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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%.