化妆品和食品中曲酸的高效液相色谱——电化学安培检测方法  

Determination of the kojic acid in food or cosmetic with the HPLC-electrochemistry detector

作　　者：钱疆[1] 王凯云 杨方 

机构地区：[1]福州大学,福建福州350002 [2]福建检验检疫局,福建福州350001

出　　处：《福建分析测试》2005年第3期2212-2214,共3页Fujian Analysis & Testing

摘　　要：本文提出用高效液相色谱———安培检测食品或化妆品中曲酸的新方法。采用玻碳电极氧化电流1.1V检测,使用C18柱,流动相为20mMKH2PO4(pH=3)。在20μL进样下,检测限可达0.2ng,线形范围0.2ng^2μg。方法回收率为86~91%。方法具有选择性好,灵敏高的优点。In this article,a high performance liquid chromatographic (HPLC) method with the electrochemistry detector for the determination of the kojic acid in food or cosmetic product was studied.The oxidation current of l.1V is applied on the glassy carbon electrode with the column of ODS C_1_8 and the mobile phase 20mM KH_2PO_4(pH=3).The linearity ranges from 0.2ng～2μg when the 20μL sample is injected.The detection limit is 0.2ng with the recovery rate of 86～91%.This method is characterized by high specificity and sensitivity.in the complex matrix.

关 键 词：高效液相色谱 化妆品 检测方法 曲酸 食品 电化学 安培检测 玻碳电极 C18柱 流动相 检测限 回收率 进样 

分 类 号：O657.72[理学—分析化学] TQ658[理学—化学]