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Updated: Jul 23, 2025

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

液体Sr-Y来源的年龄测定

Hanna Vasylyeva¹, Ivan Mironyuk², Mykola Strilchuk³

¹Uzhhorod National University, Uzhhorod, Ukraine.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

|July 14, 2023

概括

这项研究引入了一种新的方法,用于测定-90 (Sr) 的年龄,使用二氧化 (TiO2) 吸附剂来分离-90 (Zr). 这种技术与ICP-MS相结合,可以准确地确定Sr-Y源的年龄.

科学领域:

放射化学放射化学是指辐射化学.
分析化学分析化学
材料科学材料科学材料科学

背景情况:

精确的放射性源的年龄约定,如90Sr对于核废物管理和环境监测至关重要.
从 (Sr) 和 (Y) 分离 (Zr) 是确定Sr-Y源的年龄的一个关键挑战.

研究的目的:

为了研究离子的选择性吸附,使用化学修饰的TiO2吸附剂进行年龄测定,Sr.
开发和验证一种方法来分离⁹⁰Zr和⁹⁰Sr-⁹⁰Y的液体来源.
通过化学分离获得的年龄测定结果与混合液晶闪光计数 (LSC) 和诱导合等离子体质谱法 (ICP-MS) 方法的结果进行比较.

主要方法:

选择性吸附离子使用化学改性TiO₂基吸附剂.
使用诱导联等离子体质谱法 (ICP-MS) 分析阴离子度.
通过同位素分离和LSC和ICP-MS测量的联合测定Sr-Y来源的年代.

主要成果:

通过TiO2吸附剂,首次证明了90Zr和90Sr从液体90Sr-90Y来源中的分离.
成功测量了⁹⁰Zr/⁹⁰Sr比,以确定液体源的年龄.
在化学分离的年龄测定结果和LSC-ICP-MS组合方法之间取得了很好的一致性,证实了交叉验证.

结论:

化学修饰的TiO2吸附剂在90Sr的选择性吸附中是有效的.
开发的化学分离方法与LSC和ICP-MS一起,为Sr-Y来源提供可靠和交叉验证的年龄确定.
结合分析技术可以提高对放射性源年龄测定结果的信心.

关键词:

(90) 斯里兰卡人 (90) 在Zrrr.年龄约定年龄约定.在ICP-MS中,使用的是ICP-MS.液体闪计数计算液体闪计数二氧化二氧化的使用情况.

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