顶空色谱法测定聚乙烯醇树脂中的三聚乙醛含量

Determination of Paraldehyde Content in Polyvinyl Alcohol Resin by Headspace Chromatography

介绍了采用顶空色谱法测定聚乙烯醇树脂中三聚乙醛含量的方法.以DMA为溶剂,将一定质量的聚乙烯醇树脂样品溶解,经顶空进样后,通过气相色谱测定其中三聚乙醛的含量.本方法精密度和准确度高,重复性好,且操作简便、快速.

This article introduces a method for determining the content of paraldehyde in polyvinyl alcohol resin by head-space chromatography.This method uses DMA as a solvent to dissolve a certain amount of polyvinyl alcohol resin sample.After headspace injection,the content of paraldehyde was determined by gas chromatography.The test proves that the meth-od has high precision and accuracy,good repeatability,and easy and fast operation.