摘要
基于离子色谱原理,成功地研发出一种适用于乙二醛电氧化过程主要物种快速检测的新技术。研究表明,该技术不仅具有设备简便,检测快速灵敏和选择性高等优势,而且还能实现同时测定多种组分的目的。检测灵敏度小于0 5mg/L,保留时间、峰高、峰面积的变异系数均小于2%;对各物种回收率的检测结果为97%～103%。离子色谱电导检测技术的成功研发为乙二醛电氧化过程物种的实时、快速检测提供了便捷的分析手段,这对电合成体系的生产指导和过程评价具有重要意义。
Based on ion chromatography theory,a new technology has been developed to separate and determine glyoxal and glyoxylic acid which are the main substances in the electrooxidation of glyoxal to glyoxylic acid.Experimental results demonstrated that this technology exhibits not only the advantages such as simple equipment,high sensitivity and high selectivity,but also the performation of determining simultaneously a mixture of several substances.The detecting sensitivity is less than 0.5 mg/L and the coefficients of variation of retention time,peak height and peak area outperform two percent.The recoveries of the detected substances are all ranged between 97% and 103%.Ion chromatography with a conductivity detector was successfully used as a convenient analytical means for the speedy and simultaneous detection in the process of glyoxal electrooxidation.This may be of importance in the guidance and evaluation for the electrosynthesis system.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2004年第12期934-937,共4页
Fine Chemicals
基金
厦门市科技攻关项目基金资助(3502Z2001)
国家自然科学基金资助(90206039)
关键词
离子色谱
电导检测
电氧化
乙二醛
乙醛酸
ion chromatography
conductivity detection
electrooxidation
glyoxal
glyoxylic acid
