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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received March 27, 2012
Accepted September 12, 2012
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Effect of agglomeration of silver nanoparticle on nanotoxicity depression

School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea 1National Institute of Environmental Research, Incheon 404-708, Korea 2Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea
Korean Journal of Chemical Engineering, February 2013, 30(2), 364-368(5), 10.1007/s11814-012-0155-4
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Abstract

Silver nanoparticles (AgNPs) are used commercially in a variety of applications, including textiles, cosmetics, spray cleaning agents, and metal products. AgNP itself, however, is classified as an environmental hazard by Environmental Protection Agency (EPA, USA) Nanotechnology White Paper, due to its toxic, persistent and bioaccumulative characteristics when exposed to the environment. We investigated the cumulative mortality and abnormalities in Japanese medaka (Oryziaslatipes) embryos after exposure to AgNPs. Free AgNPs in solution have a high activity with respect to biological interactions regarding blocking blood flow and distribution of AgNPs into the cells from head to tail of hatched O. latipes. Interestingly, the agglomeration of AgNPs (loss of nanosized characteristics) played an important role in the environmental toxicity. The present study demonstrated that when the AgNPs were exposed in the ecosystem and then formed agglomerates, nanotoxicity was reduced.

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