托吡卡胺的平行催化氢波法测定  

Determination of Tropicamide by Parallel Catalytic Hydrogen Wave

作　　者：李宁[1] 宋俊峰[1] 徐茂田[1] 

机构地区：[1]西北大学分析科学研究所,西安710069

出　　处：《应用化学》2004年第11期1093-1096,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(29875017);陕西省自然科学基金(2002B01)资助项目

摘　　要：在005mol/LKCl11×10-2mol/LKIO3支持电解质中,托吡卡胺于-179V(vsSCE)处产生一平行催化氢波,其二阶导数峰峰电流与托吡卡胺的浓度在60×10-8～80×10-5mol/L范围内呈线性关系,检测限为3×10-8mol/L。该平行催化氢波比相应催化氢波提高分析灵敏度一个数量级。应用该方法不需要预处理,直接测定滴眼液中托吡卡胺的含量。并讨论了该平行催化氢波的产生机理。In a solution of 0 05 mol/L KCl 1 1×10 -2 mol/L KIO 3 supporting electrolyte, tropicamide was found to yield a parallel catalytic hydrogen wave with a peak potential of 1 79 V( vs .SCE). The second order derivative peak current of the wave is proportional to the tropicamide concentration in the range of 6 0× 10 -8 ～ 8 0×10 -5 mol/L with detection limit 3×10 -8 mol/L. The analytical sensitivity of the parallel catalytic hydrogen wave is one order of magnitude higher than that of the corresponding catalytic h...

关 键 词：托吡卡胺 KIO_3 催化氢波 平行催化氢波 

分 类 号：O657.1[理学—分析化学]