流动注射结合化学发光法测定没食子酸  

Chemiluminescence determination of gallic acid by flow-injection analysis

作　　者：谢强[1] 汪敬武[1] 

机构地区：[1]南昌大学化学系,南昌330047

出　　处：《分析试验室》2005年第4期70-72,共3页Chinese Journal of Analysis Laboratory

摘　　要：基于没食子酸与铬 (Ⅵ )的氧化还原反应 ,产生的铬 (Ⅲ )催化鲁米诺 H2 O2 化学发光体系的研究 ,结合流动注射技术 ,优化反应条件 ,建立了一种高灵敏度的快速测定没食子酸的新方法。方法的线性范围为 2 .0× 1 0 - 9～ 5 .0× 1 0 - 6g/mL ,检出限为 1 .2× 1 0 - 9g/mL ,对 1 .0× 1 0 - 7g/mL的没食子酸进行了 1 1次平行测定 ,相对标准偏差为 2 .1 %。方法成功地用于健民咽喉片中没食子酸的测定。Based on the reduction of hexavalent chromium by gallic acid to trivalent chromium, which in turn catalyzed the chemiluminescence of luminol with hydrogen peroxide, a rapid, sensitive and new method for the determination of gallic acid was established. The linear range of 2×10^(-9)～5×10^(-6) g/mL for gallic acid was found with a detection limit of 1.2×10^(-9) g/mL. The relative standard deviation (n=11)for 1.0×10^(-7) g/mL gallic acid was 2.1%. This method was successfully applied to the determination of gallic acid in Jianming Yanhou tablets.

关 键 词：化学发光 流动注射 没食子酸 

分 类 号：O657.32[理学—分析化学]