Measurement of radionuclides using ion chromatography and flow-cell scintillation counting with pulse shape discrimination

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Principal conclusions are: CsI(Tl) provides sufficient pulse shape discrimination for use in the flow-cell detector. However, an improved method of coating is needed to extend the useful life of a detection cell. Of the activation/fission products investigated, only the co-elution of {sup 137}Cs and {sup 63}Ni produced a radiological interference. Tritium (and presumably other non-ionic radioisotopes) can be separated during the loading of the solution onto the pre- concentration column. Natural U (and/or decay products) produced a radiological interference with {sup 90}Sr. This is a potential problem. No potential radiological interferences were observed with {sup 223}Th. Chemical interferences were observed ... continued below

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11 p.

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DeVol, T.A.; Fjeld, R.A.; Roane, J.E.; Leyba, J.D. & Branton, S.D. December 31, 1996.

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Description

Principal conclusions are: CsI(Tl) provides sufficient pulse shape discrimination for use in the flow-cell detector. However, an improved method of coating is needed to extend the useful life of a detection cell. Of the activation/fission products investigated, only the co-elution of {sup 137}Cs and {sup 63}Ni produced a radiological interference. Tritium (and presumably other non-ionic radioisotopes) can be separated during the loading of the solution onto the pre- concentration column. Natural U (and/or decay products) produced a radiological interference with {sup 90}Sr. This is a potential problem. No potential radiological interferences were observed with {sup 223}Th. Chemical interferences were observed to some degree for all the chemicals tested except for the chloride solutions, NaCl and KCl, and the sulfate solution, Na{sub 2}SO{sub 4}. The specific interference effects were decreased detection efficiencies and changes in peak elution times. The NEL`s (non-observable effects loadings) are tentative targets for development of sample processing protocols, which is the next phase of the work.

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11 p.

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INIS; OSTI as DE97052250

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  • Conference on industry partnerships to deploy environmental technology, Morgantown, WV (United States), 22-24 Oct 1996

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  • Other: DE97052250
  • Report No.: DOE/MC/32110--97/C0810
  • Report No.: CONF-9610231--9
  • Grant Number: AR21-95MC32110
  • Office of Scientific & Technical Information Report Number: 492376
  • Archival Resource Key: ark:/67531/metadc679187

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1996

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  • July 25, 2015, 2:21 a.m.

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  • June 13, 2016, 8:12 p.m.

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DeVol, T.A.; Fjeld, R.A.; Roane, J.E.; Leyba, J.D. & Branton, S.D. Measurement of radionuclides using ion chromatography and flow-cell scintillation counting with pulse shape discrimination, article, December 31, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc679187/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.