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研究论文

电沉积铋膜电极差示脉冲溶出伏安法测定盐酸左氧氟沙星

  • 郭子英 ,
  • 李作鹏 ,
  • 李 江 ,
  • 赵建国 ,
  • 冯 锋
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  • 山西大同大学化学与环境工程学院,山西 大同 037009

收稿日期: 2018-09-26

  修回日期: 2018-12-04

  网络出版日期: 2019-12-28

基金资助

This work was financially supported by Natural Science Foundation of Daton(No. 2019168, No. 201819), Natural Science Foundation of Shanxi Province (No. 201701D121016) and research funds of Innovation & Application Engineering Research Center for Mesoporous Materials of Shanxi Province (No. MMIA2019105).

Quantitative Detection of Levofloxacin Hydrochloride by Differential Pulse Stripping Voltammetry with Electrodeposited Bismuth Film Electrodes

  • GUO Zi-ying ,
  • LI Zuo-peng ,
  • LI Jiang ,
  • ZHAO Jian-guo ,
  • FENG Feng
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  • School of Chemistry and Enviromental Engineering, Shanxi Datong University, Datong, 037009, China

Received date: 2018-09-26

  Revised date: 2018-12-04

  Online published: 2019-12-28

摘要

盐酸左氧氟沙星分子中含有弱酸性有机胺结构,可与Zn(SCN)42-形成离子缔合物沉淀. 将沉淀分离溶解后,用差示脉冲溶出伏安法在原位形成铋膜电极上测定沉淀中锌(II)的含量,间接测定盐酸左氧氟沙星的含量,结果表明,采用铋膜电极伏安曲线峰形好、灵敏度高、峰电流值大,方法的线性回归方程为I = 1.1401c - 0.5309,相关系数R = 0.9979,线性范围为5.0 ~ 60 μg·mL-1,检出限为3.18×10-5 μg·mL-1,回收率为95% ~ 101%,相对标准偏差RSD = 2.87%.

本文引用格式

郭子英 , 李作鹏 , 李 江 , 赵建国 , 冯 锋 . 电沉积铋膜电极差示脉冲溶出伏安法测定盐酸左氧氟沙星[J]. 电化学, 2019 , 25(6) : 792 -801 . DOI: 10.13208/j.electrochem.180924

Abstract

In this study, differential pulse stripping voltammetry was developed for the quantitative detection of levofloxacin hydrochloride indirectly. Levofloxacin hydrochloride contains organic amine, which can be precipitated upon interaction with Zn(SCN)42-. By means of differential pulse stripping voltammetry, the concentration of Zn2+ can be determined using an in-situ formed bismuth film electrode, which allows determining indirectly the amount of levofloxacine hydrochloride. The linearity equation, I = 1.1401c - 0.5309 with the correlative coefficient R = 0.9979, was presented in the experiment. The results showed that this approach is very sensitive, having a limitation of detection of 3.18 × 10-5 μg·mL-1 in a linearity range of 5.0 ~ 60 μg·mL-1.

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