Sodium Removal from Hanford Waste Simulants Using Hydrated Antimony Pentoxide

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Sodium has been removed from each of the three Hanford waste simulants with Hydrated Antimony Pentoxide (HAP) to facilitate technetium measurement by ICP-MS. Technetium was successfully measured in simulants A and B with small dilutions of the simulants (10x). Matrix interference, probably due to organic components, prevented the accurate measurement of Tc in simulant C. HAP has been used for the selective removal of sodium from samples prior to radiochemical analysis.1-4 The analytical development section of SRTC has successfully used HAP to remove sodium from a simulated sample matrix of a SRS waste tank.5 This sample pretreatment method eliminated signal ... continued below

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Tovo, L.L. November 18, 1999.

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Description

Sodium has been removed from each of the three Hanford waste simulants with Hydrated Antimony Pentoxide (HAP) to facilitate technetium measurement by ICP-MS. Technetium was successfully measured in simulants A and B with small dilutions of the simulants (10x). Matrix interference, probably due to organic components, prevented the accurate measurement of Tc in simulant C. HAP has been used for the selective removal of sodium from samples prior to radiochemical analysis.1-4 The analytical development section of SRTC has successfully used HAP to remove sodium from a simulated sample matrix of a SRS waste tank.5 This sample pretreatment method eliminated signal suppression caused by the 5 molar sodium matrix without affecting the concentration of Pt, Ru, and Re as measured by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). With this initial success, we decided to investigate the use of HAP to remove sodium from the three Hanford waste matrices prior to ICP-MS analysis of technetium. The results of this investigation are summarized in this report.

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Medium: P; Size: vp.

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OSTI as DE00014892

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  • Other Information: PBD: 18 Nov 1999

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  • Report No.: WSRC-TR-99-00370
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/14892 | External Link
  • Office of Scientific & Technical Information Report Number: 14892
  • Archival Resource Key: ark:/67531/metadc627621

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  • November 18, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 5, 2016, 2:43 p.m.

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Tovo, L.L. Sodium Removal from Hanford Waste Simulants Using Hydrated Antimony Pentoxide, report, November 18, 1999; South Carolina. (digital.library.unt.edu/ark:/67531/metadc627621/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.