PMID: 16646440May 2, 2006Paper

Electron microbeam investigation of uranium-contaminated soils from Oak Ridge, TN, USA

Environmental Science & Technology
Joanne E StubbsChen Zhu

Abstract

Two samples of uranium-contaminated soil from the Department of Energy's Oak Ridge Reservation in Oak Ridge, Tennessee were investigated using electron microprobe analysis and transmission electron microscopy. The objectives of this research were to identify and characterize soil particles and rock chips with high uranium concentrations, to investigate the extent of uranium penetration into chips of parent material, and to identify solid-phase hosts for uranium in the samples. Three distinct solid-phase hosts for uranium have been identified: (1) iron oxyhydroxides, including goethite and ferrihydrite; (2) mixed Mn-Fe oxides; and (3) discrete uranium phosphates. In all three, uranium is associated with phosphorus. The ubiquitous U-P association highlights the influence of phosphate on the environmental fate of uranium. Uranium-bearing phases are found well within chips of weathered shale, as far as 900 microm from fractures and chip edges, indicating that uranium has diffused into the shale matrix.

References

Mar 29, 2002·Environmental Science & Technology·Mark O BarnettScott C Brooks

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Citations

Oct 4, 2013·Environmental Science & Technology·Guillaume OthmaneGeorges Calas
Nov 1, 2013·Environmental Science & Technology·Keisuke FukushiTakashi Mizuno
Nov 10, 2012·Inorganic Chemistry·Kate MaherGordon E Brown
Mar 15, 2011·Chemistry Central Journal·Prashant Kumar Jha, Gary P Halada
Jun 1, 2010·Biochimica Et Biophysica Acta·F Marc MichelDaniel R Strongin
Aug 1, 2015·Environmental Science & Technology·Brandy D StewartPeter S Nico
Nov 10, 2016·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Daniel Marcos BonottoCarlos Roberto Alves Fonseca Filho
Mar 7, 2014·Proceedings of the National Academy of Sciences of the United States of America·Jochen HinkelAnders Levermann
Jan 15, 2009·Journal of Environmental Quality·Andrew S MaddenCraig C Brandt
May 21, 2009·Environmental Science & Technology·Steven C SmithBruce W Arey
Aug 14, 2009·Environmental Science & Technology·Brandy D StewartScott Fendorf
Apr 30, 2008·Environmental Science & Technology·Shelly D KellyWei-Min Wu
Oct 24, 2009·Environmental Science & Technology·Peter S NicoScott Fendorf
Dec 14, 2007·Environmental Science & Technology·Debra H PhillipsYul Roh
Sep 2, 2010·Environmental Science & Technology·Eugene S IltonAndrew R Felmy
Oct 20, 2018·Environmental Science & Technology·Md Samrat AlamDaniel S Alessi

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