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S&M3485 Research Paper of Special Issue https://doi.org/10.18494/SAM4644 Published: December 28, 2023 Determining Caffeine Concentration in Aqueous Solutions Using a High-precision Position-sensor-detector-based Measurement System [PDF] Yen Liang Yeh, Wei Kai Xu, and Zong Han Li (Received May 23, 2023; Accepted December 8, 2023) Keywords: caffeine, optical measurement, position sensor detector, mixture, measurement system
We investigated the effect of caffeine concentration on the refractive index of aqueous solutions using a high-precision measurement system equipped with a position sensor detector. Experimental results indicated that the caffeine concentration directly affects the deflection distance. This deflection distance serves as the basis for determining the refractive index of the mixture solution. As the caffeine concentration of the mixture solution increases, the refractive index increases. In this study, the caffeine concentration of a mixture was 4%, and the refractive index was 1.3437. Thus, the caffeine concentration of a mixture can be determined on the basis of its refractive index.
Corresponding author: Yen Liang YehThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Yen Liang Yeh, Wei Kai Xu, and Zong Han Li, Determining Caffeine Concentration in Aqueous Solutions Using a High-precision Position-sensor-detector-based Measurement System, Sens. Mater., Vol. 35, No. 12, 2023, p. 4349-4358. |