流动注射-化学发光法测定没食子酸含量  

Determination of Gallic Acid by Flow Injection-Chemiluminescence

作　　者：李青轻 蒲婷 陈复彬[1] 陈磊 张贵 杨春艳[1] Li Qingqing;Pu Ting;Chen Fubin;Chen Lei;Zhang Gui;Yang Chunyan(College of Chemistry and Chemical Engineering,China West Normal University,Nanchong 637002,China)

机构地区：[1]西华师范大学化学化工学院,四川南充637002

出　　处：《山东化工》2021年第7期106-107,116,共3页Shandong Chemical Industry

基　　金：四川省化学合成与污染控制重点实验室开放项目(11CSPC-(1-7));四川省教育厅重点项目(15ZA0153);西华师范大学英才科研基金项目(17YC036)。

摘　　要：基于没食子酸对Luminol-NaIO 4发光体系强烈的增敏作用,建立了一种测定没食子酸的流动注射-化学发光新方法。在最佳实验条件下,相对化学发光强度(ΔI)与没食子酸在1.0×10^(-7)~1.0×10^(-6)mol/L范围内具有良好的线性关系,检出限(LOD)低至3.1×10^(-8)mol/L(3σ)。对5.0×10^(-7)mol/L的没食子酸溶液连续测定7次,其相对标准偏差(RSD)为2.5%。本方法仪器设备简单、操作方便、分析速度快,已成功用于红酒中没食子酸的测定,结果令人满意。Based on the chemiluminescence(CL)phenomenon of luminol and NaIO 4 enhanced by gallic acid,a new and sensitive method is established for the determination of gallic acid by the flow injection-chemiluminescence system.Under experimental optimized conditions,the good line gallic acid range was found to be from 1.0×10^(-7)mol/L to 1.0×10^(-6)mol/L with a detection limit of 3.1×10^(-8)mol/L(3σ).The relative standard deviation(RSD)for the determination of 5.0×10^(-7)mol/L gallic acid solution was 2.5%(n=7).The method has been successfully applied to determine gallic acid in wine.

关 键 词：没食子酸 流动注射 化学发光 红酒 

分 类 号：O657.39[理学—分析化学]