| 碳糊电极阴极吸附伏安法测定橙皮甙 |
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| 引用本文： | 易兰花,陈效兰,田俐,费俊杰,黎拒难.碳糊电极阴极吸附伏安法测定橙皮甙[J].化学研究,2007,18(4):76-78. |
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| 作者姓名： | 易兰花 陈效兰 田俐 费俊杰 黎拒难 |
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| 作者单位： | 1. 湘潭大学化学学院,湖南,湘潭,411105
2. 湖南科技大学化学化工学院,湖南,湘潭,411201 |
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| 基金项目： | 中科院长春应化所电分析化学国家重点实验室基金(SKLEAC200510)，湖南省教育厅青年项目(05B004) |
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| 摘 要： | 在0.4mol/L的NH4Cl-NH3(pH9.0)缓冲液中,使用JP-303极谱分析仪,橙皮甙在碳糊电极(CPE)上有一灵敏的吸附伏安还原峰,峰电位为-1.2V(vs.SCE).该还原峰的二阶导数峰电流与橙皮甙的浓度在2.0×10-8～1.0×10-6mol/L(富集90s)范围内成良好的线性关系,相关系数为0.9963,检出限为1.0×10-8mol/L(S/N=3,富集110s).探讨了橙皮甙在碳糊电极上的伏安性质和电极反应机理,并且成功应用于中草药桔皮中橙皮甙含量的测定.
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| 关 键 词： | 橙皮甙 阴极吸附伏安法 碳糊电极 |
| 文章编号： | 1008-1011（2007）04-0076-03 |
| 收稿时间： | 2007-07-18 |
| 修稿时间： | 2007年7月18日 |
Cathodic Adsorptive Voltammetric Determination of Hesperidin with Carbon Paste Electrode |
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| YI Lan-hua,CHEN Xiao-lan,TIAN Li,FEI Jun-jie,LI Ju-nan.Cathodic Adsorptive Voltammetric Determination of Hesperidin with Carbon Paste Electrode[J].Chemical Research,2007,18(4):76-78. |
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| Authors: | YI Lan-hua CHEN Xiao-lan TIAN Li FEI Jun-jie LI Ju-nan |
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| Abstract: | A highly selective and rapid cathodic adsorptive voltammetric method was developed for the determination of trace amount of hesperidin at a carbon paste electrode (CPE). The hesperidin was adsorbed on the surface of the CPE in 0.4 mol/L NH4Cl-NH3 buffer solution (pH 9.0) yielding one reduction peak at 1.2 V (vs.SCE). The relationship between the peak current and hesperidin concentration is linear in the range of 2.0×10-8～1.0×10-6 mol/L with a correlation coefficient of 0.996 3. The detection limit is 1.0×10-8 mol/L (S/N=3) for 110 s accummulation. The electrode reaction mechanism of hesperidin was investigated. The proposed method was applied to determine trace hesperidin in medicinal plant orange peel with satisfied results. |
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| Keywords: | hesperidin cathodic adsorption voltammetry carbon paste electrode |
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