Characterization of the interaction of uranyl ions with humic acids by x-ray absorption spectroscopy

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Humic substances are present throughout the environment in soil and natural water. They are organic macromolecules with a variable structural formula, molecular weight, and a wide variety of functional groups depending on their origin. In natural waters, humic substances represent the main component of the {open_quotes}dissolved organic carbon{close_quotes} (DOC). The DOC may vary considerably from 1 mg/L at sea water surfaces to 50 mg/L at the surface in dark water swamps. There is strong evidence that all actinides form complexes with humic substances in natural waters. Therefore, humic substances can play an important role in the environmental migration of radionuclides ... continued below

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18 p.

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Reich, T.; Denecke, M.A. & Pompe, S. November 1, 1995.

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Description

Humic substances are present throughout the environment in soil and natural water. They are organic macromolecules with a variable structural formula, molecular weight, and a wide variety of functional groups depending on their origin. In natural waters, humic substances represent the main component of the {open_quotes}dissolved organic carbon{close_quotes} (DOC). The DOC may vary considerably from 1 mg/L at sea water surfaces to 50 mg/L at the surface in dark water swamps. There is strong evidence that all actinides form complexes with humic substances in natural waters. Therefore, humic substances can play an important role in the environmental migration of radionuclides by enhancing their transport. Retardation through humic substance interaction may be also possible due to formation of precipitating agglomerates. For remediation and restoration of contaminated environmental sites and risk assessment of future nuclear waste repositories, it is important to improve the predictive capabilities for radionuclide migration through a better understanding of the interaction of radionuclides with humic substances.

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18 p.

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OSTI as DE96013232

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  • 210. national meeting of the American Chemical Society (ACS), Chicago, IL (United States), 20-25 Aug 1995

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  • Other: DE96013232
  • Report No.: LBL--38368
  • Report No.: CONF-950801--26
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 266916
  • Archival Resource Key: ark:/67531/metadc665876

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • April 5, 2016, 11:30 a.m.

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Reich, T.; Denecke, M.A. & Pompe, S. Characterization of the interaction of uranyl ions with humic acids by x-ray absorption spectroscopy, article, November 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc665876/: accessed January 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.