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| olecularly Imprinted Polymer Incorporated Carbon Nanotube Modified Electrode for Selective Determination of Quercetin |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:carbon nanotube molecularly imprinted polymer quercetin morin selectivity |
| Author | Institution |
| ZHU Lingyan,WANG Zonghua,CHEN Xiaoyin,ZHANG Feifei,XIA Yanzhi,LI Yanhui |
青岛大学纤维新材料与现代纺织实验室国家重点实验室培育基地 |
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| Abstract: |
| A molecularly imprinted polymer membrane modified electrode（PPy/CNT/GCEMIP） was developed via the electrochemical polymerization of pyrrole in the presence of carbon nanotube and the molecular template quercetin（Qu）.The electrochemical performance of PPy/CNT/GCEMIP was studied by electrochemical impedance spectroscopy（EIS）.The electrochemical behaviors of Qu were investigated with cyclic voltammetry（CV） and differential pulse voltammetry（DPV） at the PPy/CNT/GCEMIP.The results showed that a sensitive oxidation peak was observed at 0184 V in pH 70 PBS and the peak current was improved obviously,indicating that PPy/CNT/GCEMIP exhibited good electrocatalytic activity and enrichment towards Qu.Meanwhile,the PPy/CNT/GCEMIP displayed a high selectivity in voltammetric measurements of Qu in the presence of morin with an anodic peak separation value of 263 mV by DPV.Under the optimal conditions,the oxidation peak current of Qu at the modified electrode was linear with the concentration over the range of 10 × 10-7-10 × 10-3 mol/L with a detection limit of 55 × 10-8 mol/L.The relative standard deviation（RSD,n=5） for 10 × 10-4 mol/L Qu was 02% .With good stability,high selectivity,and wide linear range for the determination of Qu,PPy/CNT/GCEMIP could be applied in the determination of tablets containing Qu. |
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