摘要
在pH10.50的磷酸盐缓冲溶液中 ,当含有0.8mmol/L的NH4Cl,8mg/L的SLS(十二烷基磺酸钠)时 ,诺氟沙星在由69.1% (w)的石墨粉、24.5 % (w)的液体石蜡和6.4 % (w)的甘油组成的混合粘合剂碳糊电极上产生一灵敏的阴极溶出还原峰 ,峰电位为 -1.61V ;峰电流与诺氟沙星浓度在8.0×10 -9～4.0×10 -7mol/L范围内呈良好的线性关系 ,相关系数为r=0.9949 ,检出限为3.0×10-9 mol/L ;该法用于测定诺氟沙星胶囊含量 。
A mixed binder_modified carbon paste electrode containing69.1%(w)graphite powder,24.5%(w)liquid paraffin and6.4%(w)glycerol was prepared for the determination of norfloxacin.In an ortho_phosphate solution at pH10.50containing0.8mmol/L NH 4 Cl and8mg/L sodium laurylsulfonate,norfloxaccin yields a sensitive cathodic stripping voltammetric peak at-1.61V.The peak current was linear with the concentration of norfloxacin in the range of8.0×10 -9 ～4.0×10 -7 mol/L with a correlation coefficient of0.9949,the detection limit was3.0×10 -9 mol/L.This method is satisfying for the determination of norfloxacin capsules.
出处
《分析测试学报》
CAS
CSCD
北大核心
2003年第4期98-100,共3页
Journal of Instrumental Analysis
