在介电屏障放电原子化器中进行现场预缩的后列化物生成,用于通过原子吸收光谱学进行敏感的物种化分析
Matěj Plecháč1, Gilberto Silva Coelho Junior2, Milan Svoboda2
1Institute of Analytical Chemistry of the Czech Academy of Sciences, Veveří 97, 602 00, Brno, Czech Republic; Charles University, Faculty of Science, Albertov 6, 128 00, Prague, Czech Republic.
Analytica chimica acta
|December 6, 2025
概括
使用高性能液态色谱 (HPLC),化物生成 (HG) 和原子吸收光谱 (AAS) 进行物种分析的新方法为ICP-MS提供了一个自动化的替代方案. 这种技术改善了有毒物种的检测极限.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 由于不同物种的毒性不同,物种化分析至关重要.
- 现有的方法如HPLC-ICP-MS是常见的,但需要替代方法.
研究的目的:
- 开发一种新的,自动化的物种化分析方法.
- 提供使用HPLC,HG和AAS的ICP-MS的替代方案.
主要方法:
- 高性能液态色谱 (HPLC) 用于分离.
- 化物生成 (HG) 用于将物种转化为挥发性形式.
- 原子吸收光谱 (AAS) 在介电屏障放电原子化器中进行现场预缩.
主要成果:
- 由于AAS峰值较窄,提高了物种的检测极限 (LOD).
- 通过O2添加和流量中断实现的定量预度.
- 一种"混合"模式允许在单次运行中量化不同度的物种.
- 使用人类尿液和海洋组织参考材料验证的方法.
结论:
- 开发的分析程序是完全自动化的.
- 为物种化提供了与ICP-MS相比的可行替代方案.
- 在物种分析中保持相对较低的LOD.
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