Determination of taurine in Lycium Barbarum L. and other foods by capillary electrophoresis with electrochemical detection

被引：25

作者：

Cao, YH ^{[1
]}

Zhang, X ^{[1
]}

Chu, QC ^{[1
]}

Fang, YZ ^{[1
]}

Ye, JN ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China

来源：

ELECTROANALYSIS | 2003年 / 15卷 / 10期

关键词：

taurine; Lycium Barbarum L; capillary electrophoresis;

D O I：

10.1002/elan.200390112

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method based on capillary electrophoresis (CE) with electrochemical detection (ED) was developed for the determination of taurine in Lycium Barbarum L., LIPOVIYAN beverage and milk powder. The effects of some important factors such as the acidity of the running buffer, separation voltage, injection time, and applied potential to working electrode were investigated. Operated in a wall-jet configuration, a 300 pm diameter carbon-disk electrode was used as the working electrode, which exhibits good responses at +1.05 V (vs. SCE) for taurine. Excellent linearity was obtained in the concentration range from 5.0x10(-4) mol/L to 5.0x10(-6) mol/L. The detection limit (S/N=3) was 1.0x10(-7) mol/L. This proposed method has been successfully applied to analyze the actual samples with satisfactory assay results.

引用

页码：898 / 902

页数：5

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