Effect of agglomeration of silver nanoparticle on nanotoxicity depression

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• 作者：Eunjoo Bae (1)
  Byung-Cheun Lee (2)
  Younghun Kim (3)
  Kyunghee Choi (2)
  Jongheop Yi (1)
  
• 关键词：Nanomaterials ; Silver Nanoparticles ; Nano ; hazard ; Bioaccumulation ; Agglomeration
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2013
• 出版时间：February 2013
• 年：2013
• 卷：30
• 期：2
• 页码：364-368
• 全文大小：1139KB
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• 作者单位：Eunjoo Bae (1)
  Byung-Cheun Lee (2)
  Younghun Kim (3)
  Kyunghee Choi (2)
  Jongheop Yi (1)
  
  1. School of Chemical and Biological Engineering, Seoul National University, Seoul, 151-742, Korea
  2. National Institute of Environmental Research, Incheon, 404-708, Korea
  3. Department of Chemical Engineering, Kwangwoon University, Seoul, 139-701, Korea
  
• ISSN：1975-7220

文摘

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.