Raman spectrometer with vertical flow method for solutions containing organic solvents

Ting Hao Chen, Yu Sheng Chen, Hirotsugu Hiramatsu*

*此作品的通信作者

研究成果: Article同行評審

摘要

The vertical flow (VF) method improves generation and collection efficiency in Raman spectroscopy. It enhances all Raman signals, including undesired signals of organic solvents having a considerably large Raman cross section. We constructed a Raman spectrometer using the VF method to overcome this drawback and introduced a spatial line rejection mask to eliminate unnecessary bands. In addition, the design of the VF unit was improved to resist organic solvents. A VF unit with a 60-µm pinhole enhanced the signal 168 times. The spatial mask effectively eliminated the large Raman bands of the solvent and enabled a longer exposure time. The increase in the dynamic range improved the signal-to-noise ratio by 10 % in methanol and acetonitrile measurements. Raman spectrometer with the VF method and spatial mask enables us to record the Raman spectrum of solute molecules without the disturbance of solvent bands.

原文English
文章編號124679
期刊Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
320
DOIs
出版狀態Published - 5 11月 2024

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