基于离子色谱的有机电合成快速检测分析的新方法

在有机电化学合成中 ,实时准确地分析反应物、中间体和产物的组成及浓度变化十分重要 ,对特定体系研发一种快速、有效的检测方法 ,则有更加重要的应用价值 .电合成法以其原料价廉易得、反应条件温和、环境污染小等特点 ,成为生产乙醛酸等物种的重要途径和发展方向 .在草酸电合成乙醛酸过程中 ,已知电解液的主要物种是乙醛酸和草酸 ,对乙醛酸的定量检测将对电合成的过程评价和生产具有指导意义 .但由于它们较为相似的分子结构却给物种的分析与检测造成极大的麻烦 ,迄今尚未见到有关实时准确地分离检测乙醛酸的方法报道 .实际检测中人们仍不得…

A New Method Based on Ion Chromatography Technology for the Speedy Determination and Analysis in Organic Electrosynthesis

Based on ion chromatography technology, we have developed a new method that combines ion chromatography with a conductivity detector to separate and determine the substances of oxalic acid and glyoxalic acid, which are the main substances in the electrosynthesis of glyoxalic acid. The experimental results demonstrate that the detection sensitivity is ahead of 10 -6 grade, the cofficient of variation of retention time, the height of peak and the area of peak outperform 1%. All the recoveries of the detected substances are ranged between 98% and 102%. The method exhibits advantages of high selectivity, sensitivity, speediness and simple equipment. Furthermore, simultaneous determination of a mixture of several substances can be carried out by the method. We have demonstrated in the current paper that the ion chromatography is a speedy, effective, new detection method, which may be used to determine the substances existing in the electrosynthesis process of glyoxalic acid.