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<p>A novel combined ion exchange procedure has been developed as a pretreatment method for accurately measuring Sr-90 in cement solidified body leachates. The experimental results indicated the process had good selective separation effect. In the anion exchange resin separation stage, over 99% of Fe(III) and Co(II) could be removed from the resin column. In P204 extraction resin separation process, the separation coefficient β<sub>(Y/Mn),</sub> β<sub>(Y/Ni),</sub> β<sub>(Y/Sr)</sub>, and β<sub>(Y/Cs)</sub> could reach 624.1, 521.8, 631.2, and 604.1, respectively. It was proved that this process could be used as a pretreatment method for the measurement of Sr-90 in the leaching solution of cement solidification.</p>

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Research on pretreatment methods for measurement of Sr-90 in cement solidified body leachates

  • 期刊论文

  • 发表日期：

    2025年6月17日

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  • Shuang Dai,
  • Xinzhen Li,
  • Mengxing Li,
  • Weibo Zhang,
  • Yong Liu,
  • Yunming Chen,
  • Qi Cao

摘要

A novel combined ion exchange procedure has been developed as a pretreatment method for accurately measuring Sr-90 in cement solidified body leachates. The experimental results indicated the process had good selective separation effect. In the anion exchange resin separation stage, over 99% of Fe(III) and Co(II) could be removed from the resin column. In P204 extraction resin separation process, the separation coefficient β(Y/Mn), β(Y/Ni), β(Y/Sr), and β(Y/Cs) could reach 624.1, 521.8, 631.2, and 604.1, respectively. It was proved that this process could be used as a pretreatment method for the measurement of Sr-90 in the leaching solution of cement solidification.