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| Electrochemical Behaviors and Determination of Quercetin at Poly (L-Lysine) Modified Electrode |
| Received:October 29, 2015 Revised:December 09, 2015 |
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| DOI：doi:10.3969/j.issn.2095-1035.2016.01.020 |
| KeyWord:L-Lysine; modified electrodes; quercetin; electric catalytic |
| Author | Institution |
| YANG Yin |
宿州学院 化学化工学院，安徽 宿州 |
| ZHANG Na |
宿州学院 化学化工学院，安徽 宿州 |
| WANG Li |
宿州学院 化学化工学院，安徽 宿州 |
| ZHANG Keying |
宿州学院 化学化工学院，安徽 宿州 |
| HAO Lingling |
宿州学院 化学化工学院，安徽 宿州 |
| LIU Chen |
宿州学院 体育学院 安徽宿州 |
| YANG Liuqing |
宿州学院 体育学院 安徽宿州 |
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| Abstract: |
| A poly (L-Lysine) modified electrode was prepared by electro-polymerization technology. The electrochemical behavior on pH and scan rate was investigated by cyclic voltammetry (CV). The contents of quercetin were determined using differential pulse voltammetry (DPV). The results indicated that the modified electrode showed a good electric catalytic ability for quercetin in phosphate buffer solution with pH=6.0. Linear relationship between the oxidation peak current and the concentrations of quercetin was obtained in the range of 6.21×10-5~6.9 ×10-5 mol/L. The linear equation was I (10-6A) =1.034 8-0.099 39 c(10-4 mol/L) with correlation coefficient (R) of-0.98787. The detection limit (S/N=3) was 2.07×10-5 mol/L. The method has fast analytical speed, good accuracy, high reproducibility and stability. |
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