Abstract:

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.

Key words: Instrumental analysis laboratory, Design of inquiry experiment, Copper, Catalytic kinetic fluorescence method