改进阿尔法光谱的Po源制备:氧化微沉微沉
Peter Medley1, Sian Patterson2, Nicholas Howell3
1Radiation Sciences, Queensland Health, 39 Kessels Road, Coopers Plains, Queensland, 4108, Australia; Department of Nuclear Physics and Accelerator Applications Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia.
概括
使用氧化物微沉的新方法简化了对复杂样品中的-210 (210Po) 分析的α源制备. 这种技术增强了化学分离,减少了准备时间,同时保持了高分析灵敏度.
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
- 环境科学 环境科学
背景情况:
- 阿尔法光谱测量对于活性化物分析至关重要.
- 对于复杂的矩阵来说,传统的-210 (210Po) 源制备方法可能耗时且具有挑战性.
- 氧化 (Nd(OH) 3) 微沉是一种成熟的技术,用于制备阿尔法源的活性化物.
研究的目的:
- 为-210 (210Po) 的α源制剂调整氧化微沉方法.
- 评估该方法适用于复杂的环境样本的适用性及其在化学分离中的有效性.
- 与现有方法相比,评估实现的α峰值分辨率和准备时间.
主要方法:
- 适应的微沉使用氧化 (Nd(OH) 3) 为210Poα源制剂.
- 整合了增强的化学分离步骤,以去除干扰元素,如铜 (Cu), (Pb) 和铁 (Fe).
- 使用了替代的中和剂来利用复合化学的差异来改善分离.
主要成果:
- 常规实现的阿尔法峰值分辨率小于50keV (全宽半最大).
- 与许多自动沉积方法相比,减少了α源的准备时间.
- 对于复杂的样品类型 (生物,海洋沉积物,海水,地下水) 具有均的Po分布和可比的化学回收的证明强度.
结论:
- 适应的Nd(OH) 3微沉方法非常适合210Poα源的制备,特别是复杂矩阵.
- 该方法提供了增强的化学分离,特别是对于含有高Cu的样品或同时确定210Pb的样品.
- 该技术为在各种环境样本中进行210Po分析提供了强大,灵敏和高效的方法.
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