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<p>The radiochemical methods for the characterization of hard-to-measure radionuclides are often complex, laborious and expensive, especially in the case of solid samples. The present work aimed at developing a new optimized method based on Cherenkov counting for the determination of <sup>36</sup>Cl in activated concrete. The primary goal consisted in improving simplicity and cost-effectiveness with respect to currently available methods without sacrificing performance. A chemical recovery of ≈ 90% and high decontamination from interferents were demonstrated. The method also proved to be scalable to large sample masses for clearance purposes, thereby achieving a detection limit &lt; 5&#xa0;mBq&#xa0;g<sup>–1</sup>.</p>

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An optimized radiochemical method for the quantification of 36Cl in irradiated concrete from nuclear decommissioning

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月24日

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  • Andrea Broglia,
  • Gabriele Magugliani,
  • Luca Fornara,
  • Cristiano Piras,
  • Gianmarco Bilancia,
  • Francesco Galluccio,
  • Elena Macerata,
  • Mario Mariani,
  • Eros Mossini

摘要

The radiochemical methods for the characterization of hard-to-measure radionuclides are often complex, laborious and expensive, especially in the case of solid samples. The present work aimed at developing a new optimized method based on Cherenkov counting for the determination of 36Cl in activated concrete. The primary goal consisted in improving simplicity and cost-effectiveness with respect to currently available methods without sacrificing performance. A chemical recovery of ≈ 90% and high decontamination from interferents were demonstrated. The method also proved to be scalable to large sample masses for clearance purposes, thereby achieving a detection limit < 5 mBq g–1.