Challenges in Characterizing Small Particles : exploring by Tina M Masciangioli; Joe Alper; National Research Council

By Tina M Masciangioli; Joe Alper; National Research Council (U.S.). Chemical Sciences Roundtable

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Aluminum, PREPUBLICATION COPY 37 Copyright © National Academy of Sciences. All rights reserved. Challenges in Characterizing Small Particles: Exploring Particles from the Nano- to Microscales for example, makes a great conductive film, and metal films in general make superior barriers. Particle dimensionality plays a large role in defining the bulk physical properties that a nanomaterial can add to the material being designed, and Silverman briefly described the design rules that come from that relationship.

PREPUBLICATION COPY 41 Copyright © National Academy of Sciences. All rights reserved. Challenges in Characterizing Small Particles: Exploring Particles from the Nano- to Microscales Smith concluded by stating that acid-based chemistry plays an important role in the formation and growth of these new particles and that amines appear to be important compounds involved in new particle growth. ” But despite this awareness, very little is known about amines, where they come from, and what their fate is in the atmosphere.

2006). These nanoparticles provide most of the iron that ocean-dwelling phytoplankton require for photosynthesis, which is the most important biological CO2 sink in the ocean. At the largest non-weapons-related Superfund site in the United States, a contaminated mining site in Western Montana the size of Germany, researchers have found previously unknown nanoparticles in the rivers draining into the site from Butte, Montana, including titanium dioxide and lead nanoparticles. These findings prompted Hochella and his group to attempt to better understand how metals as toxic as lead, copper, zinc, arsenic, and cadmium move in the river system.

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