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Citation: SHENG Li, ZHAO Zhi-Hui, MI Ying, SU Bi-Quan, JING Wang-Li, TAO Cai-Hong. Measurement of Tracing Copper Using Catalytic Kinetic Fluorescence Method: Design and Practice of an Inquiry Experiment[J]. University Chemistry, ;2017, 32(1): 58-61. doi: 10.3866/PKU.DXHX201609031 shu

Measurement of Tracing Copper Using Catalytic Kinetic Fluorescence Method: Design and Practice of an Inquiry Experiment

School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China

Based on the catalytic effects of Cu(II) on KIO₄ oxidized safranineT, a newsystemfor determining tracing copper with catalytic kinetic fluorescencemethod is established.After adding Cu(II), the fluorescence intensity at 580 nmis significantly reduced.Within the concentration range of 2.50-32.50 ng·mL^-1, a linear relationship between the concentration of Cu(II) and lg(F₀/F) in the system is observed. Based on this new experiment, the design and implementation of instrumental analysis laboratory is investigated. Meanwhile, in order to achieve high quality of the inquiry experiment teaching, teachers should be responsible for proposition and feasibility.
- Instrumental analysis laboratory,
- Design of inquiry experiment,
- Copper,
- Catalytic kinetic fluorescence method
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