Separation of lanthanides for isotopic analysis to determine neutron environment in fission reactors

Nicholas E. Sharp, Alice Mignerey, William F. McDonough, Donna Beals

Research output: Contribution to journalConference article

Abstract

The measurement of lanthanide isotopic ratios present in spent nuclear fuel can give information on conditions within a reactor. The reactor environment alters these ratios via two processes: fission production and neutron absorption. Determining such ratios requires a combination of chemical separation, via column chromatography, and analysis with multiple-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). Separation of neodymium involves two columns, cation exchange followed by LN Resin using HCl as the eluant, with MC-ICP-MS providing measurements with ppm precision. Extending the separation to the heavier lanthanides will involve the same columns but will require HCl and alpha-hydroxyisobutyric acid (α-HIBA) as eluants. Based on previous studies α-HIBA will be used with LN resin columns as well as bis-(2-ethylhexyl) phosphoric acid (HDEHP) coated HPLC columns.

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Publication statusPublished - 2011 Dec 1
Externally publishedYes
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: 2011 Aug 282011 Sep 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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