摘要
应用循环扫描伏安法考察槲皮素在悬汞电极上的电化学行为,并用线性扫描伏安法测定其含量。在0.1mol/LNa2CO3-NaHCO3(pH9.51)缓冲溶液中,槲皮素在-1.33V(vs.Ag/AgCl)处出现灵敏的还原峰,峰电流与其浓度在2.0×10-6～2.0×10-5mol/L(r=0.9989)范围内呈良好的线性关系。该方法可直接用于罗布麻叶中槲皮素的含量测定。
The electrochemical behavior of quercetin was investigated by cyclic voltammetry at the hanging mercury drop electrode,and linear sweep voltammetric method for determinition of quercetin was developed.In pH 9.51 Na2CO3-NaHCO3 buffer solution,the peak potential was-1.33V(vs.Ag/AgCl,the peak current was directly proportional to the quercetin concentration in the range of 2.0×10-6~2.0×10-5mol/L(r=0.9989).This method can be used for the determination of quercetin in Apocynum venetum L with satisfactory results.
出处
《分析试验室》
CAS
CSCD
北大核心
2010年第11期32-35,共4页
Chinese Journal of Analysis Laboratory
基金
教育部春晖计划(Z2005-1-65001)资助
关键词
槲皮素
悬汞电极
电化学行为
Quercetin
Hanging mercury drop electrode
Electrochemical behavior
