| 紫草素的电化学伏安行为研究 |
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| 引用本文： | 轩卫华,钱宗耀,李炳奇,刘红.紫草素的电化学伏安行为研究[J].分析试验室,2010,29(2). |
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| 作者姓名： | 轩卫华 钱宗耀 李炳奇 刘红 |
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| 作者单位： | 1. 石河子大学化学化工学院,石河子,832003
2. 新疆农科院中心实验室,乌鲁木齐,830091 |
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| 基金项目： | 教育部春晖计划(Z2005-1-65001)项目资助 |
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| 摘 要： | 紫草素在0.2 mol/L HAc-NaAc缓冲溶液(pH4.3)中,产生灵敏的线性扫描极谱峰,峰电位EP=-0.186 V(vs.Ag/AgCl)。峰电流与紫草素浓度在5×10-7~1×10-5mol/L范围内呈良好的线性关系。可用于紫草中紫草素含量的测定。用线性扫描和循环伏安法测试表明,该体系属具有反应物吸附性的可逆过程体系。
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| 关 键 词： | 紫草素 伏安行为 线性扫描 |
Studies on voltammetric behavior of shikonin and its application |
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| XUAN Wei-hua,QIAN Zong-yao,LI Bing-qi,LIU Hong.Studies on voltammetric behavior of shikonin and its application[J].Chinese Journal of Analysis Laboratory,2010,29(2). |
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| Authors: | XUAN Wei-hua QIAN Zong-yao LI Bing-qi LIU Hong |
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| Institution: | 1.College of Chemistry and Chemical Engineering Shihezi University;Shihezi 832003;2.Center Laboratory of Xinjiang Academy of Agricultural Science;Urumqi 830091 |
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| Abstract: | In a solution of 0.2 mol/L HAc-NaAc (pH 4.3), a sensitive reduction peak of Shikonin was obtained by linear sweep polarography. The peak potential was at -0.186 V (vs. Ag/AgCl). The peak current was proportional to the concentration of Shikonin over the range of 5×10~(-7)～1×10~(-5) mol/L. The proposed method has been applied to the determination of the shikonin in Arnebia euchroma (Royle) Johnst. The reduction process was studied by linear sweep and cyclic voltammetry, and the results showed that it was a reversible adsorption reduction peak. Moreover, the electrochemical behavior of the reaction between Shikonin and Eu~(3+) was also studied. |
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| Keywords: | Shikonin Voltammetric behavior Linear sweep polarography Europium ions |
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