开发一个减弱的总反射-紫外线-可见探头,用于在线监测暗溶液
Nikolas T C Boily1, Heather M Felmy1, Adan Schafer Medina1
1Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States.
ACS sensors
|November 22, 2024
概括
一个新的减弱总反射率 (ATR) 紫外线探测器有效测量高度缩的溶液,克服传统方法的局限性. 这种光学光谱学的进步使得在具有挑战性的化学系统 (如核燃料回收) 中进行在线监测成为可能.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 化学传感器 化学传感器
背景情况:
- 光学光谱,特别是紫外线可见 (UV-vis),对于在线过程监控至关重要.
- 高光密度 (暗溶液) 限制了传统的紫外线,需要短路径长度或反向散射.
- 核燃料回收和高度融盐系统对当前的光学传感器构成挑战.
研究的目的:
- 评估一种用于测量高度缩溶液的新型减弱总反射率 (ATR) 紫外线探针.
- 评估探测器在暗化学系统中克服紫外线传输局限性的能力.
- 为了证明探测器的模块化优化传感器规格.
主要方法:
- 开发了一种具有模块化设计的新型ATR-UV-vis探头.
- 探测器的性能使用缩的酸和酸和有机染料 (甲蓝色,酸红色1,晶紫色) 来评估.
- 测量结果与标准的1厘米传输UV-Vis Cuvette相比较,并应用多变量曲线分辨率 (MCR) 来进行物种分析.
主要成果:
- 该ATR-UV-vis探头成功测量了染色体度比1厘米传输大600倍的溶液.
- 模块化设计允许通过调整潜水ATR光纤长度来探索不同的有效"路径长度".
- 多变量曲线分辨率有效地分析了在广泛的度范围内的甲蓝的物种化.
结论:
- 新型ATR-UV-vis探头在高度吸收的解决方案中为光学传感提供了显著的进步.
- 这项技术在具有挑战性的工业和研究应用中克服了传统紫外线光谱学的局限性.
- 该探测器显示,在苛刻的环境 (包括核过程) 中进行在线监测具有很大的前景.
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