A nuclear forensic method for determining the age of radioactive cobalt sources

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DOIResolve DOI: http://doi.org/10.1039/c3ay41443d
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleAnalytical Methods
ISSN1759-9660
Volume6
Issue4
Pages983992; # of pages: 10
SubjectAnalytical procedure; Chromatographic separations; Decontamination factors; Mass spectrometric detection; Nuclear forensics; Radioactive cobalt; Solid-phase extraction; Cobalt; Liquid chromatography; Nickel; Optimization; Radioactivity; Resins; Radiation decontamination
AbstractAn analytical procedure for determining the relative amounts of ⁶⁰Co and its ⁶⁰Ni daughter in a radioactive cobalt source by means of chromatographic separation and radiometric and mass spectrometric detection was developed, optimized and assessed through two round robin exercises for nuclear forensic investigations. Solid phase extraction (EXC) using Ni resin (Eichrom) and ion exchange (IEC) using Dowex-1X8 (Acros Organics) chromatographic approaches were considered for separating Co and Ni. Decontamination factors of 25 and 2.8 × 10&#8310 were measured for EXC and IEC, respectively. Based on those results, only the IEC option was pursued. The effects of particle size, mass of resin, and degree of cross-linkage for decontamination performance were assessed, and the loading/eluting conditions were optimized. Canadian (CNSC, RPB, UL, RMC, AECL) and American (ANL) laboratories participated in two round robin exercises designed by the National Research Council of Canada to determine the suitability and limitations of the proposed methods. Age determination for freshly irradiated sources (<1 a) and for sources with high Ni content was challenging for the laboratories. Nevertheless, age estimates were obtained with sufficient accuracy for nuclear forensic purposes.
Publication date
PublisherRoyal Society of Chemistry
LanguageEnglish
AffiliationNational Research Council Canada; Measurement Science and Standards
Peer reviewedYes
NPARC number21272626
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Record identifier629600d6-50e6-45b8-bf47-52a4e6695964
Record created2014-12-03
Record modified2016-05-09
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