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<p>In radiological emergencies, rapid <sup>90</sup>Sr quantification is vital. This study developed a method for <sup>90</sup>Sr determination in milk and drinking water, using Sr-specific resin separation followed by ICP-MS/MS detection in MS/MS mode to eliminate <sup>90</sup>Zr isobaric interference. Validation demonstrated high recoveries (95–97%) and detection limits (18–22&#xa0;Bq&#xa0;kg<sup>−1</sup>) compliant with European regulation Euratom 2016/52. Inter-laboratory comparisons confirmed the method reproducibility and robustness across diverse setups. Contamination control was identified as essential for method success. The method enables rapid <sup>90</sup>Sr measurement in milk and water, supporting radiological emergency response.</p>

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On the rapid determination of strontium-90 in milk and drinking water using ICP-MS/MS for emergency preparedness

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月29日

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  • Yixuan Liu,
  • Marion Grange,
  • Magnus Mortensen,
  • Marcus Östman,
  • Petra Lagerkvist,
  • Annika Tovedal,
  • Mårten Dario,
  • Marie Carlsson,
  • Mats Eriksson

摘要

In radiological emergencies, rapid 90Sr quantification is vital. This study developed a method for 90Sr determination in milk and drinking water, using Sr-specific resin separation followed by ICP-MS/MS detection in MS/MS mode to eliminate 90Zr isobaric interference. Validation demonstrated high recoveries (95–97%) and detection limits (18–22 Bq kg−1) compliant with European regulation Euratom 2016/52. Inter-laboratory comparisons confirmed the method reproducibility and robustness across diverse setups. Contamination control was identified as essential for method success. The method enables rapid 90Sr measurement in milk and water, supporting radiological emergency response.