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甲磺酸培氟沙星在０．１０ｍｏｌ／Ｌ的Ｎａ＿２ＨＰＯ＿４－ＫＨ＿２ＰＯ＿４缓冲液（ｐＨ６．９）中，于－１．４９Ｖ（ｖｓ．ＳＣＥ）处产生一灵敏的二阶导数还原波，极谱波的峰电位不受溶液ｐＨ值的影响，该峰对应于芳香酮的还原。实验表明反应物和其还原产物在汞电极表面均有吸附，电极过程不可逆。浓度在７．１７×１０￣（－８）～４．７６×１０￣（－６）ｍｏｌ／Ｌ之间与ｉ″。成线性关系，检测限为２．４０×１０￣（－８）ｍｏｌ／Ｌ，ＲＳＤ小于１．５％（ｎ＝８），回收率为９７．３％～１０４．３％之间。
Pefloxacin mesylate produced a sensitive second derivative reduction wave at -1.49V (vs.SCE) in 0.10mol / L Na2HPO4-KH2PO4 buffer (pH6.9). The polarographic wave The peak potential is unaffected by the pH of the solution, which corresponds to the reduction of the aromatic ketone. Experiments show that the reactants and their reduction products are adsorbed on the mercury electrode surface, the electrode process is irreversible. The linear range was 7.17 × 10 ~ (-8) ~ 4.76 × 10 ~ (-6) mol / L with a detection limit of 2.40 × 10 ~ (-8) mol / L, the RSD was less than 1.5% (n = 8) and the recovery was between 97.3% and 104.3%.