Core B: Natural and Incidental Nanomaterials in the Environment

Natural and incidental nanomaterials are ubiquitous in the environment and their impacts must be considered relative to manufactured nanomaterials.

Goals: 

The goals of Core B are to 1) determine characteristics of natural and incidental nanomaterials in the environment, 2) to identify the principal nanometer-scale structural and reactivity differences between natural and synthetic nanomaterials of the same chemical composition, and 3) to refine methods for measuring NPs in the environment. Using asymmetric flow field flow fractionation (AF4) and SEC with in-line DLS, QELS, and ICP-MS detectors in addition to analytical TEM, and x-ray absorption fine structure (XAFS) spectroscopy the abundance of natural NPs in various environments are characterized and methods developed to trace NPs in the environment to their most likely origin.

Selected Publicaitons

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.
A. W. Carpenter, de Lannoy, C. - F. , and Wiesner, M. R. , Cellulose Nanomaterials in Water Treatment Technologies, Environmental Science & Technology, p. 150415160836007, 2015.
C. Jiang and Hsu-Kim, H. , Direct in situ measurement of dissolved zinc in the presence of zinc oxide nanoparticles using anodic stripping voltammetry, Environ. Sci.: Processes Impacts, vol. 16, no. 11, pp. 2536 - 2544, 2014.
R. S. Smith, Wiederhold, J. G. , Jew, A. D. , Brown, Jr, G. E. , Bourdon, B. , and Kretzschmar, R. , Small-scale studies of roasted ore waste reveal extreme ranges of stable mercury isotope signatures, Geochimica et Cosmochimica Acta, vol. 137, pp. 1 - 17, 2014.
A. R. Badireddy, Farner Budarz, J. , Marinakos, S. M. , Chellam, S. , and Wiesner, M. R. , Formation of Silver Nanoparticles in Visible Light-Illuminated Waters: Mechanism and Possible Impacts on the Persistence of AgNPs and Bacterial Lysis, Environmental Engineering Science, vol. 31, no. 7, pp. 338 - 349, 2014.
C. A. Johnson, Freyer, G. , Fabisch, M. , Caraballo, M. A. , Küsel, K. , and Hochella Jr, M. F. , Observations and assessment of iron oxide and green rust nanoparticles in metal-polluted mine drainage within a steep redox gradient, Environmental Chemistry, vol. 11, no. 4, p. 377, 2014.
C. A. Cismasu, Michel, M. F. , Tcaciuc, P. A. , and Brown, Jr, G. E. , Properties of impurity-bearing ferrihydrite III. Effects of Si on the structure of 2-line ferrihydrite, Geochimica et Cosmochimica Acta, vol. 133, pp. 168 - 185, 2014.
B. P. Colman, Espinasse, B. , Richardson, C. J. , Matson, C. W. , Lowry, G. V. , Hunt, D. E. , Wiesner, M. R. , and Bernhardt, E. S. , Emerging Contaminant or an Old Toxin in Disguise? Silver Nanoparticle Impacts on Ecosystems, Environmental Science & Technology, vol. 48, no. 9, pp. 5229 - 5236, 2014.
A. L. - T. Pham, Morris, A. , Zhang, T. , Ticknor, J. , Levard, C. , and Hsu-Kim, H. , Precipitation of nanoscale mercuric sulfides in the presence of natural organic matter: Structural properties, aggregation, and biotransformation, Geochimica et Cosmochimica Acta, vol. 133, pp. 204 - 215, 2014.
B. Kim, Levard, C. , Murayama, M. , Brown, Jr, G. E. , and Hochella Jr, M. F. , Integrated Approaches of X-Ray Absorption Spectroscopic and Electron Microscopic Techniques on Zinc Speciation and Characterization in a Final Sewage Sludge Product, Journal of Environment Quality, vol. 43, no. 3, p. 908, 2014.

Highlights