Uraninite and fullerene in atmospheric particulates

Satoshi Utsunomiya, Keld A. Jensen, Gerald J. Keeler, Rodney C. Ewing

研究成果: Contribution to journalArticle査読

87 被引用数 (Scopus)

抄録

Particulates emitted from coal-burning power plants typically contain very small amounts of uranium (<10 ppm). Because of the extremely low concentrations, the form of the uranium has been unknown. Using a variety of advanced electron microscopy techniques, we have identified for the first time nanocrystals of uraninite, UO2+x encapsulated in carbonaceous matter (≤50 nm) similar to fullerene. We have also identified, for the first time, closely associated fullerenes, C60. The "carbon-caged" nanocrystals of uraninite are protected from the immediate oxidation that would lead to increased mobility of uranium in the environment. Still, the presence of uranium in the very fine fraction of atmospheric particulates provides another pathway for radiation exposure.

本文言語英語
ページ(範囲)4943-4947
ページ数5
ジャーナルEnvironmental Science and Technology
36
23
DOI
出版ステータス出版済み - 12 1 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

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