposal at the end of their life cycle (LC). Apparently, there is a need to study and understand in a systematic manner the release mechanisms and possible exposure routes across the LC of NEPs in...