1.广西柳州螺蛳粉工程技术研究中心 广西糖资源绿色加工重点实验室 广西科技大学 生物与化学工程学院, 广西 柳州 545006
2.柳州市食品药品检验所,广西 柳州 545006
3.蔗糖产业省部共建协同创新中心,广西 南宁 530004
刘永逸,副主任药师,研究方向:食品和药品分析检测,E-mail:1447667562@qq.com
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程昊,樊静静,刘永逸.硬模板法制备氮掺杂有序介孔碳修饰电极检测盐酸奈福泮[J].分析测试学报,2021,40(07):1049-1054.
CHENG Hao,FAN Jing-jing,LIU Yong-yi.Preparation of N-doped Ordered Mesoporous Carbon Modified Electrode by Hard Template Method for Detection of Nefopam Hydrochloride[J].Journal of Instrumental Analysis,2021,40(07):1049-1054.
程昊,樊静静,刘永逸.硬模板法制备氮掺杂有序介孔碳修饰电极检测盐酸奈福泮[J].分析测试学报,2021,40(07):1049-1054. DOI: 10.3969/j.issn.1004-4957.2021.07.011.
CHENG Hao,FAN Jing-jing,LIU Yong-yi.Preparation of N-doped Ordered Mesoporous Carbon Modified Electrode by Hard Template Method for Detection of Nefopam Hydrochloride[J].Journal of Instrumental Analysis,2021,40(07):1049-1054. DOI: 10.3969/j.issn.1004-4957.2021.07.011.
分别以三聚氰胺、尿素和乙二胺为氮源,阿拉伯糖为碳源,介孔硅(SBA-15)为模板剂,通过硬模板法成功制备了不同氮掺杂的介孔碳(N-CMK-3)。采用场发射扫描电镜(SEM)、透射电子显微镜(TEM)、全自动比表面及孔隙度分析仪(BET)、X射线衍射(XRD)、X射线光电子能谱(XPS)对不同材料进行表征。将N-CMK-3滴涂至玻碳电极表面构建电化学传感器,采用循环伏安法(CV)对N-CMK-3修饰电极的电化学行为进行考察。考察了修饰剂的用量和pH值对盐酸奈福泮电化学行为的影响。结果表明,在修饰剂量为6 µL和pH 4.5的最佳实验条件下,盐酸奈福泮的氧化峰电流值与其浓度在1.0 × 10,-8,~5.0 × 10,-6, mol/L范围内呈良好的线性关系,,r,2, = 0.992,检出限(,S,/,N, = 3)为5.3 × 10,-9, mol/L。此方法可用于盐酸奈福泮片的测定,加标回收率为95.9%~100%。
Different N-doped mesoporous carbons(N-CMK-3) were prepared by hard template method, using melamine, urea and ethylenediamine as nitrogen source, arabinose as carbon source and mesoporous silicon (SBA-15) as template agent. The samples were characterized by scanning electron microscopy(SEM), transmission electron microscopy(TEM), brunner emmet teller(BET), X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The N-CMK-3 were coated onto glassy carbon electrodes to construct electrochemical sensors. The electrochemical characteristics of N-CMK-3 modified electrodes were investigated by cyclic voltammetry. Effects of amount of modifier and pH value on the electrochemical behavior of nefopam hydrochloride were investigated. The results showed that, under the optimal experimental conditions of 6 µL modified dose and pH 4.5, nefopam hydrochloride had a good linear relationship(,r,2, = 0.992) between peak current and its concentration within 1.0 × 10,-8,-5.0 × 10,-6, mol/L. The limit of detection(LOD, ,S,/,N ,= 3) was 5.3 × 10,-9, mol/L.This method was applied to the detection of nafopam hydrochloride in human nafopam hydrochloride tablets, with recoveries of 95.9%-100%.
氮掺杂介孔碳修饰电极循环伏安法盐酸奈福泮
N-doped mesoporous carbonmodified electrodecyclic voltammetrynefopam hydrochloride
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