基于色谱和提取树脂的-226分离方法的比较,用于在饮用水中通过ICP-MS进行其测定
Marine Roulier1, Pascale Anabelle Baya2, Steeve Roberge2
1Laboratoire de radioécologie, Département de Chimie, Université Laval, Québec Cité, Québec, Canada.
Journal of mass spectrometry : JMS
|February 4, 2024
概括
本研究严格比较了使用ICP-MS在饮用水中分离-226 (226Ra) 的五种方法.所有方法都实现了高回收率,为环境监测提供了可比性能.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 放射化学 放射化学是指辐射化学.
背景情况:
- 人类活动将-226 (226Ra) 释放到环境中,由于潜在的健康风险,需要进行监测.
- 诱导合等离子体质谱法 (ICP-MS) 是用于226Ra定量化对α谱法的一种可行的替代方案.
- 缺乏严格的性能比较,阻碍了对226Ra分析的客观方法选择.
研究的目的:
- 在ICP-MS分析之前,对饮用水中226Ra分离和预度进行五种已发表的方法进行比较.
- 评估基于回报时间,废物产生和可持续环境监测成本的方法.
- 为明智选择最合适的226Ra分离方法提供数据.
主要方法:
- 评估了已发表的5种用于226Ra分离和预度的方法.
- 染色和提取树脂用于样品制备.
- 分析使用诱导合血质谱法 (ICP-MS) 进行.
主要成果:
- 所有五种方法都成功地分离和预先缩了226Ra,回收率在84%到105%之间.
- 实现的方法检测和量化极限分别为2-7 fg L-1和6-24 fg L-1.
- 交货时间从6小时到21小时不等,成本从40美元到132美元不等.
结论:
- 用ICP-MS测定饮用水中的226Ra的方法表现出类似的优点.
- 该研究为选择基于性能,效率和成本的最佳226Ra分离方法提供了关键的见解.
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