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本文用多种电化学方法研究了氧氟沙星与镁离子的相互作用及其极谱伏安行为，在０．０１ｍｏ１／Ｌ的ＮＨ３－ＮＨ４Ｃ１缓冲溶液中（ｐＨ＝９．２），氧氟沙星与镁离子络合，产生一灵敏的还原峰，峰电位ＥＰ＝－１．７０Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ）．该峰为不可逆的络合吸附峰，还原峰电流与镁离子浓度在４×１０－６～２×１０－５ｍｏｌ／Ｌ范围内呈良好的线性关系，可望用于镁离子的分析测定．本文还测定了该络合物的络合比，探讨了电极反应机理与络合物结构．
In this paper, the interaction between ofloxacin and magnesium ions and its polarographic voltammetric behavior were studied by a variety of electrochemical methods. In 0.01mo1 / L NH3-NH4C1 buffer solution (pH = 9.2) Shaxingu complexed with magnesium ions, resulting in a sensitive reduction peak, peak potential EP = -1.70V (vs.Ag/AgCl). The peak is an irreversible complex adsorption peak. The reduction peak current has a good linear relationship with the concentration of magnesium ion in the range of 4 × 10-6 ~ 2 × 10-5mol / L, which is expected to be used in the determination of magnesium ion. In this paper, the complex ratio of the complex was also measured, and the electrode reaction mechanism and complex structure were discussed.