DETECTION OF Cu(II) USING ITS REACTION WITH INDIGO CARMINE AND DIFFERENTIAL PULSE VOLTAMMETRY

作者：Coulibaly Mariame; Muresan Liana Maria^*; Popescu Ionel Catalin

来源：Studia Universitatis Babes-Bolyai Chemia, 2012, 57(3): 65-72.

• Cu(II)
• indigo carmine
• differential pulse voltammetry

An electrochemical method for Cu(II) determination based on its reaction with indigo carmine (IC) in alkaline medium and differential pulse voltammetry performed at graphite electrode, was elaborated. The experimental parameters affecting the Cu(II) - IC complex formation (reaction time and pH) were optimized. The linear range of the calibration curve, obtaining by representing the IC oxidation current (E-appl = 0.175 V vs. Ag/AgCl, KClsat) as function of the Cu(II) concentration (pH 10), was from 10 mu M up to 70 mu M Cu (II) and the detection limit was 4.74 mu M.

• 出版日期2012