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硫功能化固态材料用于选择性分离和

Connor K Holiski¹, Kelly N Kmak¹, John D Despotopulos¹

¹Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States.

Journal of chromatography. A

|August 30, 2025

概括

研究人员开发了新的基于硫的材料,以有效分离放射性同位素. 这些方法避免了复杂的化学反应,为医学应用和核研究提供了高产量.

科学领域:

核化学和放射化学是核化学和放射化学.
材料科学用于同位素分离.

背景情况:

放射性 (As) 同位素对于核医学,国家安全和环境研究至关重要.
目前用于从 (Se) 中分离As同位素的方法通常需要严格控制氧化状态或高度酸性条件.
开发高效且不那么复杂的分离技术对于推进这些同位素的应用至关重要.

研究的目的:

评估基于硫的新型固态材料的性能,用于分离放射性同位素.
评估这些材料在医疗同位素发生器中使用的可行性.
提供一种可替代的分离方法,在较低的酸度下工作,避免复杂的氧化还原化学.

主要方法:

合成和测试了三种共聚结合的硫基连接物:硫-聚烯,乙烯-,urea-.
吸收特征,包括分布系数 (D_w) 和动力学,使用 (HCl) 和 (HNO_{3) 酸溶液中的⁷⁵Se和⁷³As进行测量.}
为了评估实际适用性,进行了柱子分离行为,连接体稳定性和化研究.

主要成果:

基于硫的树脂表现出高产率 (>95%) 和高纯度的同位素回收在各种HCl度.
在HNO₃中,当树脂与离子交换色谱相结合使用时,可以实现可比的分离效率.
连接物稳定性研究表明,在相应的分离酸度下,硫出是可以忽略不计的,这支持在同位素发生器中潜在的使用.

结论:

基于硫的固态材料为放射性同位素的有效分离提供了有希望的低酸度替代品.
这些材料在回收方面表现出色,适用于医疗同位素生产中的应用.
开发的分离策略通过消除复杂的氧化状态控制的需要,简化了现有的方法.

关键词:

亚是一种.同位素发生器产生同位素.核医学是一种核医学.是一种.硫提取剂是一种硫提取剂.

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