Evaluation of oxidation techniques for preparing bioassay and environmental samples for liquid scintillation counting

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In environmental and biological monitoring for carbon-14 and tritium, the presence of color and chemical quenching agents in the samples can degrade the efficiency of liquid scintillation counting. A series of experiments was performed to evaluate the usefulness, under routine conditions, of first oxidizing the samples to improve the counting by removing the color and quenching agents. The scintillation counter was calibrated for the effects of quenching agents on its counting efficiency. Oxidizing apparatus was tested for its ability to accurately recover the /sup 14/C and /sup 3/H in the samples. Scintillation counting efficiences were compared for a variety of … continued below

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27 pages

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Miller, H.H. October 1, 1979.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 48 times. More information about this report can be viewed below.

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  • Lawrence Livermore Laboratory
    Publisher Info: California Univ., Livermore (USA). Lawrence Livermore Lab.
    Place of Publication: Livermore, California

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In environmental and biological monitoring for carbon-14 and tritium, the presence of color and chemical quenching agents in the samples can degrade the efficiency of liquid scintillation counting. A series of experiments was performed to evaluate the usefulness, under routine conditions, of first oxidizing the samples to improve the counting by removing the color and quenching agents. The scintillation counter was calibrated for the effects of quenching agents on its counting efficiency. Oxidizing apparatus was tested for its ability to accurately recover the /sup 14/C and /sup 3/H in the samples. Scintillation counting efficiences were compared for a variety of oxidized and unoxidized environmental and bioassay samples. The overall conclusion was that, for routine counting, oxidation of such samples is advantageous when they are highly quenched or in solid form.

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27 pages

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NTIS, PC A03/MF A01.

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1979

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  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 22, 2021, 7 p.m.

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Miller, H.H. Evaluation of oxidation techniques for preparing bioassay and environmental samples for liquid scintillation counting, report, October 1, 1979; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc1056175/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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