基于三辛胺缔合作用的草酸及柠檬酸电极的制备  

Preparation of Oxalic Acid and Citric Acid Electrodes Based on Their Complexes with TOA

作　　者：于海燕[1] 白钰[1] 欧阳健明[1] 

机构地区：[1]暨南大学生物矿化与结石病防治研究所,广州510630

出　　处：《分析科学学报》2006年第5期559-562,共4页Journal of Analytical Science

基　　金：广东省科技攻关项目(No.2005B30701003);国家自然科学基金(No.20471024);广州市重点科技项目(2001-Z-123-01)

摘　　要：草酸、柠檬酸可分别与三辛胺（TOA）生成稳定的缔合物，化学分析和红外光谱表明缔合比为1：1。以此缔合物为活性物质制作的PVC膜电极，测定溶液中的草酸盐、柠檬酸盐的线性范围分别为1．0×10^-4～1．0×10^-1mol·L^-1和1．0×10^-5-1．0×10^-2mol·L^-1。该电极用于简单模拟体系中草酸和柠檬酸浓度的测定，效果良好。Both oxalic acid and citric acid can form stable complexes with TOA. The complex ratios were confirmed to be 1：1 by chemical analyses and FTIR spectra. The PVC membrane electrodes based on these electroactive materials were prepared. The prepared electrodes can be used to determine the concentrations of oxalic acid and citric acid. The linear ranges were from 1.0×10^-4mol· L^-1 to 1.0×10^-1 mol·L^-1 for oxalate acid and from 1.0×10^-5 mol·L^-1 to 1.0×10^-2 mol·L^-1 for citrate. The electrodes were successfully applied to determine the concentrations of oxalic acid and citric acid in simple simulative systems.

关 键 词：电极 草酸 柠檬酸 三辛胺 红外光谱 

分 类 号：O657.32[理学—分析化学]