摘要
本文提出一个使用玻碳薄汞膜电极测定氟哌酸的伏安法．在ｐＨ５．６～７的乙酸～乙酸钠缓冲溶液中，氟哌酸在－１５００ｍｖ有一个灵敏的导数阴极波，用于胶囊中氟哌酸含量的测定，结果满意．氟哌酸浓度在０．２～５００ｍｇ／Ｌ范围内与峰高呈线性，检测限为０．２ｍｇ／Ｌ，加标回收率在９７．２～１０４％间，对含量为０．１ｇ／粒的氟哌酸胶囊重复测定，ＲＳＤ（ｎ＝５）为０．６７％和１．２６％．方法简便。
Norfloxacini(FPA) has a sensitive cathodic wave in HAc NaAc(pH 5.6～7.0)buffer solution. The peak potential is -1500mv(vs. Ag/AgCl). The detection limit and the linear range of FPA are 0.20mg/L and 0.20～500mg/L. This method has been used for determination of FPA in capsulae norfloxacini with a satisfactory results. The RSD(n=5)are 0.67% and 1.26% for two samples. The recovery is 97.2% to 104.0%.
