[2F10-15] 核種移行

[2F10] Transport and Deposition Behavior of PEG-Modified Gold Nanoparticles in Natural Barriers

*Carlos Ordonez¹, Shingo Tanaka², Naoko Watanabe², Tamotsu Kozaki² (1. Graduate School of Engineering Hokkaido University, 2. Faculty of Engineering Hokkaido University)

キーワード：radioactive waste disposal, natural barriers, gold nanoparticles, transport, aggregation

In this work, multifunctional gold nanoparticles have been applied as representative natural colloids to understand the impacts of colloid-mediated mobility of radionuclides in natural barriers. Three nanoparticles modified with the same polyethylene glycol (PEG) but of different gold-core sizes were studied. The differences in size have shown to impact the transport and deposition behavior of the gold nanoparticles as our experimental results show.