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水飞蓟宾的电化学行为研究 被引量:1

Study of the electrochemical behavior of silybin
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摘要 研究了水飞蓟宾在玻碳电极(GCE)上的电化学还原行为.在pH=2.0的B-R缓冲液中,水飞蓟宾在+480 mV左右处(Vs.SCE)产生一个阴极还原峰,还原峰电流与水飞蓟宾浓度在5.2×10-8-6.0×10-6mol/L内成良好的线性关系,检测限为1.1×10-8mol/L.该方法用于利加隆实际样品的检测,回收率为102%,对电极反应机理也作了初步探讨. The electrochemical reduction of silybin at the glassy carbon electrode (GCE) has been studied. In the Britton- Robinson buffer (pH = 2.0), silybin produced a cathode reduction peak at + 480 mV (Vs. SCE ). The reduction peak current showed a well linear relationship with the concentration of silybin in the range of 5.2 × 10^-8 -6.0 × 10^-6 mol/L by differential pulse voltammetry. The detection limit is 1.1 × 10^ -8 mol/L. The proposed method has been applied to determine silybin in legalon capsule, and the recovery is 102%. The electrochemical reaction mechanism of silybin was also investigated.
出处 《福州大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第2期288-290,共3页 Journal of Fuzhou University(Natural Science Edition)
基金 福州大学科技发展基金资助项目(2004-XQ-06)
关键词 水飞蓟宾 微分脉冲伏安法 机理 silybin differential pulse voltammetry (DPV) mechanism
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参考文献6

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