摘要
以依诺沙星与硝酸铋(配合比11)的缔合物作为电活性物质 ,研制了铋酸盐 -依诺沙星修饰碳糊电极。该电极对溶液中依诺沙星有良好的线性响应响 ,响应斜率为56.7mV/pC,线性范围达4个数量级 ,检出限为1.0×10 -5mol/L。十几种常见无机离子与一些吡啶类离子对电极基本无干扰。该电极可用直接电位法测定市售药片中依诺沙星的含量 ,RSD<0.5 % ,回收率在99.8 %～100.3 %之间。
A carbon paste electrode modified by enoxacin_Bi(Ⅲ) was prepared. The electroactive material is the complex of enoxacin and BiCl in the ratio of 1 1.The electrode exhibits good linear response for enoxacin in solution. The slope of response is 56.8 mV/pC,the range of linearity is in 4 orders of magnitude with the detection limit of 1.0×10-5mol/L. More than ten common inorganic ions and some pyridine ions have little interference on the electrode. The enoxacin tablets were determined by the electrode using direct potentiometry. The RSD is lower than 0.5% and the recovery is in the range of 99.8%～100.3%?
出处
《分析仪器》
CAS
2002年第1期16-17,共2页
Analytical Instrumentation
