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Improvements on the method for determining of 210Pb and 210Po in lead

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Abstract

An improved method is proposed to determine the content of 210Pb in lead using 210Po measured by alpha-ray spectrometry. This improved method, which is based on radiochemical separation by DDTC–toluene extraction, employs EDTA and citrate as masking reagents for the lead ions. To selectively extract polonium from an alkaline solution, the pH dependency was examined using a liquid scintillation counting method. And pH 9 was chosen as an extraction condition. Then 210Po was electrodeposited on a stainless steel disk, and the chemical recovery was followed by 209Po tracer. The effectiveness of the new method was validated by the agreement with the analytical results from five samples as determined by gamma-ray spectrometry.

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Acknowledgement

We thank Dr. Masayoshi Yamamoto, Dr. Shunichi Hisamatsu and Dr. Wataru Sato for their suggestions relating to analytical theory and chemical procedures. Additionally, the authors express their gratitude to Dr. Atufumi Mori and Dr. Kazuhiro Shiba, Central Institute of Radioisotope Science in Kanazawa University, for the use of a liquid scintillation counter.

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Authors and Affiliations

  1. Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan

    Masaki Uesugi

  2. Japan Chemical Analysis Center, Chiba, Japan

    Masayasu Noguchi

  3. Faculty of Chemistry, Institute of Science and Engineering, Kanazawa University, Kanazawa, Japan

    Akihiko Yokoyama & Takashi Nakanishi

Authors
  1. Masaki Uesugi
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  2. Masayasu Noguchi
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  3. Akihiko Yokoyama
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  4. Takashi Nakanishi
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Correspondence to Masaki Uesugi.

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Uesugi, M., Noguchi, M., Yokoyama, A. et al. Improvements on the method for determining of 210Pb and 210Po in lead. J Radioanal Nucl Chem 283, 577–584 (2010). https://doi.org/10.1007/s10967-009-0440-9

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  • DOI: https://doi.org/10.1007/s10967-009-0440-9

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