Solubility of AmOHCO{sub 3} in aqueous solution under atmospheric conditions

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Modeling calculations on the solubility of americium have indicated that basic americium carbonate, and not americium trihydroxide, is the solubility-controlling solid in the pH range from 6 to 10 under the influence of atmospheric CO{sub 2}. The solubility of crystalline {sup 243}AmOHCO{sup 3} has been investigated in batch experiments in near-neutral and basic solutions as a function of dissolution time in 0.1 M NaClO{sup 4} at room temperature under oxic conditions. After the solutions reached steady-state conditions, the influence of dissolved solids on the americium concentration in the supernatant solution was studied by utilizing several experimental methods to separate the ... continued below

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9 p.

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Nitsche, H. December 1, 1987.

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Description

Modeling calculations on the solubility of americium have indicated that basic americium carbonate, and not americium trihydroxide, is the solubility-controlling solid in the pH range from 6 to 10 under the influence of atmospheric CO{sub 2}. The solubility of crystalline {sup 243}AmOHCO{sup 3} has been investigated in batch experiments in near-neutral and basic solutions as a function of dissolution time in 0.1 M NaClO{sup 4} at room temperature under oxic conditions. After the solutions reached steady-state conditions, the influence of dissolved solids on the americium concentration in the supernatant solution was studied by utilizing several experimental methods to separate the solution phase from the solid. The solids were characterized by X-ray powder diffraction analysis.

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9 p.

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OSTI; NTIS; INIS; GPO Dep.

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  • Other Information: PBD: Dec 1987

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  • Other: DE93001521
  • Report No.: LBL--21237
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/10179284 | External Link
  • Office of Scientific & Technical Information Report Number: 10179284
  • Archival Resource Key: ark:/67531/metadc1386320

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • December 1, 1987

Added to The UNT Digital Library

  • Nov. 28, 2018, 2:33 p.m.

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  • Dec. 5, 2018, 5:16 p.m.

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Nitsche, H. Solubility of AmOHCO{sub 3} in aqueous solution under atmospheric conditions, report, December 1, 1987; California. (digital.library.unt.edu/ark:/67531/metadc1386320/: accessed January 20, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.