Visual Method for Determining Vitamin C in Real Samples
LI Jia-Xuan1, SHI Jing-Zhu1, WEN Li-Quan2, SHI Ke-Ren3, LIU Hong-Yun1**
1. College of Chemistry, Beijing Normal University, Beijing 100875, China;
2. Beijing No.2 Middle School, Beijing 100010, China;
3. State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021,China
Abstract A new type of closed bipolar electrode system was proposed for conveniently and visually determining vitamin C content in real samples. In this system, an ITO electrode with electrochromic Prussian blue films (PB/ITO) was used as the signal electrode, and the concentration of vitamin C in the samples was measured by colorimetric method. Compared the results with those obtained by titration and high performance liquid chromatography, the proposed method is more reliable, simple, practical and easy to reset, demonstrating a strong potential in applications.
LI Jia-Xuan, SHI Jing-Zhu, WEN Li-Quan, SHI Ke-Ren, LIU Hong-Yun. Visual Method for Determining Vitamin C in Real Samples[J]. Chinese Journal of Chemical Education, 2021, 42(12): 41-46.
