摘要
用聚酰胺修饰碳糊电极在ｐＨ３６０的Ｂｒｉｔｏｎ－Ｒｏｂｉｎｓｏｎ缓冲溶液中，将槲皮素开路富集一定时间后，从０４５Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ）向阴极化扫描至－０５５Ｖ获得Ｉ－Ｅ曲线。槲皮素的峰电位为０１８Ｖ。峰电流与槲皮素浓度在１０～４００μｍｏｌ／Ｌ范围内呈良好的线性关系。所拟定方法用于芦丁水解产物测定，结果满意。
The stripping voltammetric determination of quercetin with a polyamide_modified carbon paste electrode has been developed. In the Britton_Robinson buffer (pH=3 60), scanning from 0 45 V ( vs .Ag/AgCl/1 mol·L -1 KCl)to -0 55 V gave a well defined quercetin peak in the I _ E curve at 0 18 V. An excellent linear relationship between the peak current and the quercetin concentration was obtained in the range of 1 0～400 μmolL -1 . The proposed method has been satisfactorily applied to the determination of quercetin in rutin hydrolyzates.
出处
《分析测试学报》
CAS
CSCD
1998年第6期53-55,共3页
Journal of Instrumental Analysis
关键词
槲皮素
聚酰胺
修饰碳糊电极
伏安法
测定
Quercetin, Polyamide_modified carbon paste electrode, Stripping voltammetric method
