Theme 1. Exposure: Transport and Transformations

Transport and Transformations controlled laboratory experiments elucidate fundamental principles determining nanoparticle (NP) surface chemistry, transport and transformation. Work in Theme 1 provides the foundation for understanding nanomaterial bioavailability, organismal responses, trophic transfer and impacts on ecosystem functions (Themes 2 and 3). Indeed, environmental and physiological transformations must be considered to perform reproducible, meaningful experiments assessing potential exposure and impacts of nanomaterials on organisms and ecosystems. The primary tasks in Theme 1 are to: 1) connect the chemistry and size-effects of NPs to their aggregation state and movement in the environment and, 2) characterize biological and chemical transformations of such materials as a basis for understanding environmental persistence, transport and bioavailability.

Goals: 

Work in Theme 1 provides the foundation for understanding nanomaterial bioavailability, organismal responses, trophic transfer and impacts on ecosystem functions (Themes 2 and 3). Indeed, environmental and physiological transformations must be considered to perform reproducible, meaningful experiments assessing potential exposure and impacts of nanomaterials on organisms and ecosystems.

Selected Publicaitons

N. K. Geitner, Marinakos, S. M. , Guo, C. , O’Brien, N. , and Wiesner, M. R. , Nanoparticle Surface Affinity as a Predictor of Trophic Transfer, Environmental Science & Technology, vol. 50, no. 13, pp. 6663 - 6669, 2016.
A. L. Dale, Casman, E. A. , Lowry, G. V. , Lead, J. R. , Viparelli, E. , and Baalousha, M. , Modeling Nanomaterial Environmental Fate in Aquatic Systems, Environmental Science & Technology, vol. 49, no. 5, pp. 2587 - 2593, 2015.
C. O. Hendren, Lowry, G. V. , Unrine, J. M. , and Wiesner, M. R. , A functional assay-based strategy for nanomaterial risk forecasting, Science of The Total Environment, 2015.
L. E. Barton, Auffan, M. , Durenkamp, M. , McGrath, S. , Bottero, J. - Y. , and Wiesner, M. R. , Monte Carlo simulations of the transformation and removal of Ag, TiO2, and ZnO nanoparticles in wastewater treatment and land application of biosolids, Science of The Total Environment, vol. 511, pp. 535 - 543, 2015.
E. Erdim, Badireddy, A. R. , and Wiesner, M. R. , Characterizing reactive oxygen generation and bacterial inactivation by a zerovalent iron-fullerene nano-composite device at neutral pH under UV-A illumination, Journal of Hazardous Materials, vol. 283, pp. 80 - 88, 2015.
S. M. Louie, Spielman-Sun, E. R. , Small, M. J. , Tilton, R. D. , and Lowry, G. V. , Correlation of the Physicochemical Properties of Natural Organic Matter Samples from Different Sources to Their Effects on Gold Nanoparticle Aggregation in Monovalent Electrolyte, Environmental Science & Technology, vol. 49, no. 4, pp. 2188 - 2198, 2015.
Y. Ma, Metch, J. W. , Vejerano, E. P. , Miller, I. J. , Leon, E. C. , Marr, L. C. , Vikesland, P. J. , and Pruden, A. , Microbial community response of nitrifying sequencing batch reactors to silver, zero-valent iron, titanium dioxide and cerium dioxide nanomaterials, Water Research, vol. 68, pp. 87 - 97, 2015.
N. B. Saleh, Aich, N. , Plazas-Tuttle, J. , Lead, J. R. , and Lowry, G. V. , Research strategy to determine when novel nanohybrids pose unique environmental risks, Environ. Sci.: Nano, vol. 2, no. 1, pp. 11 - 18, 2015.
A. L. Dale, Lowry, G. V. , and Casman, E. A. , Much ado about α: reframing the debate over appropriate fate descriptors in nanoparticle environmental risk modeling, Environ. Sci.: Nano, vol. 2, no. 1, pp. 27-32, 2015.
M. D. Montao, Lowry, G. V. , von der Kammer, F. , Blue, J. , and Ranville, J. F. , Current status and future direction for examining engineered nanoparticles in natural systems, Environmental Chemistry, vol. 11, no. 4, p. 351, 2014.

Highlights