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基于多壁碳纳米管/纳米银复合修饰剂电致化学发光传感器的制备及应用
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作者单位
罗应,李彦青,陆世昌,程昊,孔红星,李利军 1.广西科技大学鹿山学院2.广西科技大学生物与化学工程学院广西糖资源绿色加工重点实验室广西高校糖资源加工重点实验室 
基金项目:广西教育厅科研项目(KY2015YB170);广西科技大学鹿山学院科学基金项目(2015LSKY07)
中文摘要:建立了基于多壁碳纳米管(MWNT)/纳米银(nano-Ag)复合修饰剂固载联吡啶钌(Ru(bpy)2+3)传感器测定盐酸苯海索的电致化学发光分析方法。借助MWNT优良导电性及nano-Ag的电催化性能,采用溶胶-凝胶法,利用成膜剂硅溶胶(Silica sol)、聚乙烯醇(PVA)将MWNT、nano Ag、Ru(bpy)2+3固载修饰到热解石墨电极(PGE)表面,制备出MWNT/nano-Ag/Silica sol/PVA/Ru(bpy)2+3-PGE电致化学发光传感器,并依据盐酸苯海索对联吡啶钌的增敏作用,快速、准确测定了盐酸苯海索。结果表明:盐酸苯海索在4.36×10-7~1.09×10-4 mol·L-1浓度范围内与其发光强度线性关系良好,线性方程为IECL=146.98×105c+502.03(r2=0.997 3),检出限(S/N=3)为2.06×10-8 mol·L-1;对5份不同加标浓度的盐酸苯海索的回收率为97.7%~104%,相对标准偏差(RSD)为2.4%。该方法对检测盐酸苯海索药品具有良好的灵敏度与稳定性,效果满意。
中文关键词:多壁碳纳米管  纳米银  热解石墨电极  电致化学发光  盐酸苯海索
 
Preparation and Application of an Electrochemiluminescence Sensor Based on Multi walled Carbon Nanotube/Nano Ag
Abstract:An electrochemiluminescence sensor was fabricated for the determination of benzhexol hydrochloride based on a pyrolytic graphite electrode modified with multi walled carbon nanotube(MWNT)/nano Ag/Silica sol/professional video assistant(PVA)/Ru(bpy)2+3.In light of the perfect conductivity of MWNT and the electrocatalysis of nano-Ag,silicon sol and polyvinyl alcohol were used as film forming agents to fix MWNT,nano-Ag and Ru(bpy)2+3 on the pyrolytic graphite electrode(PGE) by sol gel method,and benzhexol hydrochloride was detected on the MWNT/nano-Ag/Silica sol/PVA/Ru(bpy)2+3-PGE by electrogenerated chemiluminescence(ECL) according to the sensitization of benzhexol hydrochloride to Ru(bpy)2+3.Results indicated that there was a good linear relationship for the ECL intensity of benzhexol hydrochloride in the range of 4.36×10-7-1.09×10-4 mol·L-1 with a correlation coefficient(r2) of 0.997 3 and a linear equation of IECL=146.98×105 c+502.03The limits of detection were 2.06×10-8 mol/L(S/N=3).The recoveries for benzhexol hydrochloride at five spiked levels were in the range of 97.7%-104% with the RSDs of 2.4%.The method was applied in the detection of benzhexol hydrochloride drugs with good sensitivity and stability.
Key Words:MWNT  nano-Ag  pyrolytic graphite electrode  electrogenerated chemiluminescence  benzhexol hydrochloride
引用本文:罗应,李彦青,陆世昌,程昊,孔红星,李利军.基于多壁碳纳米管/纳米银复合修饰剂电致化学发光传感器的制备及应用[J].分析测试学报,2019,38(1):112-116.
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