Simultaneous Infrared Spectroscopy, Raman Spectroscopy, and Luminescence Sensing: A Multispectroscopic Analytical Platform,ACS Measurement Science Au

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Simultaneous Infrared Spectroscopy, Raman Spectroscopy, and Luminescence Sensing: A Multispectroscopic Analytical Platform
ACS Measurement Science Au ( IF 4.6 ) Pub Date : 2021-12-27 , DOI: 10.1021/acsmeasuresciau.1c00048
Sarah Klingler ₁ , Julian Hniopek _{2,

3} , Robert Stach ₄ , Michael Schmitt ₃ , Jürgen Popp _{2,

3} , Boris Mizaikoff _{1,

4}

Affiliation

Scientific questions in fields such as catalysis, monitoring of biological processes, or environmental chemistry demand analytical technologies combining orthogonal spectroscopies. Combined spectroscopic concepts facilitate in situ online monitoring of dynamic processes providing a better understanding of the involved reaction pathways. In the present study, a low-liquid-volume multispectroscopic platform was developed based on infrared attenuated total reflection (IR-ATR) spectroscopy combined with Raman spectroscopy and luminescence sensing. To demonstrate the measurement capabilities, exemplary analyte systems including water/heavy water and aqueous solutions of ammonium sulfate were analyzed as proof-of-principle studies. It was successfully demonstrated that three optical techniques may be integrated into a single analytical platform without interference providing synchronized and complementary data sets by probing the same minute sample volume. In addition, the developed assembly provides a gastight lid sealing the headspace above the probed liquid for monitoring the concentration of molecular oxygen also in the gas phase via luminescence quenching. Hence, the entire assembly may be operated at inert conditions, as required, for example, during the analysis of photocatalytic processes.

中文翻译：

同时红外光谱、拉曼光谱和发光传感：多光谱分析平台

催化、生物过程监测或环境化学等领域的科学问题需要结合正交光谱学的分析技术。组合光谱概念有助于原位动态过程的在线监测可以更好地了解所涉及的反应途径。在本研究中，开发了一种基于红外衰减全反射 (IR-ATR) 光谱结合拉曼光谱和发光传感的低液体体积多光谱平台。为了证明测量能力，包括水/重水和硫酸铵水溶液在内的示例性分析物系统作为原理验证研究进行了分析。成功地证明了三种光学技术可以集成到一个分析平台中而不会受到干扰，通过探测相同的分钟样本量提供同步和互补的数据集。此外，开发的组件提供了一个气密盖，密封探测液体上方的顶部空间，用于通过发光淬灭监测气相中分子氧的浓度。因此，整个组件可以根据需要在惰性条件下运行，例如，在光催化过程的分析过程中。

更新日期：2021-12-27

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